Location: Hong Kong, Hong Kong SAR; Singapore, Singapore
Staff/Senior Java Engineer, OKX Wallet (Web3)
Who We Are
OKX Wallet is OKX's self-custody wallet, built for users worldwide to securely and conveniently store, manage, and use their on-chain assets. The wallet backend operates in a multi-chain, multi-asset, high-concurrency environment shaped by on-chain state uncertainty and strict fund-security requirements — combining the complex-systems challenges of traditional internet backends with the transaction, signing, and on-chain interaction problems unique to blockchain.
We're looking for a Senior Java Engineer with roughly 5–10 years of backend experience: someone with strong engineering fundamentals who can independently own core modules, exercise sound judgment on complex problems, and proactively coordinate across upstream and downstream teams to drive work to completion.
What You'll Do
Own core wallet backend modules.
Build and continuously improve address management, asset synchronization, transaction construction, broadcasting, on-chain confirmation, gas estimation, nonce management, and transaction-state tracking. Understand each module's role in the full wallet flow, and keep stability, performance, and maintainability front of mind. For complex requirements, break the problem down before choosing an implementation rather than stacking code or reusing old designs.
Build transaction and on-chain interaction scenarios.
Work on transfers, token approvals, contract interactions, cross-chain, swaps, DApp connections, and signature-request handling. Understand a transaction's full lifecycle — from initiation through construction, signing, broadcasting, on-chain confirmation, and final state update — and diagnose issues like stuck transactions, duplicate submissions, state inconsistencies, and on-chain success that isn't reflected in the business system, using logs, on-chain data, and call traces.
Support multi-chain and new-chain integration.
We already support EVM, Tron, and Solana, and continuously onboard new public chains, Layer 2 networks, and asset standards. Contribute to technical research, integration design, and feature development, accounting for differences in address models, account systems, transaction structures, signing methods, fees, and confirmation mechanisms — as well as node stability, asset sync, exception compensation, monitoring, and security boundaries.
Ensure stable operation.
Contribute to day-to-day stability work — monitoring, alerting, rate limiting, graceful degradation, retries, compensation, data reconciliation, and troubleshooting. When incidents occur, help investigate, narrow scope, and fix root causes; for recurring issues, drive systemic fixes such as added monitoring, stronger fallbacks, or design improvements.
Drive your projects to delivery.
Take ownership of the modules and projects you're responsible for. On work spanning product, QA, frontend, infrastructure, or other backend teams, proactively sync information, surface dependencies and risks, and drive issues to resolution. When requirements are unclear or opinions diverge, lay out the context, offer your own judgment, and help build consensus.
Continuously raise engineering quality.
Participate in design discussions, code reviews, and system optimization. Spot unreasonable designs, duplicated logic, and latent risks, and propose actionable improvements. Document technical decisions, post-incident learnings, and best practices, and help less-experienced teammates.
Apply AI in daily development.
Use AI coding tools (Claude Code, Cursor, Codex, etc.) to assist with code comprehension, scaffolding, unit tests, code review, troubleshooting, refactoring, and documentation — validating AI output for correctness, project conventions, performance, and security rather than using it unchecked.
What We're Looking For
Solid Java backend fundamentals.
~5–10 years of Java backend experience with a strong grasp of collections, concurrency, thread pools, the JVM, network communication, and common performance issues. Proficient with Spring Boot, Spring Cloud, MyBatis, or comparable stacks, able to independently design and build medium-to-large backend modules and reason about the mechanics behind the frameworks you use.
Strong system design ability.
Experience with complex or high-concurrency systems; comfortable with idempotency, retries, compensation, caching, message queues, distributed locks, data consistency, rate limiting, and service degradation. Able to own module- or service-level design and clearly explain the core flow, failure scenarios, and key trade-offs.
Cognitive ability and judgment.
Able to understand context and goals on ambiguous problems, separate symptom from root cause, and choose a fitting solution based on business value, user experience, stability, cost, and security — rather than reflexively adding complexity.
Drive and ownership.
Able to independently own a module or project end to end, from design through development, testing, and launch. Proactively communicates and resolves dependencies, risks, and blockers, and follows through on launch outcomes rather than stopping at code merge.
Blockchain or wallet experience.
Experience with wallets, blockchain, trading platforms, on-chain data services, or related systems. Understands addresses, public/private keys, mnemonics, transaction signing, broadcasting, on-chain confirmation, gas, and nonce; familiar with the transaction mechanics of at least one of EVM, Tron, or Solana, and with token standards such as ERC-20 and TRC-20. (Strong backend fundamentals and fast learning can offset gaps in blockchain coverage.)
High security awareness.
Sensitive to private-key, signing, permission, and user-asset security; familiar with replay protection, API authentication, tamper resistance, sensitive-data protection, and least-privilege principles. Actively considers malformed input, duplicate requests, privilege bypass, and data-leak risks when building transaction features.
Independent production troubleshooting.
Able to diagnose live issues via log analysis, metrics monitoring, distributed tracing, and thread/memory analysis; can form hypotheses and narrow scope even with incomplete information. Hands-on experience with performance degradation, timeouts, message backlogs, data inconsistencies, memory issues, or unstable third-party services.
Engineering in the AI era.
Willing to use AI coding tools to improve daily efficiency and able to judge whether AI output meets real business requirements before shipping it. Has a basic understanding of prompts, context management, RAG, AI agents, and MCP, or a genuine willingness to keep learning — treating AI as an engineering tool, not requiring an algorithm/model-training background.
Nice to Have
Integration work on new public chains, new asset standards, or cross-chain protocols
Familiarity with WalletConnect, DApp Browser, or signature-request handling
Knowledge of MPC, multisig, hardware wallets, or TEE-based key-security schemes
Experience with Swap, staking, cross-chain bridges, or DeFi aggregation
Address risk detection, allow/deny lists, anti-fraud, or wallet risk-control experience
High-concurrency transaction systems, blockchain node services, on-chain data indexing, or transaction-state-tracking systems
Familiarity with RPC calls, block scanning, chain reorgs, transaction compensation, and reconciliation mechanisms
JVM performance tuning, stability governance, or complex production-incident experience
Cross-team collaboration with a track record of driving projects to delivery
Real projects built with AI — e.g. AI code review, development agents, MCP servers, intelligent troubleshooting, or knowledge bases
Follows developments in AI coding assistants and LLM applications and shares practical takeaways with the team
Perks & Benefits
Competitive total compensation
Comprehensive insurance coverage for you and your dependents
More benefits to be discussed after you join
Notice:
All official
OKX
vacancies are published on this website.
While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated.
If in doubt, please apply directly through our official careers website.
Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to
OKX
's
Candidate Privacy Notice
.
seniorHong Kong, Hong Kong SAR; Singapore, Singapore
Location: Mumbai
Workplace: hybrid
Purpose of the Job:
To provide high-quality professional counselling, "in-the-moment" support, and intake services.
Serves as the central point for clinical triage and scheduling for Lyra service users.
Core Responsibilities:
Helpline & Crisis Management
Serve as the primary first point of contact for employees and their dependents accessing the Lyra helpline via telephone, live chat, or email.
Provide immediate "in-the-moment" clinical support to callers in distress, utilizing psychological first aid and stabilization techniques.
Conduct comprehensive clinical risk assessments for every contact to identify potential self-harm, ideation, or risk to others, adhering strictly to Lyra’s risk protocols.
Manage emergency interventions and coordinate with local emergency services or internal senior clinical leads when high-risk situations are identified.
2. Clinical Intake & Triage
Conduct detailed clinical intake interviews to assess the user’s presenting concerns, history, and level of psychological distress.
Evaluate the appropriateness of short-term counseling versus higher-acuity care pathways based on the clinical assessment.
Utilize internal decision-making frameworks to assign clients to the most suitable professional within the in-house team or partner network, matching based on specialty and language preference.
Accurately evaluate clinical needs to evaluate whether care should be provided within a structured, short-term framework.
3. Delivery of Clinical Sessions
Provide high-quality, professional counseling and psychotherapy sessions to clients within a structured, short-term framework.
Utilize evidence-based interventions (such as CBT or solution-focused therapy) to address client queries and specific mental health concerns.
Ensure all clinical sessions are workplace-focused when appropriate, helping the service user improve their level of functioning and productivity.
Maintain accurate, contemporaneous clinical notes for every session, meeting the legal and professional standards of the Indian healthcare landscape.
Monitor client progress through regular outcome measurement and adjust treatment plans or escalate to the Senior CCM for complex review as necessary.
4. Advanced Scheduling & Appointment Coordination
Systematically manage the daily clinical roster, ensuring optimal coverage across all shifts to meet real-time helpline demand.
Coordinate and maintain the master calendar for all in-house counseling and coaching appointments, minimizing gaps and preventing double bookings.
Act as the primary coordinator for booking, rescheduling, and managing cancellations, ensuring both service users and clinicians are updated in real-time.
Monitor clinician availability and specialized skill sets to ensure clients are scheduled with the most appropriate professional.
5. Precision Data Capture & Database Stewardship
Accurately capture and input all vital clinical information—including demographics, presenting concerns, and risk status—into the database at the point of entry.
Ensure all data points required for case management (such as CORE-10 scores, session counts, and work impact metrics) are logged with high precision.
Maintain database integrity by ensuring all case statuses and appointment outcomes are updated immediately following service delivery.
Handle all sensitive clinical data with the highest level of confidentiality, adhering to global data protection standards and local regulations.
6. Operational Liaison & Cross-Functional Coordination
Serve as the central point of contact to coordinate daily activities between clinical and operations teams to facilitate a seamless user experience.
Manage the transition of cases between teams, ensuring all clinical and operational context is successfully communicated to the receiving professional.
Act as a liaison to resolve logistical or operational bottlenecks between departments to ensure administrative hurdles do not impact care.
Regularly communicate operational updates and capacity shifts to leadership to ensure the strategic vision is executed daily.
7. Miscellaneous & Continuous Improvement
Upholding Lyra Values: Act as a brand ambassador by consistently demonstrating Lyra’s core values of clinical excellence, innovation, and empathy.
Task Ownership: Ensure all allotted clinical and administrative tasks are performed with high precision and within agreed-upon Service Level Agreements (SLAs).
Process Optimization: Proactively identify gaps in current workflows and take the initiative to propose solutions that enhance operational efficiency.
Workshops & Content: Participate in opportunities to deliver onsite or online workshops and contribute to the development of clinical content and training manuals.
Event Participation: Represent Lyra Health at professional events and webinars to promote the transformative care model and clinical research.
Requirements and Qualifications:
• Qualification -
Masters in Clinical or Counseling Psychology.
RCI registration is desirable
0-4 years of experience (Fresh graduates are encouraged to apply).
Must be bilingual in Hindi and English.
• Experience:
0-4 years of progressive working experience in a clinical setting, with significant exposure to complex case management.
Strong preference for candidates with a background and extensive working experience in the Employee Assistance Program (EAP) or workplace mental health field, particularly with complex return-to-work or work-impact cases.
Experience working internationally and navigating diverse healthcare systems and cultural nuances is highly preferred.
Proficiency in Google Suite and CRM systems is preferred.
Working Hours and Flexibility:
Working Hours: 42.5 hours per week.
Schedule: 5 or 6 days a week; various shifts applicable to ensure helpline coverage.
Hybrid Work: Hybrid working can be considered as per the need of the job.
About You:
Clinical Acumen: Advanced ability to identify and assess high-level clinical risk during "in-the-moment" helpline contacts.
Problem Solver: Capable of navigating intricate triage challenges and client queries independently.
Autonomous & Accountable: Able to work shifts independently while ensuring sound clinical decisions and appropriate escalation.
Detail-Oriented: Meticulous accuracy in data capture and maintaining contemporaneous clinical notes.
Communicator: Ability to articulate complex clinical concepts clearly to distressed callers professionally.
Proactive & Adaptive: Adaptable to a fast-paced helpline environment with a focus on refining intake workflows.
Organized: Ability to manage a high volume of intake contacts and maintain a complex roster effectively.
Collaborative: Collaborates with senior clinical leads to manage emergency interventions and referral handovers.
• Job Families for Job Profiles
• Worker Sub-Type
Regular
• Time Type
Full time
• Primary Location
India
• Scheduled Weekly Hours
42.5
Location: Canada
Workplace: remote
We’re seeking an experienced Quality Reviewer to audit work completed by raters evaluating a personalization feature within a maps/search experience.
As a Reviewer, you will ensure outputs meet formatting and guideline requirements, are logically aligned to scenarios, and include complete, accurate evidence.
Contract type: Freelance
Language: French (Canada)
Estimated volume:Approximately 30 hours per week, depending on the required review target and project volume.
Start date: ASAP
What you will do:
Review rater worksheets for compliance with formatting requirements.
Verify that responses are logically correct and aligned with the assigned scenarios.
Assess ratings and rationales for accuracy, consistency, and completeness.
Confirm that required screenshots, retrievals, and personalization evidence meet project guidelines.
Provide clear, concise, and actionable feedback; request corrections where needed.
Flag ambiguous cases, systemic issues, or guideline gaps to the project team.
Requirements:
To be located and have the right to work in Canada.
An existing, actively used
Gmail account
.
Proven experience in Quality Audit/QA review (content evaluation, relevance, or similar).
Familiarity with maps/local search user experiences and personalization concepts.
Strong proficiency with spreadsheets (Google Sheets or equivalent).
Excellent attention to detail and consistent application of guidelines.
Clear written communication and a constructive feedback style.
Please note:
This project requires opt-in, consent-based access to limited elements of your activity history. A consent form will be provided for you to review and sign before participation. Please note that the consent form and its terms may be subject to change as project requirements evolve.
A desktop or laptop computer is required to complete the application and onboarding process. Mobile devices are not supported.
УдалённоCanada
Не хотите искать каждый день?
Настройте подбор один раз, и подходящие вакансии будут сами приходить в Telegram.
Настройте подбор, и подходящие вакансии будут приходить в Telegram.
Location: Japan
Workplace: remote
We’re seeking an experienced Quality Reviewer to audit work completed by raters evaluating a personalization feature within a maps/search experience.
As a Reviewer, you will ensure outputs meet formatting and guideline requirements, are logically aligned to scenarios, and include complete, accurate evidence.
Contract type: Freelance
Language: Japanese (Japan)
Estimated volume: Approximately 30 hours per week, depending on the required review target and project volume.
Start date: ASAP
What you will do:
Review rater worksheets for compliance with formatting requirements.
Verify that responses are logically correct and aligned with the assigned scenarios.
Assess ratings and rationales for accuracy, consistency, and completeness.
Confirm that required screenshots, retrievals, and personalization evidence meet project guidelines.
Provide clear, concise, and actionable feedback; request corrections where needed.
Flag ambiguous cases, systemic issues, or guideline gaps to the project team.
Requirements:
To be located and have the right to work in Japan.
An existing, actively used
Gmail account
Proven experience in Quality Audit/QA review (content evaluation, relevance, or similar).
Familiarity with maps/local search user experiences and personalization concepts.
Strong proficiency with spreadsheets (Google Sheets or equivalent).
Excellent attention to detail and consistent application of guidelines.
Clear written communication and a constructive feedback style.
Please note:
This project requires opt-in, consent-based access to limited elements of your activity history. A consent form will be provided for you to review and sign before participation. Please note that the consent form and its terms may be subject to change as project requirements evolve.
A desktop or laptop computer is required to complete the application and onboarding process. Mobile devices are not supported.
Location: Kuala Lumpur, Malaysia
About Us
Established in 2018, Bybit is one of the world’s leading cryptocurrency exchanges and digital financial platforms, serving over 80 million users across more than 200 countries and regions. Powered by world-class technology and a user-first mindset, Bybit delivers a seamless ecosystem across trading, payments, wealth management, custody, institutional services, and Web3 — connecting users to the future of digital finance.
Our core values define how we build. We listen, care and improve to create products and experiences that put users first. Backed by a global team of ambitious builders, problem-solvers, and innovators, we foster a high-performance and fast-moving environment where talent is empowered to drive real impact at the global scale. Supported by 24/7 multilingual customer service and a strong commitment to innovation, we are shaping the future of finance through technology, collaboration, and bold execution.
Today, Bybit is recognized as one of the most trusted and transparent platforms in the digital asset industry, continuing to expand its global presence while building the infrastructure for the next generation of financial services.
Job Responsibilities
Responsible for building risk control capabilities for deposit/withdrawal and on-chain fund operation scenarios, covering core processes such as wallet transactions, signing pipelines, staking/redemption, and cross-chain bridge transfers.
Design and implement blockchain transaction risk control strategies, including risk identification, rule validation, anomaly interception, and pipeline consistency assurance.
Build a risk control decision engine, supporting the implementation of rule engines, decision trees, and strategy orchestration in fund security scenarios, forming a unified risk control capability covering on-chain fund operations.
Collaborate closely with wallet, asset, and security teams to continuously improve the security, traceability, and system stability of fund pipelines.
Job Requirements
5+ years of backend development experience; proficient in at least one of Go / Node.js; familiar with high-concurrency architecture (microservices, message queues, caching, rate limiting) and MySQL, Redis.
Proficient in at least one public blockchain (Ethereum / Bitcoin / BSC); familiar with on-chain querying (Web3.js / Ethers.js / The Graph); able to read Solidity contract code; knowledgeable about HD wallets, multi-sig, MPC, and other wallet technologies.
5+ years of risk control development experience in internet/finance/blockchain/payments; practical experience with rule engines or decision trees; has led or deeply participated in building deposit/withdrawal risk control systems.
Deep understanding of fund security; familiar with signing mechanisms, transaction validation, and security risk control solutions.
Nice to Have
Hands-on risk control experience at platforms with tens of millions of DAU or millions of daily transactions.
Experience in emergency response to major security incidents (hacking attacks, coin theft, fund anomalies).
Experience building a risk control system from scratch (0 to 1).
Why Join Us
At Bybit, we are committed to fostering a supportive and enriching work environment.
Our benefits include:
- Study Growth Fund: We support your professional development and continuous learning.
- Internal Events: Participate in regular team-building activities, workshops, and events designed to promote collaboration and innovation.
- Global Collaboration: Be part of a diverse, international team, working alongside colleagues from around the world.
- Career Advancement: Access opportunities for growth and advancement within a rapidly expanding global company.
- Internal Mobility: Grow with us- Your long-term development is important to us. We offer internal job opportunities to help build your career path.
Location: Kuala Lumpur, Malaysia
About Us
Established in 2018, Bybit is one of the world’s leading cryptocurrency exchanges and digital financial platforms, serving over 80 million users across more than 200 countries and regions. Powered by world-class technology and a user-first mindset, Bybit delivers a seamless ecosystem across trading, payments, wealth management, custody, institutional services, and Web3 — connecting users to the future of digital finance.
Our core values define how we build. We listen, care and improve to create products and experiences that put users first. Backed by a global team of ambitious builders, problem-solvers, and innovators, we foster a high-performance and fast-moving environment where talent is empowered to drive real impact at the global scale. Supported by 24/7 multilingual customer service and a strong commitment to innovation, we are shaping the future of finance through technology, collaboration, and bold execution.
Today, Bybit is recognized as one of the most trusted and transparent platforms in the digital asset industry, continuing to expand its global presence while building the infrastructure for the next generation of financial services.
Job Summary:
Primarily responsible for security auditing and security governance of the company's platform systems. Identify potential risks in business requirements and technical implementation plans, provide solutions, and drive their implementation.
Job Responsibilities:
Conduct manual code security audits on business code (Java, Golang, JS, C++, etc.) and write audit reports.
Track domestic and international security developments; analyze and reproduce the latest security vulnerabilities.
Deeply understand and master the company's product business; identify security risks in business architecture, business processes, and business logic; provide corresponding security solutions and drive their implementation.
Drive security solution implementation, risk governance, etc.
Job Requirements:
Associate degree or above; requirements may be relaxed for candidates with strong capabilities.
At least 3+ years of business development or audit experience based on Java or Go; has led or participated in SDL (Security Development Lifecycle) implementation.
Proficient in the underlying principles, discovery methods, vulnerable code scenarios, and exploitation techniques of common security vulnerabilities (not limited to OWASP Top 10).
Expert-level proficiency in Java and/or Go tech stacks; understands language-specific characteristics and common mainstream development frameworks, with relevant code audit experience.
Familiar with common white-box audit methodologies, with the ability to track and reproduce the latest vulnerabilities.
Familiar with mainstream development frameworks such as SpringMVC, SSM, or Gin, GoZero, etc.
Has a solid understanding of penetration testing; proficient in common penetration testing methods and familiar with the principles and exploitation techniques of common vulnerabilities.
Able to proficiently use AI tools to enhance security work efficiency.
Highly proactive with strong logical thinking; possesses good communication, coordination, organizational skills, and documentation writing ability.
Experience with TEE (Trusted Execution Environment) and other security encryption, data protection technical architectures and solution implementation is preferred.
Nice to Have:
Has submitted high-quality vulnerabilities to domestic or international SRC/bug bounty platforms.
Has discovered CVE or CNVD general vulnerabilities.
Has Java or Go code audit experience with demonstrated results.
Why Join Us
At Bybit, we are committed to fostering a supportive and enriching work environment.
Our benefits include:
- Study Growth Fund: We support your professional development and continuous learning.
- Internal Events: Participate in regular team-building activities, workshops, and events designed to promote collaboration and innovation.
- Global Collaboration: Be part of a diverse, international team, working alongside colleagues from around the world.
- Career Advancement: Access opportunities for growth and advancement within a rapidly expanding global company.
- Internal Mobility: Grow with us- Your long-term development is important to us. We offer internal job opportunities to help build your career path.
Location: Kuala Lumpur, Malaysia
About Us
Established in 2018, Bybit is one of the world’s leading cryptocurrency exchanges and digital financial platforms, serving over 80 million users across more than 200 countries and regions. Powered by world-class technology and a user-first mindset, Bybit delivers a seamless ecosystem across trading, payments, wealth management, custody, institutional services, and Web3 — connecting users to the future of digital finance.
Our core values define how we build. We listen, care and improve to create products and experiences that put users first. Backed by a global team of ambitious builders, problem-solvers, and innovators, we foster a high-performance and fast-moving environment where talent is empowered to drive real impact at the global scale. Supported by 24/7 multilingual customer service and a strong commitment to innovation, we are shaping the future of finance through technology, collaboration, and bold execution.
Today, Bybit is recognized as one of the most trusted and transparent platforms in the digital asset industry, continuing to expand its global presence while building the infrastructure for the next generation of financial services.
Job Responsibilities
End-to-End Fund Risk Strategy System Building
Responsible for fund security across all business lines (e.g., wealth management, trading, RWA, and other core products). Build real-time, layered risk control decision strategies based on device fingerprints, behavioral time-series, transaction chains, relationship graphs, and network features.
Risk Data Analysis, Loss Quantification & Adversarial Review
Leverage massive transaction data in Hive using SQL and Python to conduct risk case mining and black market attack chain reconstruction. Continuously monitor core metrics: actual loss rate, interception rate, false positive rate; identify strategy gaps and produce thematic analysis reports.
Strategy Design, Gray Release Experimentation & Iterative Deployment
Design rule-based strategies; manage gray-release traffic allocation, A/B experiment design, and effectiveness evaluation. Drive strategy integration into the real-time decision engine for production launch. Continuously counter black market actors, forming a closed loop of risk identification → intervention → post-mortem → iteration.
Major Loss Incident Emergency Response
Participate in emergency triage for major online fund security incidents: stop the bleeding, trace the risk source, and implement urgent blocks. Accumulate black market intelligence and gang characteristics to build risk feature libraries and intelligence databases.
Cross-Team Collaboration & Risk Control Capability Building
Coordinate with algorithm, product, engineering, compliance, and anti-fraud operations teams. Integrate machine learning models, device fingerprinting, and behavioral sequence capabilities to optimize the decision system. Abstract common risk control capabilities and drive the construction of feature platforms and risk control middle platforms.
Risk Metrics System Construction
Build scenario-based risk monitoring dashboards, establish anomaly fluctuation early-warning mechanisms, and drive long-term risk governance initiatives.
──────
Job Requirements
Basic Qualifications
Bachelor's degree or above; Statistics, Mathematics, Computer Science, Financial Engineering, or Data Science preferred; Master's degree preferred.
3–6 years of hands-on experience in payment / internet fund security / transaction anti-fraud risk control strategy. Experience at Alipay, WeChat Pay, leading consumer finance companies, or bank online payment risk control is preferred.
Skills & Capabilities
Proficient in complex SQL (Hive/MaxCompute); skilled in Python for data mining and feature analysis; able to independently complete risk quantification calculations and experiment evaluation.
Deep understanding of payment risk scenarios: account takeover (ATO), telecom fraud, money mule/fund running, abnormal batch transactions. Familiar with real-time risk control pipelines, strategy deployment processes, and metrics evaluation frameworks.
Possesses an adversarial mindset; able to proactively detect emerging black market tactics from massive data. Excels at finding the optimal balance among financial loss, false interceptions, and business conversion.
Why Join Us
At Bybit, we are committed to fostering a supportive and enriching work environment.
Our benefits include:
- Study Growth Fund: We support your professional development and continuous learning.
- Internal Events: Participate in regular team-building activities, workshops, and events designed to promote collaboration and innovation.
- Global Collaboration: Be part of a diverse, international team, working alongside colleagues from around the world.
- Career Advancement: Access opportunities for growth and advancement within a rapidly expanding global company.
- Internal Mobility: Grow with us- Your long-term development is important to us. We offer internal job opportunities to help build your career path.
Location: Lithuania - Remote
Wrike is the most powerful work management platform. Built for teams and organizations looking to collaborate, create, and exceed every day, Wrike brings everyone and all work into a single place to remove complexity, increase productivity, and free people up to focus on their most purposeful work.
Wrike is our people, not a place. As a distributed team, we own our growth, stay globally connected, and rely on the product we build to deliver impactful work alongside brilliant minds. You'll have real ownership over meaningful work, a global team that has your back, and the flexibility to do your best work your way. If that sounds like you, we'd love to hear from you.
Our vision:
A world where everyone is free to focus on their most purposeful work, together.
About the Role:
You'll help build the very AI-powered platform you use every day, with real autonomy over the features you ship. Wrike’s Backend Reliability (BRE) team is the backbone of our backend infrastructure and the guardian of our uptime. Our mission is to achieve and sustain 99.99% availability while building the tools, components, and safety nets that the entire engineering organization relies on. As a Senior / Staff Backend Engineer on this team, you won’t just close tickets - you’ll architect core reliability solutions that shape how Wrike scales, performs, and recovers from failure.
Your Impact:
Design, build, and maintain critical reliability components such as HTTP rate limiters, internal DB schema migration tools, circuit breakers, and distributed Redis-based caching.
Troubleshoot complex production issues, optimize PostgreSQL usage, and ensure our distributed systems remain performant and stable under high load.
Lead preliminary investigations during severe production incidents: identify likely root causes, assess impact, and propose mitigation options. The long-term fixes are then implemented by the owning team, based on your findings.
Create scalable, reusable tools and frameworks that help other engineering teams build more resilient services.
Leverage AI-powered tools and coding agents to accelerate development, analyze architectures, and automate repetitive or error-prone tasks.
Influence reliability best practices across engineering by sharing knowledge, reviewing designs, and setting high technical standards.
Your Qualifications:
Strong expertise with Java/JVM, building scalable, high-performance backend systems; open to leveraging other languages when appropriate.
Solid understanding of distributed systems concepts, including high availability, CAP theorem, and fault tolerance.
Deep experience with relational databases (PostgreSQL) and key–value / non-relational storages (Redis).
Practical experience with containerization and cloud-native environments, including Docker and Kubernetes.
Hands-on experience with message brokers such as RabbitMQ or Kafka.
Ability to work independently with minimal supervision, using critical thinking to question assumptions and validate your own decisions.
Strong written and spoken English skills suitable for collaborating in an international engineering environment.
Standout Qualities:
Background in infrastructure engineering or Site Reliability Engineering (SRE), including infrastructure-as-code practices.
Experience leading technical initiatives, driving cross-team projects, and mentoring other engineers while remaining an individual contributor.
Familiarity with observability and monitoring stacks (e.g., Graylog, Zabbix, Grafana) and/or data analytics tools such as BigQuery.
A strong interest in how complex systems fail and a track record of designing them to recover gracefully.
Team Dynamics:
You will join the Backend Reliability (BRE) team, a small, highly specialized, senior group focused solely on Wrike’s reliability. The team operates as an internal “reliability task force,” partnering closely with product and platform engineering teams across the company. You’ll collaborate with other senior engineers who value autonomy, deep technical discussions, and rigorous engineering practices. The culture is ownership-driven: you are trusted to manage your time, make architectural decisions, and drive initiatives to completion.
Our Work Style:
The BRE team works on core backend and infrastructure services that support millions of users. We operate in a collaborative environment that values clear communication, thoughtful design, and fast feedback loops.
Tech focus areas include: Java/JVM-based services, PostgreSQL, Redis, Docker, Kubernetes, RabbitMQ/Kafka, and observability/monitoring tools.
We encourage the use of modern AI-based tooling and coding agents as part of daily development and troubleshooting workflows.
Work is organized with an emphasis on impact and reliability goals rather than ticket volume, giving you room for deep work and long-term improvements.
Hybrid work mode (Prague, Czech Republic / Nicosia, Cyprus), with flexibility to balance focused individual work and collaborative sessions.
What’s next?
Interview with a Recruiter
Technical interview
System Design Interview
Cultural interview
Your recruitment buddy will be
Aleksandar Chernev
, Senior Technical Recruiter.
#LI-AC1
Who Is Wrike and Our Culture
We’re a team of innovators and creators who solve the complex work problems of today and tomorrow.
Hybrid work mode
Wrike is our people, not a place. With 1,000+ employees collaborating across nearly every time zone, we support talent through 10 global hubs — Australia, Costa Rica, Cyprus, Czechia, Estonia, France, India, Ireland, Japan, and the United States — offering flexible ways of working that include remote work, hybrid environments, and co-working spaces across many locations.
While flexibility looks different across teams and regions, employees located near certain hubs — particularly in Prague (CZ), Nicosia (CY), Bangalore (IN), and Rennes (FR) — are generally expected to collaborate in person around 2–3 days per week, balancing the flexibility of distributed work with opportunities for in-person collaboration and connection.
Our persona
💡 Smart:
We love what we do, and we’re great at it because this is our domain. Our combined knowledge in this space is unmatched.
💚 Dedicated:
We get up every day focused on helping our customers win. We’re committed to helping our teammates win, too!
🤗 Approachable:
We're friendly, easy to get along with, considerate, and helpful.
Our culture and Values
🤩 Customer-Focused
We care about our customers.
We understand the customer journey, experience, and value derived from Wrike. Decision-making and action-taking are done with the customer in mind.
🤝 Collaborative
We work as one and win together,
each bringing unique strengths that contribute to diversity of thought for better outcomes. Leveraging our own work management platform, we foster an environment of creative collaboration and shared achievement.
🎨 Creative
We strive to succeed through continuous innovation.
It’s our pursuit of novel concepts that helped us create a market category. We continue to cultivate a workplace that fosters creative thinking as a means of transcending conventional boundaries and empowers us to break new ground to deliver extraordinary work management solutions.
💪 Committed
We believe in ownership at all levels of the organization,
by owning workflows from start to finish. Each member of our team is an integral part of this commitment, establishing work as a platform for personal growth and transformation, as well as collective success and growth.
Check out our
LinkedIn Life Page
,
Company culture page
,
Instagram
,
Wrike Engineering Team
,
Medium
,
Meetup.com
,
Youtube
for a feel for what life is like at Wrike.
Location: Poland - Remote
Wrike is the most powerful work management platform. Built for teams and organizations looking to collaborate, create, and exceed every day, Wrike brings everyone and all work into a single place to remove complexity, increase productivity, and free people up to focus on their most purposeful work.
Wrike is our people, not a place. As a distributed team, we own our growth, stay globally connected, and rely on the product we build to deliver impactful work alongside brilliant minds. You'll have real ownership over meaningful work, a global team that has your back, and the flexibility to do your best work your way. If that sounds like you, we'd love to hear from you.
Our vision:
A world where everyone is free to focus on their most purposeful work, together.
About the Role:
You'll help build the very AI-powered platform you use every day, with real autonomy over the features you ship. Wrike’s Backend Reliability (BRE) team is the backbone of our backend infrastructure and the guardian of our uptime. Our mission is to achieve and sustain 99.99% availability while building the tools, components, and safety nets that the entire engineering organization relies on. As a Senior / Staff Backend Engineer on this team, you won’t just close tickets - you’ll architect core reliability solutions that shape how Wrike scales, performs, and recovers from failure.
Your Impact:
Design, build, and maintain critical reliability components such as HTTP rate limiters, internal DB schema migration tools, circuit breakers, and distributed Redis-based caching.
Troubleshoot complex production issues, optimize PostgreSQL usage, and ensure our distributed systems remain performant and stable under high load.
Lead preliminary investigations during severe production incidents: identify likely root causes, assess impact, and propose mitigation options. The long-term fixes are then implemented by the owning team, based on your findings.
Create scalable, reusable tools and frameworks that help other engineering teams build more resilient services.
Leverage AI-powered tools and coding agents to accelerate development, analyze architectures, and automate repetitive or error-prone tasks.
Influence reliability best practices across engineering by sharing knowledge, reviewing designs, and setting high technical standards.
Your Qualifications:
Strong expertise with Java/JVM, building scalable, high-performance backend systems; open to leveraging other languages when appropriate.
Solid understanding of distributed systems concepts, including high availability, CAP theorem, and fault tolerance.
Deep experience with relational databases (PostgreSQL) and key–value / non-relational storages (Redis).
Practical experience with containerization and cloud-native environments, including Docker and Kubernetes.
Hands-on experience with message brokers such as RabbitMQ or Kafka.
Ability to work independently with minimal supervision, using critical thinking to question assumptions and validate your own decisions.
Strong written and spoken English skills suitable for collaborating in an international engineering environment.
Standout Qualities:
Background in infrastructure engineering or Site Reliability Engineering (SRE), including infrastructure-as-code practices.
Experience leading technical initiatives, driving cross-team projects, and mentoring other engineers while remaining an individual contributor.
Familiarity with observability and monitoring stacks (e.g., Graylog, Zabbix, Grafana) and/or data analytics tools such as BigQuery.
A strong interest in how complex systems fail and a track record of designing them to recover gracefully.
Team Dynamics:
You will join the Backend Reliability (BRE) team, a small, highly specialized, senior group focused solely on Wrike’s reliability. The team operates as an internal “reliability task force,” partnering closely with product and platform engineering teams across the company. You’ll collaborate with other senior engineers who value autonomy, deep technical discussions, and rigorous engineering practices. The culture is ownership-driven: you are trusted to manage your time, make architectural decisions, and drive initiatives to completion.
Our Work Style:
The BRE team works on core backend and infrastructure services that support millions of users. We operate in a collaborative environment that values clear communication, thoughtful design, and fast feedback loops.
Tech focus areas include: Java/JVM-based services, PostgreSQL, Redis, Docker, Kubernetes, RabbitMQ/Kafka, and observability/monitoring tools.
We encourage the use of modern AI-based tooling and coding agents as part of daily development and troubleshooting workflows.
Work is organized with an emphasis on impact and reliability goals rather than ticket volume, giving you room for deep work and long-term improvements.
Hybrid work mode (Prague, Czech Republic / Nicosia, Cyprus), with flexibility to balance focused individual work and collaborative sessions.
What’s next?
Interview with a Recruiter
Technical interview
System Design Interview
Cultural interview
Your recruitment buddy will be
Aleksandar Chernev
, Senior Technical Recruiter.
#LI-AC1
Who Is Wrike and Our Culture
We’re a team of innovators and creators who solve the complex work problems of today and tomorrow.
Hybrid work mode
Wrike is our people, not a place. With 1,000+ employees collaborating across nearly every time zone, we support talent through 10 global hubs — Australia, Costa Rica, Cyprus, Czechia, Estonia, France, India, Ireland, Japan, and the United States — offering flexible ways of working that include remote work, hybrid environments, and co-working spaces across many locations.
While flexibility looks different across teams and regions, employees located near certain hubs — particularly in Prague (CZ), Nicosia (CY), Bangalore (IN), and Rennes (FR) — are generally expected to collaborate in person around 2–3 days per week, balancing the flexibility of distributed work with opportunities for in-person collaboration and connection.
Our persona
💡 Smart:
We love what we do, and we’re great at it because this is our domain. Our combined knowledge in this space is unmatched.
💚 Dedicated:
We get up every day focused on helping our customers win. We’re committed to helping our teammates win, too!
🤗 Approachable:
We're friendly, easy to get along with, considerate, and helpful.
Our culture and Values
🤩 Customer-Focused
We care about our customers.
We understand the customer journey, experience, and value derived from Wrike. Decision-making and action-taking are done with the customer in mind.
🤝 Collaborative
We work as one and win together,
each bringing unique strengths that contribute to diversity of thought for better outcomes. Leveraging our own work management platform, we foster an environment of creative collaboration and shared achievement.
🎨 Creative
We strive to succeed through continuous innovation.
It’s our pursuit of novel concepts that helped us create a market category. We continue to cultivate a workplace that fosters creative thinking as a means of transcending conventional boundaries and empowers us to break new ground to deliver extraordinary work management solutions.
💪 Committed
We believe in ownership at all levels of the organization,
by owning workflows from start to finish. Each member of our team is an integral part of this commitment, establishing work as a platform for personal growth and transformation, as well as collective success and growth.
Check out our
LinkedIn Life Page
,
Company culture page
,
Instagram
,
Wrike Engineering Team
,
Medium
,
Meetup.com
,
Youtube
for a feel for what life is like at Wrike.
Location: Hybrid
About Us
At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.
At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.
Available Locations: Singapore or Sydney
About the Team
In this role, you will be focused on the build out and expansion of our global network. You'll work closely with Cloudflare’s Network Infrastructure planning team, Network Engineering team, Infrastructure automation team, Site Reliability Engineering (SRE) team, Project Managers and with various vendors and partners (including hardware vendors, logistics, datacenter and network providers, and ISPs) to plan and aggressively execute the expansion of our network. You will further be responsible for the development and implementation of consistent processes and tools for consistent and effective management of our infrastructure. This is a highly visible position that requires deep technical understanding of datacenter infrastructure, physical and logical network configuration, system administration, server provisioning and troubleshooting, and basic experience with data analysis and project management.
To be successful in this position, you should have excellent technical skills, communication skills, and be able to navigate a range of challenges and constraints (e.g. schedule adherence, time zones, and cultures). You will have the opportunity to (literally) build a faster, safer Internet for our millions of users and the billions of web surfers that visit their sites each month.
Key responsibilities
Provisioning, monitoring and maintaining hardware, software, and network in new Cloudflare data centers.
Perform server administration tasks remotely using IPMI/BMC tools, including server provisioning, monitoring, troubleshooting and firmware updates.
Perform network configuration tasks to network devices in greenfield deployment and brownfield migration activities.
Managing remote contractors to complete datacenter installations and upgrades (rack and stack), including coordinating with hardware manufacturers, datacenter and network providers, logistics partners and other service providers in support of our 700+ growing datacenter locations.
Build automation to eliminate repetitive work using Python scripts and templated change management workflows (Python + Jinja-based) that standardize deployment steps. Our team also develops agentic AI tools to reduce admin overhead and handling other operational toil.
Planning and implementing network and server installations, including in the areas of facility power (AC/DC), cooling, security/access, rack layout and cable management.
Providing technical leadership and guidance to remote contractors and junior team members during deployment activities—walking them through configurations, troubleshooting steps, and quality checks.
Creating and maintaining documentation, plans, SOPs, MOPs and runbooks.
Collaborating with internal teams (Infrastructure Engineering and Planning, Network Engineering and SRE) on day-to-day operations and project planning.
Coordinating installation of cross-connects globally in support of physical network expansion.
Assisting with the definition, documentation and implementation of consistent processes and standardization across all regions.
Limited travel.
Required Experience
Minimum of 5 years of prior relevant experience in Data Center Operations, Site Reliability Engineering, Linux Systems Administration, Network Engineering, and/or DevOps experience.
Familiarity with day-to-day tasks and projects common in Data Center Operations.
Experience with optical transport technologies such as CWDM/DWDM.
Configuration management tool experience like Saltstack, Chef, Puppet or Ansible.
Knowledge and exposure to Network Protocols, Topologies and Enterprise architecture.
Experience writing network configuration and design documentation.
Experience with network and server installation, configuration, and troubleshooting.
Experience with remote "lights-out" and out-of-band access to data center resources (IPMI/BMC for remote server administration).
Experience solving problems through automation, writing Python or Bash scripts for internal tools and workflow improvements.
Experience running and improving operational processes in a rapidly changing environment.
Strong verbal and written communication skills, problem-solving skills, and attention to detail. Must be proactive in performing due diligence, e.g. checking for blockers before executing work, spotting patterns in failures or process improvements.
Experience building or working with agentic AI tools for workflow automation
Examples of desirable skills, knowledge and experience
Bachelor’s degree in Computer Science, Engineering, MIS, or a related field is a plus.
Direct experience executing on datacenter / infrastructure projects with many moving parts.
Experience installing / maintaining datacenter (and other IT) infrastructure and DCIM tools.
Experience running and improving operational processes in a rapidly changing environment.
Understanding of BGP and anycast routing.
Good working knowledge of major networking and optical device OS such as Juniper Junos, Cisco IOS, Cisco NX-OS, Arista EOS, SONiC, Ciena, Nokia (Infinera).
Proficient in one or more programming languages and willing to learn new ones when required.
Ability to write scripts for internal tools and automation workflows.
Ability to learn fast and execute on multiple tasks simultaneously while maintaining quality.
Ability to manage MS Excel and Google Spreadsheets.
Comfortable handling basic program management responsibilities (prioritization, planning, scheduling, status reporting) using tools like JIRA.
Experience managing remote contractors
Strong team player who collaborates across functions (planning, network engineering, SRE, vendors).
Bonus Points
Professional level network certification(s) (JNCIP, CCNP, etc) or higher.
Linux certifications.
Experience with continuous / rapid deployment.
Experience working in a 24/7/365 mission-critical service environment (on-call rotation required)
Knowledge of the OSI-model and experience isolating network, hardware and software issues.
What Makes Cloudflare Special?
We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.
Project Galileo
: Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost.
Athenian Project
: In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states.
1.1.1.1
: We released
1.1.1.1
to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our
privacy commitment
and ensure that no user data is sold to advertisers or used to target consumers.
Sound like something you’d like to be a part of? We’d love to hear from you!
Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs. More details about this will be available at that stage of the interview process.
This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.
Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness. All qualified applicants will be considered for employment without regard to their, or any other person's, perceived or actual
race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, national origin, ancestry, citizenship, age, physical or mental disability, medical condition, family care status, or any other basis protected by law.
We are an AA/Veterans/Disabled Employer.
Cloudflare provides reasonable accommodations to qualified individuals with disabilities. Please tell us if you require a reasonable accommodation to apply for a job. Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment. If you require a reasonable accommodation to apply for a job, please contact us via e-mail at
hr@cloudflare.com
or via mail at 101 Townsend St. San Francisco, CA 94107.
Location: Casablanca
THE ROLE
As a Customer Support Agent at Taptap Send, you’ll be the first point of contact for our customers — helping them resolve issues quickly and effectively while delivering an excellent support experience. This is a development-focused role: as you gain experience and demonstrate strong performance, you’ll have the opportunity to progress into a Tier 2 / Escalation Agent position, handling more complex and sensitive cases.
RESPONSIBILITIES
- Provide timely, accurate, and empathetic support to customers via chat, email, and phone
- Resolve common customer issues efficiently, following internal processes and SLAs
- Accurately document customer interactions and resolutions
- Escalate complex or sensitive cases to the Tier 2 / Escalation team following defined procedures
- Collaborate closely with other agents and internal teams to ensure customer satisfaction
- Identify recurring issues and flag potential improvements to processes or tools
- Keep up to date with product features, policy updates, and process changes
- Participate in training sessions and actively develop skills needed for Tier 2 / Escalation responsibilities
REQUIREMENTS
- 1+ years of experience in customer support or a similar customer-facing role
- Excellent communication skills, both written and verbal
- Patience, empathy, and professionalism when dealing with customers
- Strong problem-solving and multitasking abilities
- Comfortable using customer management and ticketing tools
- Fluent in English plus one of: Bengali, Nepali, Hindi, Portuguese or Creoles
- Organised, detail-oriented, and motivated to learn and grow
NICE TO HAVE
- Experience in a fast-paced work environment
- Knowledge of payments, refunds, or transaction-related issues
- Familiarity with the money transfer or fintech industry
- Proven ability to de-escalate challenging situations
- Banking customer support experience
CAREER DEVELOPMENT
This position offers a clear path for professional advancement. Agents who demonstrate excellence in customer satisfaction, communication quality, and process adherence will have the opportunity to move into a Tier 2 / Escalation role, where they’ll take on more complex cases and contribute to continuous improvement initiatives.
About Us
We’re building the world’s leading cross-border fintech for emerging markets - empowering families, fuelling local economies, and changing how millions access financial services.
Since our launch in 2019, we have transformed how money moves across borders with our operations spanning 6 out of 7 continents and covering both the busiest and most underserved (remittance) corridors. We tapped into a massive shift - from banks to phones - bringing digital finance to places where traditional systems never reached. The next stage of growth will fuel a network of services and products especially designed to make money more accessible to diaspora communities including local cards, and additional savings and payments features.
We’re growing fast, backed by world-class investors, and scaling a product that blends real world impact with cutting edge fintech innovation.
Here’s a little more:
- Founded by Harvard grads and 3-time founders who previously built Segovia (acquired) and GiveDirectly (>$300M revenue, fastest-growing NGO in the world)
- Backed by top investors including Spark Capital, Canaan, Reid Hoffman, Breyer Capital, Unbound, Wamda, and more
- Built by global top performers from Bain, Google, McKinsey, Uber, Checkout, Bolt, and beyond - we move fast, stay humble, and care deeply about our mission
- Truly global team - 250+ people, 50+ nationalities, 50+ languages
- Guided by our values - ownership, impact, humility, and heart - in deed, not just word
TAPTAP VALUES https://www.taptapsend.com/our-values
Impact first
Team next
Accept reality
Propose solutions
Win with grit
Be proactively candid, with yourself and others
Love the particular
Own it
Create positive energy
Maybe, even have fun
Taptap Send is an equal opportunity employer dedicated to building an inclusive and diverse workforce. All employment decisions are decided on the basis of qualifications, experience and business need. We strongly encourage applications who are members of underrepresented communities to apply.
If you require reasonable adjustments to be made during the recruitment process, please do not hesitate to let us know. Any information you provide us in this respect will only be used to accommodate your requirements.
Note: we recognize imposter syndrome is real - any candidate that does not perfectly fit every characteristic of this role is still strongly encouraged to apply.
Location: Johannesburg, South Africa
P.I. Works is the first company in the world to automate the management of a commercial 5G network.
Our automated network management products and services empower mobile operators to accelerate network transformation and to drive network quality and efficiency on the path to 5G. These solutions have been deployed across more than 84 mobile operators in 58 countries around the world.
Our success is built by our people that strive for excellence and deliver great value to our customers.
At the core of our success are a culture built on integrity, trust, and respect. We are looking for
Network Data Solutions Delivery Engineer
to lead mobile network product delivery projects, with a focus on next-generation optimization techniques with Network Automation Solutions, and keeps full engagement with our customer as a single point of contact.
Job Description:
Work closely with customer mobile network teams for network performance monitoring and reporting activities
Provide onsite support for customer and feedback to product, integration and support teams
Create custom dashboards and automated reports on key business metrics for various use cases
Participate in technical meetings, monitor products performance, track customer demands
Prepare and issue technical guidelines and results of technical studies
Prepare and issue engineering level and executive-level reports
Required Qualifications:
Diploma from Engineering Departments relevant to Mobile Telecommunications or Computer Science
Basic Knowledge on Telecom domain KPIs and Parameters (Radio, Core, Transmission)
Good level of SQL and ETL platform knowledge, able to write complex SQL queries
Experience with tools in performance management (Optima/Helix, PrOptima, PRS, Eniq, etc.) is a plus
Very good command of English
Must have an excellent customer relationship with both verbal and written communication skills
Experience with OEM vendor EMS/OSS systems and Managed Objects, parameters and measurements is a plus
Reporting / BI Tools experience (PowerBI, Tableau, Qlikview, etc.) is a plus
Location: Al Khobar, Saudi Arabia
We are seeking a detail-oriented and organized Administrative Clerk / Technical Engineering Clerk to provide comprehensive administrative and clerical support to the Department Head, ensuring smooth day-to-day office operations. The ideal candidate will be responsible for maintaining documentation, coordinating schedules, processing administrative requests, and supporting internal communication while ensuring accuracy, confidentiality, and efficiency.
Key Responsibilities
* Provide administrative and clerical support to the Department Head.
* Maintain employee records, filing systems, and timekeeping documentation.
* Process leave requests, expense reimbursements, vendor payments, gate passes, and other administrative transactions.
* Prepare reports, letters, meeting minutes, and official correspondence.
* Manage calendars, schedule meetings, appointments, and travel arrangements.
* Handle incoming calls, emails, visitors, and general correspondence professionally.
* Review, edit, and format documents to ensure accuracy and compliance.
* Monitor office supplies, equipment, and administrative procedures.
* Coordinate communication between the Department Head, internal teams, and external stakeholders.
* Perform other administrative duties as assigned.
Requirements
5 - 8 years of work experience
Diploma in one of the following disciplines - Business Administration, Human Resources, Office Administration, Secretarial Studies, Accounting, Management Information Systems (MIS), Marketing.
Provides clerical support to a Department Head
Scope includes routine clerical tasks
Maintains Department timekeeping and filing systems, initiates employee actions, expense reimbursements, leave processing, vendor payments, gate passes and other miscellaneous system related tasks
Types reports, letters and other routine correspondence, and takes dictation and minutes as required
Manages diary, schedules meetings and appointments, and handles travel arrangements
Screens and directs telephone calls and visitors accordingly, and handles requests and queries appropriately
Receives and distributes incoming mail / correspondence
Acts as point of contact for document review, editing and formatting
Operates office equipment, and maintains office systems and procedures
Acts as point of contact between the Director and direct reports, as well as other internal/external contacts, orders and manages office supplies, and performs other duties as requested by the Department Head
Location: Makkah, Saudi Arabia
We are seeking an experienced
Core Logging Geologist
to join our mineral exploration team. The successful candidate will be responsible for detailed geological logging of drill core, sample management, and supporting exploration programs focused on
base metals with a strong emphasis on gold exploration
. The role requires excellent geological interpretation skills, adherence to industry standards, and the ability to work effectively in remote field environments.
Key Responsibilities
Perform detailed geological, structural, alteration, mineralization, and geotechnical logging of diamond drill core.
Identify and record lithological units, mineral assemblages, alteration styles, and structural features accurately.
Support exploration targeting through geological interpretation and integration of drilling data.
Ensure accurate sample selection, marking, and preparation in accordance with QA/QC procedures.
Maintain high-quality geological databases and ensure data integrity.
Work closely with drilling contractors and exploration teams to coordinate drilling activities and core handling.
Assist in geological mapping, trench logging, and field reconnaissance as required.
Interpret exploration results and contribute to technical reports and daily progress updates.
Follow company Health, Safety, and Environmental (HSE) policies and maintain safe work practices.
Support resource evaluation activities by providing accurate geological data.
Qualifications
Bachelor's degree in Geology, Applied Geology, or a related Earth Science discipline.
Minimum
5 years of hands-on field experience
in mineral exploration.
Proven expertise in
core logging for base metal exploration
, with significant experience in
gold exploration projects
.
Strong understanding of structural geology, alteration mineralogy, and ore deposit geology.
Experience with geological logging software and database management systems.
Knowledge of QA/QC protocols for drilling and sampling.
Ability to work independently in remote field locations under challenging conditions.
Strong analytical, communication, and report-writing skills.
Proficiency in Microsoft Office and geological data management software.
Preferred Skills
Experience working on greenfield and brownfield exploration projects.
Familiarity with industry reporting standards and exploration best practices.
Ability to interpret geological data and contribute to exploration targeting.
Strong teamwork and problem-solving abilities.
Work Environment
Field-based role with extended rotations at remote exploration sites.
Willingness to travel and work flexible schedules based on project requirements.
Key Competencies
Geological interpretation
Core logging and sampling
Mineral exploration
Data accuracy and attention to detail
Team collaboration
Safety awareness
Technical reporting
Time management
Location: Warsaw, Poland
[EN]
Sperasoft is looking for experienced Senior Landscape artist to join AAA+ project. If you have a passion for biomes, terrain sculpting, material creation, and want to be part of a collaborative team pushing quality to the next level - we would like to hear from you!
Responsibilities
Create landscapes using UE5’s sculpting, painting, foliage, spline tools and external DCC such as Gaea or World Machine
Design and implement biomes, including rocks, decals, roads, embankments, and other natural elements
Build and manage landscape materials within Unreal shader system
Develop high-quality materials in Quixel Mixer or Substance Designer
Use procedural tools like PCG or Houdini to place grass, trees, rocks, and other natural assets in a fast and efficient way
Ensure performance-friendly, visually compelling landscapes aligned with art direction
Collaborate with design, lighting, and technical teams to maintain quality and consistency
Obtain Lead Artists guidance and approval as required to advance tasks
Continue to refine artistic abilities and learn new software packages and/or in-house tools
Coordinate with Senior and/or Lead Artists with mentoring Junior 3D Artists as well as sharing best project practices with them
Contribute to the team-oriented environment
[PL]
Sperasoft poszukuje Starszego Artysty Krajobrazów, który dołączy do projektu klasy AAA+. Jeśli Twoją pasją jest tworzenie biomów, rzeźbienie terenu oraz tworzenie materiałów, a także chcesz stać się częścią zgranego zespołu wchodzącego na wyższy poziom jakości – czekamy na Twoje zgłoszenie!
Zakres obowiązków:
Tworzenie krajobrazów przy użyciu narzędzi Unreal Engine 5 do rzeźbienia, malowania, roślinności i obiektów nieożywionych, a także zewnętrznych programów, takich jak Gaea czy World Machine
Projektowanie i wdrażanie biomów, w tym skał, dróg, nasypów i innych elementów naturalnych
Budowanie materiałów terenu i zarządzanie nimi w systemie shaderów silnika Unreal
Tworzenie wysokiej jakości materiałów w programach Quixel Mixer lub Substance Designer
Wykorzystywanie narzędzi proceduralnych, takich jak PCG lub Houdini, do szybkiego i wydajnego rozmieszczania trawy, drzew, skał oraz innych elementów natury
Dbanie o to, aby krajobrazy były zoptymalizowane pod kątem wydajności, atrakcyjne wizualnie i spójne z kierunkiem artystycznym
Współpraca z zespołami ds. projektowania, oświetlenia i kwestii technicznych w celu utrzymania jakości i spójności
Korzystanie ze wskazówek i decyzji Głównego Artysty
Stałe rozwijanie umiejętności artystycznych oraz nauka nowego oprogramowania lub wewnętrznych narzędzi studia
Współpraca ze starszymi artystami i liderami przy wdrażaniu młodszych artystów 3D, a także dzielenie się z nimi najlepszymi praktykami projektowymi
Wspieranie atmosfery opartej na pracy zespołowej
Requirements
[PL]
Knowledge of UE 5 and Perforce
Knowledge of 3D software (Blender/Maya/3Ds Max)
Terrain Generation software knowledge (Gaea/World Machine
Unreal Engine Landscape system & Material Graph knowledge
Understanding biome assets creation (i.e. embankment, road modules, rocks, landscape patches, decals, small set dressing assets etc)
Material creation in Quixel Mixer and Substance Designer will be a big plus, as well as knowledge of Houdini plugin for Unreal Engine
[EN] Minimalne wymagania:
Znajomość silnika Unreal Engine 5 oraz systemu Perforce
Znajomość oprogramowania 3D (Blender, Maya lub 3ds Max)
Znajomość programów do generowania terenu (Gaea lub World Machine)
Znajomość systemu krajobrazu oraz edytora materiałów w silniku Unreal Engine
Rozumienie procesu tworzenia elementów biomów (np. nasypów, modułów dróg, skał, kęp roślinności, drobnych obiektów do aranżacji sceny itp.)
Umiejętność tworzenia materiałów w programach Quixel Mixer i Substance Designer będzie dużym atutem, podobnie jak znajomość wtyczki Houdini dla silnika Unreal Engine
Benefits
[EN]
Medical Care package
MyCafeteria system - including Multisport card and more
Employee Assistance Program (EAP), offering confidential legal, financial, and personal counseling
English or Polish language classes
Sensibly flexible working hours
Additional benefits: Care Bonus to cover health, educational and safety needs, corporate parties and team buildings
[PL]
Pakiet opieki medycznej
System MyCafeteria – w tym karta MultiSport i wiele więcej
Program Wsparcia Pracowników (EAP) – oferujący poufne porady prawne, finansowe oraz psychologiczne/osobiste
Lekcje języka angielskiego lub polskiego
Elastyczne godziny pracy (w ramach potrzeb projektu)
Benefity dodatkowe: Care Bonus (pokrywający wydatki związane ze zdrowiem, edukacją i bezpieczeństwem), imprezy firmowe oraz wyjazdy integracyjne
Location: The Netherlands; Poland; Portugal; France; United Kingdom; Spain; Germany; Italy
Workplace: Remote
About the team
The Security Team is responsible for providing key security capabilities covering application, cloud and enterprise security, incident response, detection and GRC. Our team is looking for an experienced, hands-on security practitioner, who will drive the adoption of modern security processes and tooling, with focus on supporting our engineering and product teams in improving the security posture of our platforms and services.
Note: This position can be fully remote anywhere in the Netherlands.
What you will do:
- Collaborate with engineering and product on improving existing and building new product features with focus on threat modeling, assurance and secure implementation, some examples of recent work include implementation of secure key management, passwordless authentication, m2m authentication, sandboxing and compute/network/storage isolation
- Identify security gaps and vulnerabilities in ClickHouse Cloud and OSS, triage a wide range of vulnerabilities reported via our bug bounty program, responsible disclosure, GitHub Issues covering web, API and server - client assets including low level memory issues like heap or buffer overflows
- Improve and develop security assurance activities - pentests, vulnerability assessments, bug bounty programs, fuzzing
- Drive implementation and usage of engineering security tools - static, dynamic code analysis, dependency checks, code licensing compliance (working knowledge of Snyk, Semgrep, GitHub CodeQL)
- Nurture the engineering - security relationship, identify and implement process and technology improvements
- Handle information security events and incidents across ClickHouse products and services
- Develop processes, tooling and automation to scale security processes and mitigate risks to the business
What you bring along:
- Experience supporting engineering and product implementation efforts by performing threat assessments, assurance activities, advisory as well as, in some cases, implementation work across distributed systems covering web, API, client/server assets
- Strong knowledge of and experience with one or more cloud service providers (e.g. AWS, GCP, Azure), Kubernetes, Cilium
- Experience implementing and operating engineering security tools and processes (e.g. static / dynamic code analysis, software composition analysis, SBOM, OWASP SAMM, client and network fuzzing tools)
- Significant development and automation experience, ability to work with C++ code
- Security as code mindset, with focus on solving problems with automation and scale in mind
Bonus Points:
- BS, MS, or PhD in Computer Science or related field
- Previous contributions to open source projects
- Security or cloud related certifications (AWS, GCP, Azure)
PERKS
- Flexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in over 25 countries.
- Healthcare - Employer contributions towards your healthcare.
- Equity in the company - Every new eligible team member who joins our company receives equity.
- Time off - Flexible time off in the US, generous entitlement in other countries.
- A USD$500 Home office setup if you’re a remote employee.
- Global Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites.
CULTURE - WE ALL SHAPE IT
As part of a rapidly scaling start-up, you will be instrumental in shaping our culture.
Are you interested in finding out more about our culture? Learn more about our values here https://clickhouse.com/company/careers. Check out our blog posts https://clickhouse.com/blog or follow us on LinkedIn https://www.linkedin.com/company/clickhouseinc/life/0c1ee7f4-2129-488d-b413-e7f6270659fd/?viewAsMember=true to find out more about what’s happening at ClickHouse.
EQUAL OPPORTUNITY & PRIVACY
ClickHouse provides equal employment opportunities to all employees and applicants and prohibits discrimination and harassment of any type based on factors such as race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
Please see here https://clickhouse.com/legal/applicant-privacy-notice for our Privacy Statement.
Location: United States
Workplace: Remote
About the team
The Security Team is responsible for providing key security capabilities covering application, cloud and enterprise security, incident response, detection and GRC. Our team is looking for an experienced, hands-on security practitioner, who will drive the adoption of modern security processes and tooling, with focus on supporting our engineering and product teams in improving the security posture of our platforms and services.
What you will do:
- Collaborate with engineering and product on improving existing and building new product features with focus on threat modeling, assurance and secure implementation, some examples of recent work include implementation of secure key management, passwordless authentication, m2m authentication, sandboxing and compute/network/storage isolation
- Identify security gaps and vulnerabilities in ClickHouse Cloud and OSS, triage a wide range of vulnerabilities reported via our bug bounty program, responsible disclosure, GitHub Issues covering web, API and server - client assets including low level memory issues like heap or buffer overflows
- Improve and develop security assurance activities - pentests, vulnerability assessments, bug bounty programs, fuzzing
- Drive implementation and usage of engineering security tools - static, dynamic code analysis, dependency checks, code licensing compliance (working knowledge of Snyk, Semgrep, GitHub CodeQL)
- Nurture the engineering - security relationship, identify and implement process and technology improvements
- Handle information security events and incidents across ClickHouse products and services
- Develop processes, tooling and automation to scale security processes and mitigate risks to the business
What you bring along:
- Experience supporting engineering and product implementation efforts by performing threat assessments, assurance activities, advisory as well as, in some cases, implementation work across distributed systems covering web, API, client/server assets
- Strong knowledge of and experience with one or more cloud service providers (e.g. AWS, GCP, Azure), Kubernetes, Cilium, Crossplane
- Experience implementing and operating engineering security tools and processes (e.g. static / dynamic code analysis, software composition analysis, SBOM, OWASP SAMM, client and network fuzzing tools)
- Significant development and automation experience, ability to work with C++ code preferred
- Security as code mindset, with focus on solving problems with automation and scale in mind
Bonus Points:
- BS, MS, or PhD in Computer Science or related field
- Previous contributions to open source projects
- Security or cloud related certifications (AWS, GCP, Azure)
PERKS
- Flexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in over 25 countries.
- Healthcare - Employer contributions towards your healthcare.
- Equity in the company - Every new eligible team member who joins our company receives equity.
- Time off - Flexible time off in the US, generous entitlement in other countries.
- A USD$500 Home office setup if you’re a remote employee.
- Global Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites.
CULTURE - WE ALL SHAPE IT
As part of a rapidly scaling start-up, you will be instrumental in shaping our culture.
Are you interested in finding out more about our culture? Learn more about our values here https://clickhouse.com/company/careers. Check out our blog posts https://clickhouse.com/blog or follow us on LinkedIn https://www.linkedin.com/company/clickhouseinc/life/0c1ee7f4-2129-488d-b413-e7f6270659fd/?viewAsMember=true to find out more about what’s happening at ClickHouse.
EQUAL OPPORTUNITY & PRIVACY
ClickHouse provides equal employment opportunities to all employees and applicants and prohibits discrimination and harassment of any type based on factors such as race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
Please see here https://clickhouse.com/legal/applicant-privacy-notice for our Privacy Statement.
Location: Remote USA; Canada
Workplace: remote
ABOUT YOU
We are looking for an accomplished Principal Machine Learning Engineer to join our global ML organization. In this role, you will drive innovation across our machine learning ecosystem, architect advanced ML solutions, and mentor junior ML engineers around the world. You will play a key part in shaping our technical direction—leading complex ML initiatives, elevating engineering standards, and guiding teams as they build scalable, production‑ready machine learning systems.
If you are ambitious, energized by solving challenging technical problems, passionate about developing talent, and excited to influence the future of ML/AI in the video game industry, this could be the perfect role for you.
ABOUT US
Xsolla is a global commerce company with robust tools and services to help developers solve the inherent challenges of the video game industry. From indie to AAA, companies partner with Xsolla to help them fund, distribute, market, and monetize their games. Grounded in the belief in the future of video games, Xsolla is resolute in the mission to bring opportunities together, and continually make new resources available to creators. Headquartered and incorporated in Los Angeles, California, Xsolla operates as the merchant of record and has helped over 1,500+ game developers to reach more players and grow their businesses around the world. With more paths to profits and ways to win, developers have all the things needed to enjoy the game.
For more information, visit xsolla.com.
Requirements:
Modeling Depth
Advanced Degree in Statistics, machine learning or related areas. Experience in statistics/ML expertise with a track record of leading high-impact data science initiatives at scale of billions of transactions.
Hands-on experience creating, training and fine-tuning models not just integrating hosted model APIs. You should be able to walk through the data, the objective, what broke, and the before/after evaluation numbers, and why the model did not perform as expected.
Experience owning models in production: deployment, monitoring, drift detection, retraining — with real latency budgets, not just research notebooks.
Production experience with classical ML for fraud/anomaly detection, recommendation, or churn/LTV (gradient boosting, deep learning, graph-based models).
Technology Familiarity
Supervised learning, transfer leaning on machine learning as well as neural networks
Basic LLM knowledge, especially how to use it and where not to use it.
MLOps foundations: feature stores, experiment tracking, model registries (MLflow/W&B-class), continuous training pipelines.
Model serving and inference optimization (vLLM-class serving, quantization).
Nice-to-Have:
Publications, conference talks, or recognized open-source contributions to training/eval tooling .
Graph-based fraud detection (fraud rings, device/account linkage)..
Gaming, payments, fraud, advertising domain experience.
Hands-on, up-to-date experience with modern AI tools (e.g., Claude, Copilot, Cursor) for code generation, review, and accelerating day-to-day engineering work.
Benefits:
We are passionate about fostering a supportive environment for our team, so we prioritize the physical, mental, and emotional well-being of our employees and their families through a comprehensive Benefits Program. This includes 100% company-paid medical, dental, and vision plans, unlimited Flexible Time Off, and a personalized career roadmap for each US employee. By investing in professional development through training and educational opportunities, we ensure that our team thrives both personally and professionally. Together, we’re not just building a business; we’re cultivating a community that values creativity, collaboration, and the transformative power of play.
Equal Employment Opportunity Statement:
Xsolla is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, color, religion, sex, national origin, age, disability, sexual orientation, gender identity, or any other characteristic protected by law.
We consider qualified applicants with criminal histories in accordance with the Fair Chance Act.
Criminal History Consideration:
For the Data Scientist position, we will conduct a background check that may include the following:
Criminal history check
Employment verification
Education verification
Relevance to Job Responsibilities:
The background check is relevant to this position because of the following role responsibilities:
Accessing confidential company data
Ensuring compliance with regulatory requirements
Rights Under the Fair Chance Act:
Applicants are encouraged to inquire about their rights under the Fair Chance Act. If you have questions regarding our hiring practices, please contact careers@xsolla.com.
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