Ethereum jobs in crypto and blockchain companies

P2P.org is the largest staking and restaking operator, with a TVL of over $8B 🔝.We are constantly focused on launching new yield products: for example, in Polkadot (adding +15-20% to APR) and Ethereum, where we offer significantly higher APR (+40%) than any other staking operator 💪We also keep an eye on exciting projects and launch new networks such as TON, Avail, Monad, and Babylon. We strongly believe in Bitcoin and the DeFi ecosystem around it, and we have a dedicated team focused on finding the best yield solutions based on Bitcoin.We work with partners like BitGo, Crypto.com, Ledger and ByBit.We are actively expanding our product line, exploring RWA, data, yield, and service products for exchanges, custodians, and banksP2P.org unites talented individuals globally ❤️Despite our distributed team, we share a passion for decentralized finance - a fairer system for all. We code, learn, create, and connect to shape finance's future 💰P2P.org boasts a strong reputation and network. We prioritize customer satisfaction and, as tech enthusiasts, develop innovative solutions that bolster our brand.Who we are searching for 🔍We are seeking a legal rockstar to join our team, armed with a law degree and a minimum of 6 years of experience 💪 You'll need to be a tech-savvy, crypto-loving, and business-savvy pro who's worked in dynamic startups or international companies 😎 You'll take charge of various legal tasks, provide strategic insights, and help streamline our legal operations.You will 🎯• Manage legal operations, including oversight of external counsel and documentation development• Conduct legal research and regulatory analysis• Implement and maintain internal compliance procedures• Handle legal matters independently and develop strategies for emerging and unregulated fields• Foster collaboration with internal and external stakeholders• Apply deep knowledge of emerging technologies, securities regulations, and associated risks• Conduct legal reviews and risk-opportunity assessments• Create and execute legal strategies to support growth while mitigating risks• Provide legal guidance on tech startup matters, including intellectual property and employment law• Research and analyze laws, practices, and regulations across US, EU, and other jurisdictions to inform strategic decisions• Oversee daily legal operations, including contracts, compliance, and corporate structuring• Lead negotiations for partnerships, investments, grants, and commercial agreements• Manage corporate documentation throughout its lifecycle—from planning to implementation• Develop and optimize legal operations processes• Collaborate with the team to improve legal operational efficiencyYou have 🧩Legal degree required (Bachelor’s or Master’s)Business education advantage - focus on international business law, English common lawAdditional plus: Securities, investment law, and GDPR knowledgeSenior level experience in IT/IP/crypto/legal and fintech 6 years at leastMust come from venture-backed startups or fast-growing international companiesUnderstanding of blockchain mechanicsFluent English6+ years of post-qualification experienceNice to Have 💡Active social media presenceConference participation experienceAt P2P.org we have a team of experts with their own unique approach and ownership culture. Together we gain experience and make dreams come true! 🌟Competitive salary level in $ (we can also pay in Crypto)Well-being programMental Health care programCompensation for education, including Foreign Language & professional growth coursesEquipment & co-working reimbursement programOverseas conferences, community immersionPositive and friendly communication cultureP2P.org is an equal opportunity employer. All applicants will be considered for employment without regard to race, color, national origin, religion, sex, sexual orientation, gender identity, veteran status, or disability.

TL;DR: Agora.xyz is seeking a highly organized, customer-oriented CX Operations Generalist to drive our customer deployment and support experience. You'll work closely with our Head of CX, product/eng/design, and founder-led sales team to ensure our clients—from industry-leading DAOs to emerging projects—receive seamless and timely solutions. This role is remote and best suited for someone who thrives in a fast-paced startup, excels in project management, and is excited to help shape the future of decentralized governance.   Also, here's a 2-minute video from the hiring manager.   About Agora Agora is reimagining governance for DAOs, helping the world’s leading decentralized organizations like Optimism, ENS, and Uniswap run smoothly and make impactful decisions at scale. We provide governance tools and a platform that enable DAOs to streamline operations, propose and fund initiatives, and engage as a community. But that’s not where we stop. Our goal is to build deep collaboration tools for people who couldn’t care less about crypto so that one day (soon), your friends back home are using Agora without ever knowing we’re on Ethereum. We’re building something that the best in crypto know is valuable, and financially, Agora is as healthy as early-stage startups get. We’re not profitable because we’re continuing to grow and reinvest in the company, but we have strong revenue and have raised funding from the world’s best crypto investors. This is all enabled by our talented team of ~15+ from all across the world. Our founders (Charlie, Yitong, and Kent) have collectively co-founded a Canadian unicorn (Charlie); designed essential products at Coinbase (Yitong); and led tech, growth, marketing, product, at several of Canada’s top startups (Kent). Yitong is a prominent voice in the crypto community, having contributed to numerous crypto initiatives over several years.   About the Role The Customer Experience (CX) Operations Generalist will be responsible for overseeing the customer journey after the sale, enabling our customers to implement our platform as smoothly as possible, and ensuring that customers have an exceptional experience with Agora’s governance solutions. This role combines project management, process optimization, customer support, and influencing our product roadmap to achieve smooth launches and the best possible governance for our customers’ communities. You will work closely with our Head of CX, product, eng, and design, and act as the operational backbone for all things implementation & customer success, driving best practices and improving our overall CX operations.   What you'll be doing: Project Manage Deployments: Oversee the customer onboarding and deployment processes, coordinating between customers and internal teams to ensure timelines are met and issues are swiftly resolved. Creating and Executing Customer Success Strategies: Work together with the Head of CX to create strategies to set each customer up for success, and then executing against these strategies. Customer Communication: Serve as the main point of contact for customers, managing inquiries, clarifying complex topics, and ensuring consistent, high-quality communication. Develop & Refine SOPs: Design and improve standard operating procedures for onboarding, deployments, and customer success as the 2nd person on the CX team. Maintain Documentation: Own and update client-facing resources and documentation, including our onboarding guides and knowledge wiki to ensure customers have access to helpful, self-serve resources. Influence the product roadmap & collaborate cross-functionally: Work with product, engineering, design, sales, and marketing to gather feedback, address issues, and deliver improvements based on customer input. Design, Analyze, & Report on Metrics: Track metrics like onboarding time-to-value, customer success metrics like customer satisfaction and delegate engagement, and own deployment timelines, using insights to suggest and implement improvements. Meeting Customers: Approximately quarterly at major conferences like DevCon, ETHDenver, Token2049   What we're looking for: You are high integrity and are comfortable handling privileged information. You are organized and have a knack for keeping projects on track, and are comfortable managing multiple client engagements at once. You are able to communicate complex ideas clearly and effectively, both to customers and internal teams. You genuinely enjoy helping customers succeed and go the extra mile to make their experience great. You have an eye for efficiency and continuously seek ways to improve processes. (And as the 2nd person on the CX team, you’ll have the opportunity to influence everything that we do.) You combine metrics, customer feedback, and your own intuition to inform decisions and improve customer outcomes. You are tech savvy. Experience with web3, blockchain, crypto, or DAOs is a huge plus; at a minimum, you should be quick to adapt to new technologies and digital tools. You are smart and can grok technical concepts quicker than most. You have enough life/career experience to project confidence when speaking with influential stakeholders.   Why you might be excited about Agora & this role: You’ll be in the room with stakeholders of multi-billion dollar protocols—the most impactful people in web3. Agora stands at the forefront of web3 governance. We're at the bleeding edge and we aim to level up governance across the entire industry. We are high performers who operate with a lot of trust and autonomy. The team is ex-Coinbase, Kraken, OpenZeppelin, Ethereum Foundation, BCG, IDEO. Our engineers like andreitr.eth and frog live & breathe web3. Our co-founder Yitong is a significant contributor to the web3 community.   Why you might not be excited about us: We’re still a fairly young company (founded Oct 2022), so if you like more established companies, this role isn’t for you. Projects and priorities may shift; being comfortable operating with some ambiguity is important. Everyone on the team is extremely driven and works incredibly hard to push towards our lofty ambitions. Agora is an unabashedly pro-startup, pro-crypto organization. If that’s not your thing, this isn’t the place for you.   Additional details Please note this role is only open to candidates that are legally authorized to work where they reside. Due to the remote nature of the role, Agora does not currently sponsor candidates for visas or work authorizations/permits and does not currently support the transfer of visas or work authorizations/permits from prior employers to Agora.   Compensation This role comes with a competitive salary, stock options, you can take any PTO you need, anytime you need, and employee benefits including healthcare.   Location Agora is a remote, distributed team. This role is totally remote but will require occasional travel for IRL meetings and events. (We typically meet as a team at least 2x a year for ~3-5 days, and this role will also attend conferences (~3/yr) to meet with customers. The right candidate should be excited about this!) We are excited about candidates globally; however, please note that our team works during U.S. friendly working hours.   Equal Opportunity Employer Agora is an equal opportunity employer dedicated to building an inclusive and diverse workforce. All employment is decided on the basis of qualifications, merit, and business need. We strongly encourage applications who are members of underrepresented communities to apply. #LI-Remote

About UsThe Starknet Foundation supports the development of Starknet, a state-of-the-art layer 2 blockchain network built on top of Ethereum. Our mission is to unlock Ethereum’s scalability and efficiency, making decentralized applications more accessible and effective.You’ll be at the forefront of one of the most innovative movements in blockchain technology. By joining us as part of this close knit team of tech visionaries, you’ll play a key role in empowering creators and developers to build transformative technologies that can reach millions of people. It’s a chance to be part of something truly impactful—helping unlock web3's full potential and pushing the boundaries of what’s possible in this new tech frontier.The RoleWe are seeking an experienced leader to own global events for the Foundation. As the Head of Events, you will lead the strategic design and execution of world-class events that reflect the Foundation's vision and elevate our global presence. This is a senior leadership role requiring strategic thinking, operational excellence, and the ability to scale high-impact experiences.Reporting into our Head of Marketing, this role is an incredible opportunity to shape the future of events in the fast-evolving world of blockchain. As the Head of Events, you’ll have the chance to design and execute world-class experiences that bring together visionaries, builders, and enthusiasts from around the globe. With an ample annual budget, a talented team at your side, and full support from leadership, you’ll create impactful moments that inspire innovation, foster connections, and drive real change in the industry. We understand that events are a big driver of success in our industry, and we're excited to be hiring at this senior level to bring on a true strategist who can connect programs and initiatives to critical business outcomes.If you’re someone who drives big ideas, thrives under pressure, and wants to build a high performing team that crafts marquee experiences, this is your chance to make your mark on a global stage.Responsibilities:1. Strategic Leadership: • Develop and execute a global events strategy aligned with the Foundation’s goals • Design a portfolio of flagship conferences, hackathons, and regional events. • Define KPIs and metrics to measure event success and organizational impact.2. Budget Management • Own and manage an annual budget, ensuring strategic and cost-effective allocation. • Negotiate and manage vendor contracts to maximize ROI. • Monitor financials to ensure on-budget, high-quality event delivery.3. Team Leadership • Lead and mentor a team of high performing event professionals, fostering collaboration and accountability. • Provide growth opportunities to develop team expertise and capabilities. • Coordinate cross-functionally efficiently and to a high level of satisfaction with marketing, ecosystem, product and growth teams.4. Event Design and Execution • Oversee the lifecycle of events, from planning to execution and evaluation. • Deliver exceptional experiences through innovative design and seamless logistics. • Implement risk management and compliance processes for smooth operations. • Deliver tightly organised events on schedule and budget, while making thoughtful demands on organisational resources.5. Ecosystem Engagement • Foster productive connections with diverse stakeholders across our ecosystem. • Build partnerships to co-host or sponsor events that enhance community ties. • Ensure inclusivity and diversity in event design and participation.Evaluation Criteria:1. Must Have: • Global Strategy Experience: Proven track record in designing and executing a global events strategy for high-profile, multi-format events (e.g., summits, hackathons, virtual conferences). • Budget Management Expertise: Skilled in managing and optimizing an annual budget of $XM+, ensuring strategic alignment and cost efficiency. • Team Leadership: Experience building and managing a team of 3+ professionals, fostering a culture of innovation, collaboration, and accountability. • ROI Analysis: Demonstrated ability to measure and communicate event impact through data-driven ROI analyses presented to senior leadership. • Leadership Gravitas: Must have confidence and influence to face off against a broad variety of stakeholders and advocate for their work.2. Should Have: • Blockchain Knowledge: Familiarity with blockchain trends, audiences, and ecosystem stakeholders. • Collaboration Skills: Strong cross-functional collaboration abilities to work effectively with a broad variety of teams. • Vendor Management: Exceptional negotiation and vendor management skills to secure optimal commercial outcomes.3. Nice to Have: • Tech Events: Prior experience leading events in the technology sector. • Global Production Experience: Experience producing events across geographies, with an understanding of regulations and cultural nuances.

About the Company:  Shardeum is building a layer 1, EVM-based, linearly scalable, smart contract platform that provides low gas fees forever while maintaining true decentralization and solid security through dynamic state sharding. Shardeum aims to be a chain capable of onboarding over a billion people to the crypto revolution, while also democratizing accessibility to decentralization. Shardeum’s mission is supported by prominent Venture Capitalists in the blockchain space, and we are on track to become one of the most widely used and well known smart contract platforms in blockchain history.We encourage you to browse our website, Whitepaper, Discord and YouTube channel to learn more about the project. You can even try downloading our validator software and joining our Testnet. We encourage people of all backgrounds to apply. Your talent and potential is what matters most to us. Shardeum is committed to creating an inclusive culture.About The Role: The Engineering team at Shardeum is responsible for delivering the Shardeum Mainnet, and developing the smart contract platform, the consensus layer and the protocol layer. We focus on building scalable, performant, secure and reliable software that can be downloaded by thousands of node operators to actualize the Shardeum network. In this position, you’ll have the opportunity to share and cultivate your ideas while innovating to enhance testing methodologies and various components of the Shardeum platform.  We tackle unique challenges that are yet to be addressed, making this role both exciting and rewarding. If you're eager to contribute to a project that holds significance in the global Web3 landscape, check out the details below: What You'll Be Doing: Own and manage the entire QA function and team, consisting of QA Testers and automation engineers. Develop and implement comprehensive QA strategies to ensure the quality of Shardeum’s decentralized platform. Design, develop, and maintain automated testing frameworks and suites. Conduct manual testing as needed, including: white box, integration, system and regression testing. Collaborate closely with development teams to integrate testing into the development workflow. Identify, document, and track bugs and issues until they are resolved. Perform regular reviews and audits of QA processes and standards. Participate in daily and weekly stand-ups, sprint planning and retrospectives with cross-functional teams, including development, product management, and operations, to maintain quality throughout the software development lifecycle. Stay updated on the latest industry trends and technologies to keep Shardeum’s QA practices at the forefront. What We're Looking For: 10+ years of experience in Quality Assurance, including 3+ years in a managerial role. Extensive knowledge of QA methodologies, tools, and processes. Proficiency in creating and managing automated test scripts using automation tools. Extensive experience with manual testing, and meticulous in ensuring comprehensive feature coverage. You excel in problem-solving and debugging. Experienced in Agile/Scrum methodologies. A solid understanding of the software development lifecycle and the role of QA within it. You demonstrate strong leadership, ownership and management skills. Strong communication skills - both verbal and written. We'd Love If You Have: Experience in the blockchain or decentralized applications space. You possess experience in programming languages like Node.js, Typescript or Rust. You’ve made contributions to open-source projects in the areas of QA and/or testing. You have a strong interest in Blockchain, Web3, AI, or Distributed Networks. Experience with consensus protocols and other blockchains Experience running a node in a blockchain network Familiarity with the Shardeum open source repos  Read the Bitcoin and Ethereum whitepapers We are building the infrastructure for Web 3.0. It's going to be a rollercoaster ride but promises to be fun.

What are we all about? We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems. Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more. Today, we are a 350+ strong team working remotely across 66+ countries. View all our open positions here: https://www.nethermind.io/open-roles We're seeking an experienced Smart Contract Security Auditor to join our team in safeguarding Web3 protocols and applications. As a key member of our security team, you'll conduct comprehensive audits of smart contracts while contributing to our blockchain infrastructure development. Responsibilities: Work directly with protocols in the Solana, Ethereum, StarkNet, and Polkadot ecosystems to review their code and help secure their protocols. Perform thorough security audits of smart contracts written in Solidity Develop and maintain security tooling using Golang to enhance our audit capabilities Collaborate with teammates to maintain and continually improve our existing blockchain security tools using modern software engineering practices. Develop new blockchain security tools. Engage in meetings with clients to discuss security and best practice improvements. Skills: Understanding of blockchain technology and the Ethereum network. Solid understanding of the Ethereum Virtual Machine. Fluency in Solidity smart contract security and Golang audit. Detailed understanding of common smart contract vulnerabilities. Fluency with common tools and frameworks used for the development and security analysis of smart contracts. Strong debugging skills and/or experience in reverse engineering. Portfolio of audit report. Nice to Haves: Good written and verbal communication skills. Understanding of most common DeFi applications. Publicly visible audit reports in your portfolio. Disclaimer: I hereby consent to my personal information being stored and processed by Demerzel Solutions Limited (t/a Nethermind) (the “Company”) for recruitment purposes in relation to both the selected job role and any other role the Company considers me a qualified candidate for. All data storing and processing by the Company takes place in accordance with the UK GDPR. Kindly refer to our privacy policy for more details. Your consent to share personal information is entirely voluntary, and you may withdraw your consent at any time. Should you have any questions about this process, or wish to withdraw your consent please contact: [email protected] Keep up to date on what we are working on by following us on our social channels       Click here to view our Privacy Policy.

The Graph Foundation supports core contributors, enables community development, distributing grants, and leads decentralization efforts within the broader Graph ecosystem. The Foundation's mandate is to develop and grow the ecosystem to ensure the sustainability of The Graph Network. The Finance team supports the co-heads of the Foundation and the council in Finance related decisions ranging from budget, accounting and treasury management. The role is directly reporting to the CFO of The Graph foundation. This role is ideal for someone with a strong accounting or finance background who thrives in a dynamic environment and can drive impact from day one. The FP&A Analyst will be a key member of the Finance team. Wherever this person is located, they will be working remotely. Ideally, this person will be physically located in Europe, however for the right candidate the team is open to candidates in North America. What You'll Be Doing Financial Reporting: Prepare and manage monthly, quarterly, and annual financial reports, ensuring accuracy and compliance with company standards. Budgeting & Forecasting: Assist in developing, monitoring, and updating budgets, forecasts, and financial projections to support strategic planning.Cash Flow Management: Support cash flow analysis and planning to ensure efficient capital allocation.Accounting & Reconciliation: Oversee day-to-day accounting tasks, including ledger reconciliations, expense tracking, and accounts payable/receivable processes.Treasury Management: Support treasury management decisions to optimize financial strategy and resource allocation. What We Expect Bachelor's degree in Finance, Accounting, or a related field. CPA or CFA strongly preferred.2-10 years of experience in a finance role, ideally within tech or a high-growth startupProficiency in financial software (e.g., Bitwave, QuickBooks, or similar) and crypto wallet and custody a plusAdvanced Excel skills and strong familiarity with financial modelingExceptional analytical, problem-solving, and communication skillsFamiliarity with crypto and blockchain book keeping and accounting a plus About The Graph The Graph is the source of data and information for the decentralized internet. As the original decentralized data marketplace that introduced and standardized subgraphs, The Graph has become web3's method of indexing and accessing blockchain data. Since its launch in 2018, tens of thousands of developers have built subgraphs for dapps across 40+ blockchains - including Ethereum, Arbitrum, Optimism, Base, Polygon, Celo, Fantom, Gnosis, and Avalanche. As demand for data in web3 continues to grow, The Graph enters a New Era with a more expansive vision including new data services and query languages, ensuring the decentralized protocol can serve any use case - now and into the future. Discover more about how The Graph is shaping the future of decentralized physical infrastructure networks (DePIN) and stay connected with the community. Follow The Graph on X, LinkedIn, Instagram, Facebook, Reddit, and Medium. Join the community on The Graph's Telegram, join technical discussions on The Graph's Discord. The Graph Foundation oversees The Graph Network. The Graph Foundation is overseen by the Technical Council. Edge & Node, StreamingFast, Semiotic Labs, Messari, GraphOps, Pinax and Geo are eight of the many organizations within The Graph ecosystem.

Job Responsibilities: Manage the development of new services and target new use cases using the available products as building blocks Launch initiatives in user research/community engagement for feature requests, bug reports, and general customer feedback. Create and maintain a high-level product roadmap, where you define product strategy based on employers vision and your own market research. Support the release plan of new products, updates, and features. This includes working directly with Cofounders, Dev team, Design, Marketing, and Integrations to ensure all team members are aligned on the launch requirements, timelines, and post-release monitoring. Build data analysis and monitoring dashboards to monitor adoption and retention metrics to product-specific usage which you will use to help guide the team's strategic decisions and priorities. Own the overall user education and documentation knowledge base, including tutorials and showcases. Candidate Requirements: Analytical, ability to work with data. Innovative thinking. Interest in Crypto/DeFi/Ethereum technology. High level of English. Ability to work remotely, autonomously, and take initiative. Desirable: Product management experience on technical open-source projects. Previous experience in Crypto/DeFi/Ethereum technology. A technical background, CS/Engineering/Finance degree, or relevant experience.

About Polygon LabsPolygon Labs is a software development company building and developing a network of aggregated blockchains via the AggLayer, secured by Ethereum. As public infrastructure, the AggLayer will bring together user bases and liquidity for any connected chain, and leverage Ethereum as a settlement layer. Polygon Labs has also contributed to the core development of several widely-adopted scaling protocols and tools for launching blockchains, including Polygon PoS, Polygon zkEVM, and Polygon Miden, which is in development as well as Polygon CDK.Your Role Protocols are at the heart of Polygon's core technology stacks.  As the Director of PM for the protocol team, you’ll be building the technology and ecosystem that drives zkEVM and CDK.  You'll be working on challenging problems, collaborating with world-class engineers, and moving toward shared goals, all while staying hyper-focused on delivering great products that delight developers and end users.Your Responsibilities You are comfortable working in ambiguity, taking charge, and driving cross-functional alignment to get a product to the finish line, overcoming obstacles as they arise. You will:Have a comprehensive understanding of the crypto space and Polygon’s strategyHave the ability to gather and use data (competitive info, customer interviews, etc) to build strong business casesGather and write strong requirements for PRDs that establish help roadmaps and milestonesWork with several stakeholders across all parts of the organization, e.g. engineering, TPM, BD, Enablement and leadership/founders etc to deliver critical product milestonesServe as the point person between leadership and technical teams, translating strategic goals into actionable roadmapsHave strong communication skills with the ability to cater to the audience that’s needed for each occasionAbility to be an influential member of a highly integrated team composed of both technical and non-technical membersWhat You’ll Need Bachelor's degree (or equivalent) or higher in Computer Science, Computer Engineering, or similar preferred7+ years of product management experience managing successful products from inception to launch and beyond. Deep understanding of Ethereum, L1s, and L2 scaling solutions. Demonstrated ability to build a product vision and roadmapExperience coordinating a complete lifecycle of product developmentSelf-starter with a strong bias for actionPreferred QualificationsExperience with DeFi and existing L2 stacks as a PM or user of the technology stackFamiliarity with ZK technology Experience leading product teamsLeverage AI tools to streamline development, speed up data analysis, and automate tasksPolygon Labs PerksThe goal of the Polygon Labs total rewards program is to support the health and well-being of you and your family. Our comprehensive compensation plan includes the following benefits for our full time employees:Remote first global workforceIndustry leading Medical, Dental and Vision health insurance*Company matching 401k with 3% match*$1,500 Home Office Set Up Allowance (life-time max)$200 Annual Book Allowance Program $75 Monthly internet or phone reimbursementFlexible Time Off1 company wide wellness Friday day off per quarterCompany issued laptopEgg freezing, mental health, and employee wellness benefits*In certain countries medical, dental and vision is fully covered for employees & their dependents. This is country and plan specific.*401k is for United States employees onlyPolygon Labs is committed to a diverse and inclusive workplace and is an equal opportunity employer. We do not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. Polygon Labs is committed to treating all people in a way that allows them to maintain their dignity and independence. We believe in integration and equal opportunity. Accommodations are available throughout the recruitment process and applicants with a disability may request to be accommodated throughout the recruitment process. We will work with all applicants to accommodate their individual accessibility needs.If you think you have what it takes, but don't necessarily meet every single point on the job description, please still get in touch. We'd love to have a chat and see if you could be a great fit.Learn More about Polygon LabsWebsite |Twitter|Developer Twitter |Telegram |Reddit |Discord |Instagram |Facebook |LinkedIn

SORAMITSU is an award-winning global financial technology company with expertise in developing blockchain-based solutions for digital asset and identity management. Our mission is to use blockchain to promote innovation and solve pressing societal challenges.SORAMITSU is the developer of and major contributor to the open-source blockchain platform Hyperledger Iroha, which is tailored for enterprise and public-sector use. Hyperledger Iroha, a project of Hyperledger Foundation, part of the Linux Foundation, has a permissions system that is scalable and performant.Utilizing blockchain, SORAMITSU has developed a digital currency for the National Bank of Cambodia, a CBDC Proof-of-Concept with the Bank of the Lao PDR, a closed-loop payment system for the University of Aizu in Japan, an identity verification system prototype for Bank Central Asia in Indonesia, we were finalists in the Monetary Authority of Singapore CBDC Challenge, and are currently participating in Asia-Pacific's first proof-of-concept test of a cross-border, multi-currency security settlement system using distributed ledger technology with the Asian Development Bank. We have also conducted proof-of-concept tests for several major Japanese enterprises, and are active contributors to open source projects, such as Klaytn, South Korea's leading Layer-1 blockchain, KAGOME, the C++ Polkadot Host implementation, the SORA crypto-economic system, the Polkaswap DEX, and the DeFi wallet, Fearless WalletBased on these experiences, SORAMITSU aims to deploy cutting-edge technology on a global level in order to expedite financial inclusion and health, mitigate economic inefficiencies, and contribute to the fulfilment of the Sustainable Development Goals.You can find out more by visiting our homepage at soramitsu.co.jp or check out our Twitter profile.We are seeking a highly skilled blockchain developer with deep expertise in blockchain technologies and smart contract development, focusing on Solidity, Ethereum, and various Layer 1 and Layer 2 protocols. This role will involve designing, implementing, and optimizing secure and scalable blockchain solutions.You will be responsible for:Develop, deploy, and maintain secure, efficient, and scalable smart contracts on Ethereum and other blockchain networks.Architect decentralized systems and define smart contract standards for new projects and features.Lead code reviews and provide mentorship to junior and mid-level developers.Optimize smart contract code for gas efficiency, performance, and security.Collaborate with cross-functional teams including frontend developers, product managers, and security experts.Identify and mitigate security risks within smart contracts.Stay up-to-date with the latest trends, tools, and best practices in Solidity and blockchain development.Perform rigorous testing and auditing of contracts, and ensure all code is secure and bug-free.Requirements:3+ years working specifically with Solidity and Ethereum-based development.Fluent EnglishDeep understanding of Ethereum's architecture, smart contracts, and related technologies.Proficient in Solidity, Web3.js, and Ethers.js.Experience with deploying and interacting with smart contracts on Ethereum, Binance Smart Chain, or other EVM-compatible blockchains.Familiarity with common design patterns (e.g., ERC-20, ERC-721, ERC-1155) and decentralized protocols.Expertise in smart contract security practices, including common vulnerabilities (e.g., reentrancy, overflow/underflow, front-running).Knowledge of decentralized finance (DeFi) protocols and their smart contract ecosystems.Experience with testing frameworks (e.g., Truffle, Hardhat, Foundry).Experience with CI/CD pipelines and blockchain-specific deployment strategies.Ability to communicate complex technical concepts effectively to both technical and non-technical stakeholders.Strong problem-solving, debugging, and optimization skills.Preferred:Experience in developing for Layer 2 networks or alternative blockchain protocols (e.g., Optimism, Arbitrum, Polygon).Familiarity with cross-chain technologies and bridging protocols.Experience with smart contract auditing tools like Slither, MythX, and othersGeneral Skills:Programming Languages: Solidity, JavaScript, Python, with knowledge of Rust considered a plus.Blockchain Platforms: Ethereum, Binance Smart Chain, Polygon, Arbitrum, Optimism, etc.Frameworks & Libraries: Truffle, Hardhat, Foundry, Web3.js, Ethers.js.Security Best Practices: Smart contract auditing, vulnerability mitigation, best practices for gas optimization.Collaboration Tools: Git, GitHub/GitLab, JIRA, Slack, etc.Soft Skills: Strong communication in English, problem-solving, and analytical thinking.Additional Requirements:Please include a link to your GitHub profile showcasing examples of your code or repositories where you’ve contributed.What we offer:A relaxed remote-first (work from anywhere) work environment with flexible working hoursA permanent, full-time role with a rapidly growing international team of professionalsAn educational budget to support your continued growth and developmentOpportunities to attend global meetups and conferences for learning and/or speaking engagementsAn opportunity to be a part of an award-winning team designing a better world through decentralized technologiesThis is a remote position. Our distributed team is mostly spread across Europe and Asia. Team meetings are held generally during European working hours, and it is expected that you would adapt if necessary and be available accordingly.If you have the required qualifications and are passionate about the Web3 industry, we encourage you to apply for this exciting opportunity.SORAMITSU values diversity and is committed to providing equal opportunities for all applicants and employees. Our employment decisions, such as hiring, promotion, discipline, and termination, are based solely on an individual's qualifications, performance, and business needs. We do not discriminate against anyone on the basis of their race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other protected status under federal, state, or local law.

Ethereum Name Service (ENS) is a decentralized, permissionless naming system built on the Ethereum blockchain that enables human-readable names (like "myname.eth") to be linked to standard Ethereum addresses and other distributed systems. As one of the first protocols built on Ethereum, ENS has enabled over 3 million registered .eth names, and over another 20 million ENS names from teams such as Coinbase, Uniswap, and Linea, as well as integrations with hundreds of other apps, wallets, protocols, and browsers in the crypto ecosystem. ENS Labs has been driving the core development of the ENS protocol since 2018. We created the ENS app, open-source libraries, and core smart contracts. We are on a mission to make crypto-powered experiences as easy and accessible as browsing the web. Join us as we build the next iteration of our protocol, ENSv2, and pioneer a more decentralized, flexible, and scalable ENS for the future. We are seeking a highly skilled ZK Engineer to join our team and help integrate Zero-Knowledge proofs into ENS protocol to enhance its security, scalability, and privacy features.   About the Role The ZK Engineer will be responsible for developing, implementing, and optimizing Zero-Knowledge proof solutions within the ENS ecosystem. This includes working on privacy-preserving features, transaction verification, and scalability solutions that will enable ENS to meet the growing demands of the Web3 community. You will collaborate with cross-functional teams to integrate ZK technology into ENS’s existing and future infrastructure, ensuring that new features align with decentralized principles and privacy concerns. The ideal candidate will have a deep understanding of cryptographic protocols, particularly Zero-Knowledge proofs, and how they can be applied to blockchain ecosystems. Experience in Ethereum, zk-SNARKs, zk-STARKs, or similar ZK protocols is a significant plus.   What You'll Do Design, implement, and optimize Zero-Knowledge proof systems (such as zk-SNARKs or zk-STARKs) to improve the privacy, scalability, and performance of the ENS platform. Collaborate with the product and engineering teams to develop privacy-preserving features for ENS users, ensuring that sensitive data is protected while maintaining decentralization. Work closely with Ethereum and blockchain engineers to integrate ZK solutions with existing Ethereum smart contracts, layer-2 protocols, and other decentralized systems. Implement Zero-Knowledge scalability solutions to optimize ENS performance, ensuring security and integrity through testing and auditing cryptographic proofs and smart contracts. Work closely with other engineers to ensure seamless integration of ZK features across the ENS platform. Contribute to the ENS community and the broader Ethereum ecosystem by sharing knowledge about ZK technologies, best practices, and new developments in privacy and scalability solutions.   Who You Are 3+ years of experience with Zero-Knowledge proofs or cryptographic tech in blockchain or distributed systems. Proficient in ZK protocols and privacy-enhancing cryptographic techniques. Hands-on experience with Ethereum smart contracts, Layer-2 solutions, and blockchain tech. Strong understanding of Ethereum, DeFi, and Web3 ecosystems. Excellent problem-solving skills, applying ZK to privacy, scalability, and security challenges. Experience designing and implementing cryptographic solutions in decentralized systems. Strong communication skills, able to explain complex concepts to technical and non-technical audiences.   It’s a Plus, If You Have Familiarity with Ethereum Layer-2 protocols (e.g., Optimistic Rollups, zk-Rollups) and their interaction with Zero-Knowledge proofs. Experience with formal verification of cryptographic protocols or smart contracts. Contributions to open-source cryptographic projects or publications in cryptography and blockchain.