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Location: Remote - Worldwide About us OpenZeppelin is the security standard onchain finance is built on. Founded in 2015, our mission is to accelerate the world's transition to an open financial system, built on open standards and secured by rigorous research. Our open-source Contract Libraries have facilitated over $35 trillion in onchain value and are used by 10 of the top 10 tokenized money market funds and 9 of the top 10 stablecoins by market cap. We combine AI-native security tooling with deep research and a decade of audit expertise to support leading institutions and crypto-native teams shaping the next generation of digital assets like DTCC, Fidelity, Coinbase, Uniswap, Aave, the Ethereum Foundation, and many more across the full secure development lifecycle. Please note: Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information. The Security Services Team OpenZeppelin's Security Services team is responsible for the security of the world's leading web3 protocols and top financial institutions building onchain. Our researchers partner with client teams across the full lifecycle of a protocol: working on architecture and design before any code is written, co-creating novel mechanisms and primitives with engineering teams, conducting deep audits of pre-launch codebases, and providing continuous coverage as production systems evolve. Our clients range from emerging projects shipping their first contracts to global financial institutions running production onchain systems at scale. What you'll be doing Review smart contracts for top decentralized applications, blockchain infrastructure and financial institutions before they launch. Find vulnerabilities, prioritize them, and present findings to the client. Drive audits independently from start to finish, with AI as your primary collaborator. When useful, partner with another researcher to attack the code together and pressure-test findings. Partner with client teams during the design phase of new protocols, analyzing architecture, trust assumptions, and operational constraints before any code is written (Design Reviews, Applied Research engagements). Use AI efficiently throughout the audit process, and build skills, agents, and workflows that compound across the team. Conduct open-ended research into cutting-edge blockchain technologies, vulnerability classes, and emerging attack vectors, and contribute findings back to OpenZeppelin's internal knowledge base and to the broader ecosystem. You have Hands-on and practical experience in one or more of the following: software development, cybersecurity, applied mathematics, distributed systems, cryptography, cryptoeconomics or game theory, or DeFi mechanisms. Experience designing and developing smart contracts, not only auditing them. Strong working knowledge of Solidity and the broader Ethereum / EVM ecosystem (common libraries, frameworks, smart contract patterns). Modern AI tooling is central to how you work, not a novelty. You use it daily to expand audit coverage, reason about complex systems, and produce high-quality outputs faster. You evaluate AI-generated code with a critical eye. Comfort building and extending your own tooling (skills, agents, prompts, scripts, or full workflows) that the rest of the team can adopt and build on. An advanced English level and strong communication skills (oral and written). Nice to have Experience with non-EVM ecosystems and languages, such as Canton, Move (Sui, Aptos), Golang (Cosmos SDK), Cairo (Starknet), Rust-based blockchains (Solana, Stellar), or ZK circuits and cryptography-heavy systems. Experience with risk assessment work in the crypto industry (smart contract risk assessment, threat modeling). Working hand-in-hand with protocol teams on co-creative engagements, helping design, specify, and implement smart contracts alongside the research. Web2 security expertise (penetration testing, web application security, infrastructure security, or appsec). Experience with formal verification, invariant testing, or advanced fuzzing tools (Echidna, Foundry, Halmos, Certora). A track record in audit contests (Code4rena, Sherlock, Cantina) or bug bounty platforms (Immunefi, HackerOne). Public security research output, such as published findings, blog posts, conference talks, or contributions to open-source security tooling. Logistics Our interview process takes place on Google Meet and tends to consist of the following stages: Recruiter call (30 minutes) Manager interview (60 minutes) Technical interview (60 minutes) Paid work trial (paid code review assessment) Reference checks Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance. Benefits Meet your teammates at company gatherings around the world 😎 Enjoy the flexibility of fully remote work 🌎 Take the time you need with flexible time off 🏝 Grow your family with 8 weeks of paid leave for primary caregivers, 4 weeks for secondary caregivers, and a one-time $3,600 baby bonus 💙 Build your ideal home office with up to $500 in equipment support 🪑 Stay covered with medical insurance 🏥 Keep growing with learning and development opportunities 🧠 Get a monthly stipend for your preferred co-working space 💻 At OpenZeppelin , we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us! Use of AI as part of the recruiting process As part of OpenZeppelin’s recruitment process, we may use automated tools, including artificial intelligence, to assist in reviewing applications and assessing candidate qualifications. These tools are used to support our People team by identifying relevant skills and experience, and are not used to make decisions solely by automated means. All hiring decisions involve human review. Any personal data provided as part of your application will be processed in accordance with OpenZeppelin’s Data Privacy Notice . If you have questions about this recruitment process or would like to request human review of your application, please contact us at talent@openzeppelin.com.

Location: Limassol Wisebits — is an international IT holding with a strong technical team! Our key product is a high-load video hosting platform used by millions of people worldwide every day. With over 15 years on the market, we’ve built a professional team that values engagement and initiative. If you’re excited about working with a high-load product and want to have an impact on its development, join us! We are looking for an experienced Data Analyst who will help us make key product and business decisions based on data. In this role, you will have the freedom to influence metrics, experiments, and the development of the company’s analytics culture. What you'll be working on: Defining and developing key product metrics. Generating data-driven insights to support product and business decisions. Designing, launching, and analyzing A/B tests, from hypothesis formulation to final results. Monitoring key metrics and identifying anomalies or trends. Writing SQL and Python code to extract, transform, and analyze data. Participating in the implementation of new tracking events and parameters. Working closely with product managers, analysts, designers, data scientists, and data engineers. What we expect from you: 5+ years of experience in analytics. Deep understanding of A/B experiments and statistics. Strong knowledge of Python and SQL. Experience working with ClickHouse and large volumes of data. Ability to translate business questions into metrics and reports. Experience with Google Analytics, Amplitude, or similar tools. Experience with Airflow, preferably together with dbt. Nice to have: Experience implementing data governance practices. Experience using ML approaches in analytics. Experience managing teams, such as data engineers, data scientists, or product analysts. What we offer: No bureaucracy — flexible working conditions. An extended benefits package, including medical insurance, tax coverage, foreign language courses, professional training, and all necessary work equipment. Relocation support: we cover relocation expenses for you and your family, including tickets, visa support, and the first month of accommodation. A friendly international team that values professionalism and collaboration. Here, you won’t just analyze numbers — you’ll have a real impact on the product and the business. Salary: From €4,000 net per month. The final compensation level may be higher and depends on relevant experience, skills, and overall match with the role requirements.

Location: Limassol Wisebits — is an international IT holding with a strong technical team! Our key product is a high-load video hosting platform used by millions of people worldwide every day. With over 15 years on the market, we’ve built a professional team that values engagement and initiative. If you’re excited about working with a high-load product and want to have an impact on its development, join us! Who we're looking for: Product Manager with strong product expertise. What you'll be working on: Gathering and analyzing business requirements in close collaboration with stakeholders; Turning ideas into detailed, well-structured product concepts; Managing the full product development lifecycle, from preparing documentation to analyzing product metrics; Designing product interfaces in collaboration with a designer; Analyzing the KPIs and metrics that determine the success of the product and newly launched features; Running A/B tests, validating hypotheses, and optimizing the product to improve conversion rates. What we expect from you: At least 5 years of experience as a Product Manager; Proven experience successfully launching web products; Experience documenting and structuring requirements; Experience working with analytics tools, including Google Analytics, and a solid understanding of metric hierarchies; Experience conducting A/B tests, from developing hypotheses to analyzing results and making product decisions; Basic knowledge and practical experience in the following areas: software development, management, operations, product design, and business analysis. What we offer: No bureaucracy — flexible working conditions. Comprehensive benefits package, including health insurance, tax coverage, language courses, professional development, and all necessary work equipment. Relocation support: we cover the moving expenses for you and your family, including airfare, visa assistance, and your first month's rent. A friendly, international team that values professionalism and collaboration. Work format: Remote Salary: from €4000 net per month. The final compensation level may be higher and depends on relevant experience, skills, and overall match with the role requirements.

Location: Limassol Wisebits — is an international IT holding with a strong technical team! Our key product is a high-load video hosting platform used by millions of people worldwide every day. With over 15 years on the market, we’ve built a professional team that values engagement and initiative. If you’re excited about working with a high-load product and want to have an impact on its development, join us! Who we're looking for: a Product Designer UX/UI to help us design and improve web interfaces for both mobile and desktop users. What you'll be working on: Designing interfaces for web products, including mobile and desktop versions. Improving existing designs based on research, experiments, and team feedback. Turning complex tasks into simple solutions, as well as generating and testing hypotheses. Using design solutions to improve key metrics across different parts of the product. You’re a great fit if you can: Work closely with other designers, product managers, analysts, and developers — from concept to launch. Present and clearly explain your design decisions. Find reasonable compromises with developers to speed up feature delivery. Control the quality of interface implementation by developers. What we expect from you: A portfolio with product design cases — we carefully review it before the interview. Knowledge of Figma, Sketch, Photoshop, and Illustrator. 3+ years of experience as a Product Designer. What we offer: No bureaucracy — flexible working conditions. Comprehensive benefits package, including health insurance, tax coverage, language courses, professional development, and all necessary work equipment. Relocation support: we cover the moving expenses for you and your family, including airfare, visa assistance, and your first month's rent. A friendly, international team that values professionalism and collaboration. Please include a link to your portfolio in your cover letter. Work format: Remote Salary: From €4,000 net per month. The final compensation level may be higher and depends on relevant experience, skills, and overall match with the role requirements.

Location: Limassol Wisebits — is an international IT holding with a strong technical team! Our key product is a high-load video hosting platform used by millions of people worldwide every day. With over 15 years on the market, we’ve built a professional team that values engagement and initiative. If you’re excited about working with a high-load product and want to have an impact on its development, join us! We’re looking for a Project Manager to join one of our affiliate products and help develop advertising tools, launch new solutions and improve development processes. What you'll be working on: Manage projects involving new ad formats, landing pages, tracking systems and technical integrations — from gathering requirements to production release. Translate business needs into clear technical requirements for developers and analysts. Coordinate product experiments and A/B tests: align analytics and tracking requirements, oversee implementation, and ensure results are collected. Manage the team’s backlog in YouTrack: plan tasks, track deadlines, and manage priorities. Coordinate the work of the developer, analyst and cross-functional teams, track dependencies and remove blockers. Keep documentation up to date and improve development processes within the team. What we expect from you: At least 4 years of experience as a Project Manager managing technical IT projects. Experience independently managing projects from initial scope definition to production release. Experience maintaining project documentation and writing functional and non-functional requirements. An understanding of software development processes, APIs, and technical integrations. Strong backlog, priority, timeline, and dependency management skills. Experience with YouTrack, Jira or similar tools. A proactive, structured approach and the ability to organise the team’s work without constant supervision. Nice to have: Experience with advertising technologies, AdTech or marketing tools. Familiarity with tracking and analytics platforms such as Affise and Binom. English proficiency at B1 level or above. What we offer: No bureaucracy — flexible working conditions. An extended benefits package, including medical insurance, tax coverage, foreign language courses, professional training and all necessary work equipment. Relocation support: we cover relocation expenses for you and your family, including tickets, visa support and the first month of accommodation. A friendly international team that values professionalism and collaboration. Work format: Remote / On-site Salary: from €2500 net per month. The final compensation level may be higher and depends on relevant experience, skills, and alignment with the role requirements.

Location: Limassol Wisebits is an international IT holding company with a strong technical team. Our key product is a high-load video hosting platform used daily by millions of people around the world. Over more than 15 years in the market, we have built a professional team where engagement and initiative are truly valued.  If you want to work with a high-load product and have the opportunity to influence its development, join us! We are looking for an AI Automation Engineer who will develop and implement applied AI solutions to automate the company’s internal processes. The main goal of this role is to identify routine, time-consuming, or poorly scalable processes across different teams and turn them into reliable AI tools and services. Responsibilities Develop AI tools for automating code review and analyzing code changes. Build systems for automatically analyzing product and technical metrics, logs, and events, including anomaly detection. Integrate Slack, task trackers, knowledge bases, and the company’s internal services. Develop AI agents, for example, for creating tasks from Slack threads, searching for similar bugs, and preparing concise summaries. Automate incident analysis, identify possible root causes of failures, and prepare draft post-mortems. Create tools for automated checks of websites, domains, and SEO metrics. Design and develop custom MCP servers, RAG systems, and pipelines for working with corporate data. Evaluate the quality of AI solutions, reduce error rates, and control the cost and speed of their operation. Work with both cloud-based models and local LLMs. Requirements Practical experience in developing solutions using AI/ML. Experience working with APIs of cloud AI platforms, such as OpenAI and Anthropic. Experience launching, additional training, and fine-tuning local models. Good understanding of how LLMs, Transformer models, embeddings, and vector search work. Experience developing custom solutions based on MCP and RAG. Experience integrating AI services with external APIs, databases, and corporate systems. Strong development skills in Python, TypeScript, Go, or other backend or systems programming languages will be an advantage. Understanding of different neural network architectures, including Transformers, NLP models, RNNs, and others. Experience with Docker, Linux, Git, and basic CI/CD processes. Ability to turn an informal business need into a working technical prototype and then into a stable production service. Nice to have Experience with LangGraph, LlamaIndex, Haystack, Semantic Kernel, or similar frameworks. Knowledge of PyTorch, Hugging Face Transformers, PEFT, LoRA, or QLoRA. Experience with local inference using vLLM, Ollama, llama.cpp, TGI, or similar solutions. Experience with vector databases and search systems: PostgreSQL/pgvector, Qdrant, Milvus, Weaviate, Elasticsearch, or OpenSearch. Skills in building LLM quality evaluation systems: evaluation datasets, automated tests, human feedback, hallucination monitoring, and regression testing. Understanding of information security, access control, and confidential data protection when working with AI. Experience processing logs, metrics, and time series data, as well as detecting anomalies. Experience developing AI agents and systems using tool calling. Understanding of observability. Experience with Kubernetes and cloud platforms. We are not looking for an academic researcher, but rather a strong hands-on engineer who can quickly understand new AI technologies, build prototypes, validate their value, and bring successful solutions to production. What we offer Work on an ML product with millions of users and real-life metrics. A compact team where every engineer can influence the product and develop expertise across several areas. Experienced colleagues to discuss ideas with, think together, and launch new projects and features. A simple structure with minimal bureaucracy and maximum responsibility. Annual salary review and bonuses. Benefits: medical insurance, tax compensation, learning opportunities, equipment, and language courses. Relocation to Cyprus: visa support, relocation coverage, flight tickets, and the first month of accommodation. Flexible schedule, a comfortable atmosphere, and team support. Work format: Remote / On-site Salary: from €3,500 net per month . The final compensation level may be higher and depends on relevant experience, skills, and overall match with the role requirements.

Location: Global Remote Workplace: remote Metabase is the easiest way for people to get insights from their data, from tiny startups who get up and running quickly to major corporations with tens of thousands of users. That's why people love us.   We bring data tools with the elegance and simplicity of consumer products to the crufty world of enterprise business intelligence. We provide an opinionated open source starting point for how companies should measure, analyze and share their data, which is used by tens of thousands of companies. Tens of thousands of companies use Metabase every day to answer questions about their data. While we seek to become the de-facto self-managed open source analytics software for organizations everywhere, many customers want an ability to use Metabase without worrying about the operational details of self-hosting. That’s why we recently launched our Metabase Cloud product. We’re looking for operations engineers to help build out and run our new and quickly growing ‘Metabase Cloud’ hosted product. You will: Own and operate our application stack and AWS infrastructure to orchestrate and manage our hosted customer instances of Metabase Debug runtime issues across the different levels of our application stack and hosting stack. Develop and build our internal tooling and automation to manage the lifecycle of a hosted Metabase installation, from purchase to deployment, zero-downtime upgrades, and general operational health Continuously improve our automated deployments and testing We're looking for someone who: Is thoughtful and careful Compulsively automates everything and documents it Is able to make solid technical judgements and back them up articulately Has at least 5 years of experience building and operating production infrastructure, ideally on public cloud Strong Kubernetes and AWS experience Strong experience with IaC and Terraform Can write high quality and readable code in a modern language (e.g. Python, Go, etc.) Experience with modern monitoring stacks (e.g Prometheus/Grafana/Datadog) Projects you could work on: Multi-region hosting Automate EKS cluster provisioning Extend our CRDs and Operators Improve the RDS sharding strategy for our multi-tenant platform Unify and improve our CI/CD platforms Collaborate with core application developers on changes to improve our application metrics, deployment speeds and CI integration. Maintain our SOC2 compliance and security posture Compensation The US base salary range for this role is $97K–$200K annually, plus equity and benefits. Compensation is determined by role, level, location, and individual qualifications, including skills, experience, and scope of responsibility. Pay may vary by geographic location and other job-related factors. Benefits We offer meaningful equity and a comprehensive US benefits package, including fully employer-covered medical, dental, and vision insurance (with 75% coverage for dependents), a 401(k) with employer match available to enroll after the first 30 days, flexible and unlimited paid time off including sick time, and an asynchronous, remote-first environment. We're a global team (50% outside the US), fully distributed (from Thailand to California), who get things done asynchronously, with plenty of uninterrupted time, supporting each other to do the best work of our careers. We offer flexibility (define your own schedule and work from wherever you want), autonomy, and an environment that fosters growth, learning, and development. We're relentlessly user-focused and believe in building long-term value, not short-term hacks. And we raised a $30M Series B to take our approach to the next level for years to come.   For U.S. applicants: Metabase participates in the federal E-Verify program, which confirms employment authorization of newly hired U.S. based employees. E-Verify is not used as a tool to pre-screen candidates and is only initiated upon hire.   E-Verify Participation Notice (English/Spanish) Right to Work Notice (English/Spanish)