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Location: US / Remote Workplace: remote Why Us? CertiK is a pioneer in blockchain security, leveraging best-in-class AI technology to protect and monitor blockchain protocols and smart contracts. Founded in 2018 by professors from Yale University and Columbia University, CertiK’s mission is to secure the web3 world. CertiK applies cutting-edge innovations from academia to enterprise, enabling mission-critical applications to scale with safety and correctness. About the Role The primary responsibility of this role is for CertiK’s security-related services. Intersecting cybersecurity and blockchain, CertiK’s security offerings include security consulting, security reviews, security auditing of smart contracts and blockchains, verification of smart contracts, penetration testing, and more. We are looking to hire someone with a passion for application security and penetration testing. This is a fun and challenging full-time position. If you are excited about hacking, threat modeling, scanning, auditing, designing, and enhancing the security of applications across the board then you will thrive in this role. While you work with clients, we will also provide you with plenty of opportunities to get involved with research and development efforts to help us raise the standards of blockchain security. Responsibilities Perform security assessments on web, mobile, thick client applications, and browser extensions Conduct external and internal network penetration tests Perform security source code reviews Perform cloud security reviews Develop comprehensive pentest reports for both technical and non-technical audiences Research and develop innovative techniques, tools, and methodologies for pentesting applications in the blockchain space Contribute to the community by developing tools, presentations, and blog posts Requirements Passionate about cryptocurrency, DeFi, and blockchain, with a willingness to learn Web3 technologies such as smart contracts Minimum of 4 years of experience in application security and penetration testing Experienced in source code review for different languages, with a strong understanding of JavaScript and TypeScript Experienced in mobile application penetration testing Familiar with cloud platforms and their security risks, such as AWS, Azure, and GCP Experience in programming with scripting languages such as Python and Bash Solid understanding of cryptography BS/MS/PhD in Computer Science or Information Security Strong spoken and written communication skills Bonus Points Experienced in pentesting Web3 applications such as crypto exchanges, wallets, Dapps, and key custodian solutions Experienced in smart contract security audits Familiar with browser extension architecture and security risks Actively participate in the blockchain security community OSCP, OSWE, OSCE, GWAPT, or comparable certification Participated in bug bounty programs and audit contests Published security-related blog posts and spoken at security conferences and/or local meetups About the Company One of the fastest-growing and most trusted companies in blockchain security, CertiK is a true market leader. To date, CertiK has worked with over 3,200 Enterprise clients, secured over $310 billion worth of digital assets, and has detected over 60,000 vulnerabilities in blockchain code. Our clients include leading projects such as Aave, Polygon, Binance Smart Chain, Terra, Yearn, and Chiliz. Investors = Insight Partners, Sequoia, Tiger Global, Coatue Management, Lightspeed, Advent International, SoftBank, Hillhouse Capital, Goldman Sachs, Coinbase Ventures, Binance, Shunwei Capital, IDG Capital, Wing, Legend Star, Danhua Capital and other investors. Compensation Target annual base salary for this role performed in the US is $100,000 - $180,000. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates. #LI-Remote #blockchain #startups #hiring CertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full-time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.   In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.   CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.   CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements. https://www.eeoc.gov/sites/default/files/migrated_files/employers/poster_screen_reader_optimized.pdf   All CertiK employees are expected to actively support diversity on their teams, and in the Company.

Location: Lightning Labs Workplace: Remote In addition to the core Lightning Network Daemon software and end-user applications, the Lightning Network ecosystem includes supporting systems like watchtowers (a form of backup), peer availability/network monitoring, advanced liquidity provisioning tools, automated channel management, and other services. We’re looking for a systems-oriented engineer to design and build out the key components that will support the initial bootstrapping and growth of the network. These tools will lower the barrier to entry for operating routing nodes[1] and enable existing routing node operators to more effectively manage their infrastructure. An ideal candidate would have a strong passion for Bitcoin and a desire to make using Bitcoin cheap, fast, and simple for everyone. Roles: - Write advanced software tooling for automated channel management and initial client channel selection (autopilot) - Implement algorithms for ongoing capital management and optimization (fee maximization and capital efficiency) - Design and maintain a suite of monitoring and alert infrastructure for routing nodes - Develop and collect metrics to passively analyze of the health of the network based on graph and node level signals - Design and build novel systems designed to help nodes/users acquire and manage liquidity on the Lightning Network Skills: - Experience building and operating secure, scalable, highly-available systems - Experience developing and supporting publicly available APIs - Familiarity contributing to open source projects preferred - Experience in systems programming languages such as Go, C or C++ - Security and adversarially-oriented mindset - Knowledge of Bitcoin and applied cryptography; understanding of the Lightning Network protocol preferred Check out our Github repos at: https://github.com/lightningnetwork/lnd https://github.com/lightninglabs/pool https://github.com/lightninglabs/loop https://github.com/lightninglabs/neutrino https://github.com/lightninglabs/neutrino-https://github.com/lightninglabs/faraday https://github.com/lightninglabs/faraday-https://github.com/lightninglabs/lndmon https://github.com/lightninglabs/aperture [1] https://blog.lightning.engineering/posts/2018/05/30/routing.html

Location: Home based - Worldwide Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and silicon providers, and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1200+ colleagues in 75+ countries and very few office-based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution. The company is founder-led, profitable, and growing. This is an exciting opportunity for an exceptional software engineer passionate about open source software, Linux, and Web Services at scale. Come build a rewarding, meaningful career working with the best and brightest people in technology at Canonical, a growing international software company. Canonical's Store team develops and operates a large system of backend services that power the Snap Store and Charmhub.io marketplaces. Our services are built primarily in Python, with a bit of Golang. We have some exciting challenges ahead including continuing to scale our production architecture, significantly expanding the range of software we can deliver through the system powering our marketplaces, and enhancing our offering for the booming world of IoT and for large Enterprise solutions. If you have a passion for clean APIs, have a bias towards shipping, and believe that automated tests are the key to higher velocity and reliability, you'll fit right in. What you’ll do Collaborate remotely with a globally distributed team. Write clean web service APIs to support both CLI and web frontend clients, using Python (and optionally Golang). Design and implement new features and enhancements from spec to production and ongoing operations at scale. Review code and technical designs produced by other engineers. Discuss ideas and collaborate on finding good solutions. Work remotely with global travel for 2 to 4 weeks for internal and external events. Who you are You have demonstrated professional proficiency in developing public-facing APIs and web applications using Python. You have a broad technology base but favour backend code and infrastructure. You know your way around relational and non-relational databases and can effectively design data models that perform well, and tune queries to access them. You are comfortable with Ubuntu as a development and deployment platform. You have demonstrated strong academic performance in Computer Science, STEM or a similar degree. You love technology and working with a diverse set of talented people. You are curious, flexible, articulate, and accountable. You value soft skills and are passionate, enterprising, thoughtful, and self-motivated. About Canonical Canonical is a growing, international software company that works with the open-source community to deliver Ubuntu -- the world’s #1 cloud operating system. Our mission is to realise the potential of free software in the lives of individuals and organisations. Our services are helping businesses worldwide to reduce costs, improve efficiency and enhance security with Ubuntu.  Canonical is a unique tech company - global, remote-first, open source, with 700 professionals across 50 countries - we want to be the world’s best, not biggest, global software company. With almost every team remote by default, Canonical sets the pace on the 21st-century digital workplace. What Canonical offers: Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform for AI, IoT, and the cloud, we are changing the world of software. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence; in order to succeed, we need to be the best at what we do. Most colleagues at Canonical have worked from home since our inception in 2004.​ Working here is a step into the future and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical is an equal opportunity employer We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration. #LI-remote #stack

Location: Warsaw, PL Workplace: remote Hello! We’re currently searching for a friendly and skilled Brand&Design Strategist. Your role will be important in leading the creation of creative Brand&Design strategies that will not only help our studio grow but also make a lasting impact. If you’re passionate about making a difference and ready to take on this exciting opportunity, we’re eager to hear from you! Requirements You’ll need at least 3 years of experience as a brand/design strategist. Analytical & creative thinking. Previous experience in interacting with clients. Understanding of brand design (aesthetics, process and deliverables). Ability to work independently: you’ll have the skills to carry out projects from beginning to end on your own. You’ll know what to do even if no one tells you, and you’ll excel at taking initiative. Proficient in English Responsibilities Research: client workshop; client brand/identity analysis; competitor brand/identity analysis; other research skills (bonus, but not mandatory). Brand Strategy: Naming; Positioning; Architecture; Personality; Mission/Vision etc. Design strategy: Design Brief; Design concepts; Providing visual references. Management: Client communication; Presenting work; Managing your workload. Сollaborating with product design, illustration, and animation teams to ensure that strategy & branding are implemented consistently. What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Warsaw, PL Fireart Studio is on the lookout for a passionate and motivated Lead Generation Specialist ! What you’ll do Develop and execute lead generation strategies to acquire high-quality B2B leads in the software development space. Identify and research target markets, ideal customer profiles, and key decision-makers. Use various lead generation techniques, including email outreach, LinkedIn prospecting and paid campaigns. Manage and optimize lead generation tools (e.g., LinkedIn Sales Navigator, Apollo.io , HubSpot, etc.). Build and maintain prospect databases, ensuring accurate and up-to-date records. Qualify leads through initial outreach, ensuring a seamless handoff to the sales team. Analyze lead generation performance metrics and continuously optimize strategies to improve conversion rates. Collaborate with marketing to align lead generation activities with broader campaign efforts. Stay up to date with industry trends, competitor strategies, and emerging lead generation techniques. Must have 4+ years of experience in B2B lead generation, preferably in the IT services or software development industry. Proven track record of generating high-quality leads and meeting or exceeding KPIs. Strong knowledge of outbound sales techniques, prospecting tools, and CRM systems. Experience with LinkedIn outreach, email automation strategies. Excellent communication and interpersonal skills, with the ability to engage and persuade potential clients. Analytical mindset with experience in tracking and optimizing lead generation campaigns. Self-motivated, results-driven, and able to work independently as well as in a team. Familiarity with digital marketing strategies and their impact on lead generation is a plus. What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Warsaw, PL Workplace: remote We are looking for a talented Senior Product Designer to design and shape unique, user-centric software for customers across the globe. You are a great fit if… You have 5+ years of experience designing mobile and web applications. One of your main UI design instruments is Sketch/Figma. Prototyping is not a problem using Principle, After Effects, ProtoPie, SmartAnimate, or the like. You can show us not only UI designs png’s but also share with us a story about the design challenges you faced during your career and how you successfully or not accomplished them. And of course, the good spoken and written English (C1-C2 level). Expertise in interaction and motion design, including micro-moments and transitions. Why you should join us We are growing daily and expanding our client list, providing opportunities to develop skills and work on various projects. We avoid micromanagement and fully trust the professionalism of our hires. Our employees are always ready to assist and support you, ensuring you won’t face problems alone. Fireart boasts a friendly atmosphere with talented individuals, promising an interesting journey for your continuous professional development. We have 3 steps in the recruitment process 1 — Interview with the Recruitment Specialist 2 — Interview with the Head of Design 3 — Interview with Design Lead What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Warsaw, PL Workplace: remote We are looking for a Vue.js 2 Developer (SSR + EJS, Options API) to join a project — a modern platform for creators that combines content publishing, community building, and monetization within one ecosystem. Requirements Strong experience with Vue.js 2 and the Options API Good understanding of SSR (Server-Side Rendering) Experience with EJS or similar templating engines such as Blade (Laravel) or Twig (Symfony) Understanding of how Vue applications are initialized in SSR environments Experience working with separate Vue applications per page (without Vue Router inside one large SPA) Understanding of browser-side vs server-side rendering and data hydration approaches Experience passing server-side data into frontend applications (e.g. window.__DATA__) Experience working without Vuex/global stores Understanding of component communication through props and custom EventBus solutions Experience with SASS Familiarity with Bootstrap/Tailwind styling approaches Nice to Have Experience with API integrations Experience optimizing SSR applications Experience working on content or creator-focused platforms Interview Process HR Call Technical Interview Test Task (optional) Final Call with the Client What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Warsaw, PL Workplace: remote What you will do Working with international clients from the entire world (US+UK = 80%) Working within a project team, having Project Manager, Frontend developers, and Mobile developers as partners Creating a RESTful API backend from scratch (70%) Preparing a Postman collection to automatically test created API (20%) Performing Code Reviews for other projects and other backend developers (5%) Using digital tools to communicate with clients and within a team (Slack, Google Meet) Preparing proper logic flow in developed applications based on documentation, business requirements, and conversations with clients (5%) Must have 3+ years of commercial experience or 2+ years node.js experience Good knowledge on node.js Experience with building RESTful API with express server-Practical experience with Typescript Ability to create complicated logic flow based on business requirements Experience with Mongo/DynamoDB-Expert understanding ofsoftware design principles and patterns, and experience applying them High productivity and effective time management-Experience with Scrum/Agile SDLC Outstanding interpersonal and written communication skills Good spoken English Nice to have Experience with Docker, Kubernetes, etc. Experience with AWS/Azure/Firebase Knowledge ofMQ technologies (RabbitMQ, Kafka) and applicable protocols: MQTT, AMQP, etc. Experience with one orseveral multimedia communication protocols such asWebRTC, RTMP, RTSP, HLS, etc. Experience with other backend technologies What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Warsaw, PL Workplace: remote What you’ll do Working with international clients from entire world (US+UK = 80%) Working within a project team, having Project Manager, Backend developers and Frontend developers as partners Creating a beautiful mobile applications based on provided designs in Figma (90%) Performing Code Review for other projects and other mobile developers (10%) Using digital tools to communicate with client and within a team (Slack, Google Meet) What we expect 4+ years of commercial experience Expert knowledge of React Native Ability to develop native iOS/Android components to integrate with React Native and advanced platform capabilities Expert knowledge on HTML, CSS (including CSS preprocessors) Experience in consuming REST and GraphQL APIs Commercial experience with Typescript Commercial experience integrating Maps, Location, In-App purchase High productivity and effective time management Experience with Scrum/Agile SDLC Outstanding interpersonal and written communication skills Good spoken English What’s your advantage Commercial experience of React Native for Web Commercial experience with native mobile app development (Swift/Java/Kotlin) Experience with App Store application deployment Previous experience of building web application with React Good understanding of software design principles and patterns, and experience applying them 4+ years of commercial experience with React Native What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Warsaw, PL Workplace: remote What you’ll do Working with international clients from the entire world (US+UK = 80%) Working within a project team, having Project Manager, Frontend developers, and Mobile developers as partners Creating a RESTful API backend from scratch (70%) Preparing a Postman collection to automatically test created API (20%) Performing Code Review for other projects and other backend developers (5%) Using digital tools to communicate with clients and within a team (Slack, Google Meet) Preparing proper logic flow in developed applications based on documentation, business requirements, and conversations with clients (5%) Must have 5+ years of commercial experience, including 2+ years with node.js Expert knowledge on node.js Experience with building RESTful API with express server Practical experience with Typescript Ability to create a complicated logic flow based on business requirements Experience with Mongo/DynamoDB-Expert understanding of software design principles and patterns, and experience applying them High productivity and effective time management-Experience with Scrum/Agile SDLC Outstanding interpersonal and written communication skills Good spoken English Nice to have Experience with Docker, Kubernetes, etc. Experience with AWS/Azure/Firebase Knowledge of MQ technologies (RabbitMQ, Kafka) and applicable protocols: MQTT, AMQP, etc. Experience with one or several multimedia communication protocols such as WebRTC, RTMP, RTSP, HLS, etc. Experience with other backend technologies What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Warsaw, PL Workplace: remote You are a great fit if… Your inner leader can make an impact on our existing processes and perform under pressure. You are ok with working in a remote environment and take lead on multiple projects. You have experience working with product development teams (Design, Development). You know how to gather requirements from the client and translate it into epics and high-level user stories based on the client’s business requirements. You know how to communicate the vision to all cross-functional teams involved. You have experience conducting workshops with clients and the product team to plan future roadmap. Manage communications with product stakeholders You have an understanding of product lifecycle and how to work in an Agile / Waterfall / Hybrid environment. You know how to set up Jira Software and implement other PM tools that might be needed. Ensure timely delivery of products to customers with the highest standards of quality. Nice to have You are familiar with UX fundamentals. You have a technical background. We have 2 steps in the recruitment process 1 — Interview with the Recruitment Specialist 2 — Interview with the Head of Delivery What we offer Competitive compensation based on your experience and expertise Long-term contract-based collaboration A collaborative and open environment Flexible collaboration arrangements

Location: Home Based - Americas; Home based - EMEA Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and silicon providers, and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1200+ colleagues in 75+ countries and very few office-based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution. The company is founder-led, profitable, and growing. We are hiring a Project Manager - Ubuntu Embedded Systems at Canonical As a Project Manager for Canonical’s Devices business, this role is responsible for the coordination and completion of large complex customer-facing projects, overseeing all aspects of project delivery and acting as the primary delivery liaison between Canonical's engineering teams and Canonical's customers. You will be managing the projects that involve the delivery of Ubuntu images on a wide variety of devices ranging from robots, edge gateways, and IoT devices to PCs and automotive systems. This is a high-profile project management position where you are expected to build and maintain working relationships with team members, customers, other partners/vendors (Silicon vendors, OEMs, ODMs, IHVs), and other Canonical departments/teams. Location: This role will be based remotely in the AMERICAs and/or EMEA regions. The role entails Managing projects through their complete life cycle and ensuring that the overall goals for both Canonical and the client are met Successfully delivering engineering professional services for assigned projects Working with engineering teams on custom board enablement and delivery of Ubuntu images to the customers Assisting in the development of project statements of work Drafting and maintaining project-specific schedules/project plans Obtaining client agreement to the project schedule and agreed-upon work items Ensuring projects are delivered within the time/resources/scope expectations Managing project risk mitigation and plans Driving technical issues to reach desired delivery outcomes Maintain daily and weekly communication with the client and all internal stakeholders Managing delivery schedule of critical third-party deliverables for the project Keeping management informed of the status of assigned projects Identifying custom engineering requests that are not part of an existing business contract Advocating the appropriate technologies from Canonical's product portfolio to customers Supporting different time zones and work non-traditional hours as required to support the assigned projects What we are looking for in you Solid project management experience in delivering engineering services to customers managing software development teams and field engineers Extensive experience successfully managing projects with cross-cultural and multi-continent internal and external project resources, preferably with resources in Asia, Europe, and the Americas Educational degree preferably in Science, Technology, Engineering, or Math Good knowledge of Linux and the wider Open Source Software community, and understanding of computer architecture Excellent communications skills, both verbal and written, in English Strong leader and problem solver with extensive experience building successful internal and external partnerships and effective working relationships with demanding project sponsors in complex organizational environments PMP/PMI or PRINCE2 Practitioner Certification preferred Ability to work non-standard work hours in support of a worldwide sales and project team Willingness to travel up to 4 times a year for internal events What we offer colleagues We consider geographical location, experience, and performance in shaping compensation worldwide. We revisit compensation annually (and more often for graduates and associates) to ensure we recognize outstanding performance. In addition to base pay, we offer a performance-driven annual bonus or commission. We provide all team members with additional benefits which reflect our values and ideals. We balance our programs to meet local needs and ensure fairness globally. Distributed work environment with twice-yearly team sprints in person Personal learning and development budget of USD 2,000 per year Annual compensation review Recognition rewards Annual holiday leave Maternity and paternity leave Team Member Assistance Program & Wellness Platform Opportunity to travel to new locations to meet colleagues Priority Pass and travel upgrades for long-haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open-source projects and the platform for AI, IoT, and the cloud, we are changing the world of software. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence; in order to succeed, we need to be the best at what we do. Most colleagues at Canonical have worked from home since our inception in 2004.​ Working here is a step into the future and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical is an equal opportunity employer We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration. #LI-remote

Location: US / Remote Workplace: remote About the Role: We are seeking a Senior Blockchain Security Engineer with a strong security mindset and deep technical expertise across smart contracts, blockchain nodes, and decentralized infrastructure. You will play a critical role in safeguarding Web3 projects by auditing code, building security tools, and driving research. If you have hands-on experience in Web3 and are passionate about advancing the security of decentralized technologies, we’d love to hear from you. Responsibilities Audit and review codebases for smart contracts, blockchain protocols, and decentralized applications (dApps) to identify and remediate vulnerabilities. Work closely with external blockchain teams to enhance the security of their products by providing expert security consultation and implementing remediation strategies. Conduct independent security research, explore new attack vectors, and deliver actionable insights. Design, develop, and maintain internal security tools and frameworks to strengthen our security services. Continuously improve internal processes, methodologies, and service offerings while ensuring high client satisfaction and long-term partnerships. Requirements Bachelor’s, Master’s, or PhD in Mathematics, Computer Science, or Information Security. Minimum 3 years of professional experience as a Software Engineer, Security Engineer, or in a related role. At least 2 years of hands-on experience with blockchain technologies, including: Smart contracts (EVM chains, Solana, Move, etc.), Blockchain protocols (nodes, SDKs, Cosmos, etc.) Strong expertise in threat modeling, risk assessment, and security analysis. Proficiency in one or more programming languages: Rust, Go, Solidity, Python, etc. Passion for Cryptocurrency, DeFi, and Blockchain technologies. Preferred Qualifications Solid academic or practical background in Mathematics, Cryptography, or Cybersecurity. Demonstrated experience conducting audits and collaborating with leading Web3 protocols. Recognized achievements such as published CVEs, or strong placements in Attackathons, Bug Bounties, or Audit Contests. About the Company CertiK is the largest blockchain security auditor and provides a comprehensive suite of tools to secure the industry at scale. To date, CertiK has worked with over 4,900 Enterprise clients, secured over $557 billion worth of digital assets, and has detected over 18,000 vulnerabilities in blockchain code. Our clients include leading projects such as OKX, Tether, Ripple, and Pancakeswap. Our investors include top VCs like Tiger Global, Coatue Management, Shunwei Capital and Hillhouse Capital as well as industry leaders like Coinbase Ventures and Binance. Investors = Insight Partners, Sequoia, Tiger Global, Coatue Management, Lightspeed, Advent International, SoftBank, Hillhouse Capital, Goldman Sachs, Shunwei Capital, IDG Capital, Wing, Legend Star, Danhua Capital and other investors. About You You’re a self-starter. You believe in tackling the most important problems, even if they are the most difficult problems. You’re comfortable with the unknown and understand that startup life means that you’re going to be wearing multiple hats. And that’s what motivates you. You’re accountable and obsessed with improvement, both in yourself and in others. You’re up to the challenge of building a world-class company that aims to be the infrastructure for more secure software for all. Compensation Target annual salary for this role performed in the US is $102,000 - $180,000. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates. CertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full-time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.   In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.   CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.   CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements. https://www.eeoc.gov/sites/default/files/migrated_files/employers/poster_screen_reader_optimized.pdf   All CertiK employees are expected to actively support diversity on their teams, and in the Company.

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! Who we're looking for: a Frontend Developer to join our video player team. What you’ll be working with: Our codebase is primarily written in vanilla JavaScript, with some occasional work in Svelte. Previous experience with Svelte isn’t required—it’s a lightweight framework that’s easy to pick up. There’s also some legacy PHP code you may need to work with from time to time, although we’re gradually phasing it out. What we expect from you: 10+ years of professional software development experience; Strong command of vanilla JavaScript (ES2015+), a solid understanding of how the language works, and experience conducting code reviews; A good understanding of client-side and server-side rendering; Hands-on experience with at least one popular UI framework, such as React, Vue, or Svelte; Good knowledge of TypeScript 4+; A solid understanding of object-oriented programming; A willingness to dig into the code and understand how things work, even when using AI-powered tools; The ability to work independently and take ownership of your work. Nice to have: Experience with video-on-demand technologies, HTML5 video, or HLS.js; A general understanding of backend development, particularly PHP and Node.js; Experience with CSS preprocessors such as LESS or SCSS, as well as the BEM methodology; Experience writing tests with Jest and Testing Library; A solid understanding of asynchronous programming and multithreading; Good judgment and an eye for quality :) What we offer: No bureaucracy and flexible working conditions. Extended benefits package, including private medical insurance, tax support, language courses, professional education, and all necessary hardware. Relocation support: coverage of travel expenses for you and your family, visa assistance, and the first month of accommodation. A friendly, international team that values professionalism and open collaboration. Work format: Remote 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: Barcelona, Spain; Athens, Greece; Romania; Germany; France; United Kingdom; Ireland; Italy Workplace: remote About Welocalize  Welocalize, a Welo Global brand, serves localization teams through AI-enabled multilingual content solutions that enable enterprises to operate and scale globally. Welocalize combines AI, automation, and human expertise to support enterprises in more than 300 languages, enabling accurate, culturally aligned, and compliant multilingual content at scale.   Welocalize’s Opal Platform comprises patented technology designed to automate multilingual content and improve workflow performance for enterprises. Opal functions as an agentic system that orchestrates AI, automation, and human expertise to coordinate content workflows across the lifecycle, improving speed, scalability, and operational control for global enterprises. These solutions operate within a secure and compliant environment supported by seven ISO certifications. Welocalize is headquartered in New York with offices worldwide. welocalize.com  Overview The German Translator role focuses on delivering high-quality translations across various content types using standard CAT tools and adhering strictly to client-specific guidelines and processes. It involves continuous quality improvement through feedback, training, and collaboration, while meeting key performance indicators in productivity, quality, and timeliness.   Job Responsibilities The following is a non-exhaustive list of responsibilities and areas of ownership for this role: Perform translations in various translation tools for assigned clients and projects Translate various types of content, e.g. marketing, help, UI, or regulated content Support the team with copy-edit tasks on selected content types Master the standard CAT tools and tools associated with translation work for internal clients (e.g.  tools for creating queries or checking the live UI elements) Precisely follow the established translation process, e.g. always raise queries when there is a need to Precisely follow the style guide and overall client requirements Improve based on the corrections made by senior team members as well as the client reviewers Keep track of personal error statistics and work on the weak spots Take part in the internal trainings and the ones organized by the clients Participate in the error arbitration process Meet the KPIs in terms of productivity, on time delivery and quality Take part in the internal quality meetings and the quality calls organized by the client for the whole team Constantly analyze own gaps and think of what assistance the senior members can provide to help address those Meet the goals set by the team manager   Experience and Skills Native-level fluency in German language Fluency in English, both written and spoken 2-4 years of experience in translation/localization/editing or content writing Good understanding of the localization process Good user experience of standard software, such as Windows and Office applications Good user experience of standard CAT tools, e.g. XTM, SDL Studio and issue tracking and query management tools, e.g. JIRA Ability to learn new localization tools and applications quickly Excellent interpersonal, written and verbal communication skills Ability to work with tight deadlines Ability to effectively present information and respond to questions from groups of managers, clients, customers, linguists Ability to solve practical problems and deal with a variety of concrete variables in Ability to work within a virtual team Fast learner, motivated, versatile Education Level  University degree in Translation/Applied Languages/Linguistic Studies or equivalent combination of education and experience (University degree in other fields plus 2 years of full time experience in translation; OR 5 years of full time professional experience in translating) Job Reference: #LI-JC1

Location: Tokyo, Japan Workplace: unspecified Benefits of working with Welocalize: ·     Transparent processes and professional vendor communication ·     Opportunity to interpret for clients from various industries: medical, finance, legal, high-tech and more   We are seeking freelance interpreters with a native ability in Japanese and Korean to provide interpreting services in Tokyo, Japan for one of our well-established clients in the computer technology industry.   Requirements: ·        Onsite in Tokyo, Japan ·        Native-level fluency in the respective language ·        Fluency in English ·        Minimum 5 years of interpretation experience ·        Strong business ethics  ·        Great interpersonal and communication skills ·        Previous work with clients such as HP, Microsoft, Intel, and Dell   Required interpretation experience in Software:  Topics such as ·        Protection of data ·        Virtualization ·        IoT ·        Cloud solutions ·        Digital transformation ·        Other IT related subjects are a plus   Please apply with your updated CV highlighting relevant interpretation experience.

Location: United States Workplace: remote Welocalize is currently recruiting English-US into Cherokee freelance linguists for a marketing translation project for one of our top clients.   The project entails translation and post-editing for a thrilling global company, and will suit someone who has experience and interest in IT, software, marketing and social media. We will create teams of translators who will be responsible for one or more products, always reviewing each other.   We receive work every day and the deadlines are usually short – within 24-48 hours, because the jobs are usually small. Ideally, we need people who have regular availability - the more, the better.   You will receive training and follow ups on your jobs initially by one of our more experienced resources, to ensure client expectations are being met. REQUIREMENTS: Native level fluency in Cherokee language When you join Welocalize, you have the opportunity to bring your career to the next level: ... receive steady volume of work and long-term partnership {where this applies}  ... professional development: work on exciting projects that will empower you keep learning and growing ... work with multicultural, international team with a great variety of documents and content types   ... 24-hour 6-day a week support from our Community team. If this opportunity sounds appealing to you, apply below.