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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 critical components such as the smart contract platform, consensus layer, and protocol layer. As part of this team, the SDET (Software Development Engineer in Test) will play a key role in ensuring the quality, reliability, and performance of Shardeum’s decentralized platform through robust test automation, debugging, and validation processes. This role is ideal for engineers who have a passion for test automation, load testing, and identifying root causes of bugs to enhance blockchain performance and scalability. If you’re excited about solving unique challenges in the Web3 space and driving innovation in blockchain testing methodologies, we want to hear from you! What You'll Be Doing:
Analyze bug tickets, debug code, and identify the root cause of errors across the Shardeum platform. Design, develop, and maintain test automation frameworks and reusable test scripts to validate core functionality, including nodes, consensus mechanisms, smart contracts, and blockchain transactions. Utilize cutting edge AI tools to make testing faster and more efficient (Cursor, Github Copilot, Windsurf, Cline, etc..) Develop and execute load testing scripts to validate system performance under high transaction loads and varying node configurations. Create comprehensive test coverage through functional, integration, system, and regression testing while optimizing test suites and identifying performance bottlenecks. Develop end-to-end (E2E) test cases for complex workflows, ensuring reliability of consensus protocols and smart contract execution. Collaborate closely with development teams to integrate testing into CI/CD pipelines, improve testing workflows, and troubleshoot dependency failures. Build and maintain internal tools to improve developer experience, productivity, and test efficiency. Troubleshoot highly complex automated testing failures using industry-standard frameworks and custom tools, working with developers and backend partners to triage issues and improve E2E reliability. Develop monitoring tools and utilities to track blockchain-specific performance metrics and test results. Participate actively in agile ceremonies, including sprint planning, stand-ups, and retrospectives, to drive testing best practices. Continuously research and adopt innovative tools, frameworks, and testing methodologies to improve quality, scalability, and efficiency of testing processes.
What We're Looking For:
5+ years of experience in Software Engineering or SDET roles with a focus on testing. Proficiency in programming languages like TypeScript/JavaScript and Node.js, with the ability to develop robust and reusable test scripts. Ability/desire to write Unit Tests in TypeScript/JavaScript and Node.js Proven ability to analyze and debug complex codebases, troubleshoot multi-tier web architecture issues, and identify root causes of failures. Experience integrating automated tests into CI/CD workflows (e.g., GitHub Actions, Jenkins). Expertise in defining and implementing release, regression, and smoke testing strategies for large, multi-team applications. Experience with white-box testing methodologies to ensure deep validation of internal components. Strong problem-solving and critical-thinking skills, particularly in analyzing blockchain-specific issues. You have a tester mindset, are curious, and excel at designing innovative and interesting test scenarios. You are creative in applying proven tools/test frameworks as well as crafting new solutions to challenging problems. Knowledge of Agile/Scrum methodologies and the software development lifecycle. Excellent verbal and written communication skills for clear bug reporting and collaboration across teams.
We'd Love If You Have:
Experience with testing decentralized applications (dApps), consensus protocols, or blockchain platforms. Experience in running nodes within blockchain networks and monitoring performance metrics. Familiarity with blockchain tools and frameworks (e.g., Web3.js, Hardhat, Truffle). Hands-on knowledge and experience with AI tools (Cursor, Github Copilot, Windsurf, Cline, etc...), and the ability to demonstrate how you utilize them in your day to day. Contributions to open-source projects related to testing, automation, or blockchain. A passion for emerging technologies, including Web3, AI, and distributed systems. Experience using or contributing to the Shardeum open-source repos. Familiarity with blockchain performance benchmarks and profiling tools. Knowledge of 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.
Apply Now:
Across’ purpose: Across is to fulfill crypto’s potential by making blockchains more usable, more accessible and more efficient.
Across’ Vision: Intents are the standard in cross-chain interoperability.
Risk Labs is the foundation and core team behind UMA, and some top tier products built with it such as oSnap, Oval, and the Across protocol. The Risk Labs team, operates as one cohesive (amazing!) culture, but focuses on two core protocols, UMA and Across. UMA and Across are decentralized protocols governed by community members across the globe in DAOs, and are supported by Risk Labs Foundation. UMA’s optimistic oracle (OO) can record any verifiable truth or data onto a blockchain. Across is leading the future of interoperability with its frontier intents based architecture.
We’re looking for a Jr. Smart Contract Engineer to join the Across protocol team. You’d be working alongside top tier engineering talent, world class data driven product development, and a team motivated to be hugely impactful for the exciting interoperable future that we’re racing towards. You’re a person who loves optimizing and building at the intersection of technology, finance, and data.
These responsibilities are going to be similar to the Sr. Smart Contract role posted; however, as a junior engineer, we have lower expectations about your previous experience. That doesn’t mean our expectations are low, instead we have higher expectations for the demonstrable and uncanny ability to learn and apply new concepts quickly. Someone who is exceptionally keen to learn and invest their time with us, in exchange for us investing in their growth. Someone who we hire for this role will become proficient in the above categories.
Studies have shown that women and people of colour are less likely to apply to jobs unless they meet every single qualification. Risk Labs, the employing entity, is an equal opportunity employer and is dedicated to diverse, inclusive, and authentic workplaces. So, if you’re excited about this role but your past experience doesn’t perfectly align- we encourage you to apply anyways. We value you taking the chance. Risk labs will not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
We are a group that’s aligned with the ethos of the crypto industry and doing our best to make an impact for the industry and world at large. You’ll succeed with Risk Labs if you’re a self-starter, kind, adaptable, and passionate about making an impact. Risk Labs is a values driven team that strives to create an environment where we can do our best work, and succeed. We’re building products that we believe in, and continuing to strive for innovation and growth. Both personally and professionally we support each other to create a happy, healthy, and inspired team vibe, so we can remain motivated to build things the world needs and loves. We take pride in the fact that we are at once family-friendly as well as nomad-friendly.
UMA’s optimistic oracle is a decentralized truth machine for Web3- yes, that’s a bold and very exciting statement. We’ve built a solid foundation, in terms of the team, the technology, and the products, and the road map ahead is one full of exciting technical challenges, growth, and telling our story to the world. Across is creating an interoperable world where DeFi is seamless with its intents based architecture. We’ve grown from an early bridge, to a market leader, and won’t stop innovating and building. We have big dreams, and a team excited to bring them to life.
Clearpool is the leading decentralized finance credit marketplace, preparing to launch Ozean — the blockchain for RWA yield. Clearpool’s permissionless protocol enables institutions to raise unsecured liquidity directly from DeFi markets, while a separate fully permissioned platform, Clearpool Prime, further meets the compliance needs for wholesale borrowing and lending of digital assets by institutional market participants.
Launched in March 2022, Clearpool has originated over US$620 million in loans with a growing user base spanning both crypto and TradFi institutions such as Wintermute, Jane Street, Fasanara Digital, CoinShares, and others. The protocol launched on the Ethereum mainnet in March 2022, followed by the expansions to Polygon PoS, Polygon zkEVM, Optimism, Mantle Network, Flare Network, Base and Arbitrum. Clearpool is currently building Ozean, the first blockchain for RWA yield built on and supported by Optimism.
We are seeking a highly skilled and experienced Senior Smart contract / Rollup Engineering Lead to join our dynamic team. The ideal candidate will have a strong background in Solidity/EVM Smart contracts with a keen interest in the evolving Web3 and RWA landscape for DeFi. This role primarily involves creating, designing, and implementing smart contracts, leading and managing the rollup infrastructure (Layerzero OFT, Hyperlane, Optimism L2 stack).
Matter Labs is looking to hire a Staff Engineer (Cryptography) to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
Matter Labs - Hyperscaling Ethereum with ZK tech.
The Sui Foundation exists to support the development, growth and adoption of the Sui network. Sui is the first permissionless Layer 1 blockchain designed from the ground up to enable creators and developers to build unique Web3 experiences from gaming to finance.
The Sui Foundation is committed to three decentralization principles; Embrace transparency and level the playing field, Communicate openly to build a culture of trust, and Engage directly with the community.
Mission:
Onboard the next billion users to web3 by supporting the advancement and global adoption of the Sui blockchain.
Vision:To create a better world that unlocks opportunities through universal access and individual ownership.The Role:
The Developer Relations team engages with the developer community online and in person to provide expert help and guidance in building next-generation Web3 applications on Sui. By talking to the community and understanding developer pain points, the team creates a rapid and positive feedback loop between the developer community and the protocol.
As an engineer on the Developer Relations team, you will have or develop a technical understanding of Sui, as well as a proficiency in writing Move. You will have or develop an understanding of the Sui ecosystem by using developer tooling and testing apps. You will use your newly-developed knowledge to collaborate and connect with developers, enabling them to build and innovate on Sui.You will use your excellent communication skills to explain complex concepts to a wide variety of audiences, such as Web2 developers and Solidity developers. You will disseminate and advocate for Sui through a variety of mediums, including documentation, tutorials and workshops.Sui is not just a blockchain, but a coordination layer that powers a new, decentralized internet. You will use your passion for Web3 to learn about and advocate for this decentralized stack. In particular, you will use your knowledge of traditional storage solutions to advocate for Walrus, the decentralized storage layer built on Sui.As an experienced engineer, you will be able to operate on your initiative, prioritize work streams based on impact, and manage cross-functional teams. This role is an exciting opportunity for someone who enjoys high-impact, complex, and multi-disciplinary programs.Responsibilities:
Understand the community's goals, and provide technical expertise and direction to help the developers navigate their journey of building on Sui.
Create and own the feedback loop between the community and the network.
Translate developer feedback into meaningful product insights for future product development.
Develop and deliver remote and in-person training sessions and workshops for new and existing Sui developers.
Requirements:
Based in Europe.
7+ years of Software Engineering or combination of Software and DevRel Engineering experience.
Strong knowledge of storage protocols, including file- and blob-based solutions, and Web2 and Web3 (e.g. S3, Azure Blob, IPFS, Arweave, Filecoin).
Strong written and verbal communication skills.
Strong interest in Web3.
Good understanding of developer profiles, developer markets and trends within Europe, gained either through developer-facing work experience or personal intuition.
Preferred:
Home base in or proximity to a strong developer base. Preference for London, Lisbon or Barcelona. Other possibilities include Athens, Warsaw, Budapest, Belgrade and Istanbul.
Prior DevRel experience, or related developer-facing function (e.g. Solutions Engineering).
Experience with blockchain, cryptography and/or Web3 engineering.
Experience with Move and/or Rust programming language(s).
Apply Now:
The Sui Foundation exists to support the development, growth and adoption of the Sui network. Sui is the first permissionless Layer 1 blockchain designed from the ground up to enable creators and developers to build unique Web3 experiences from gaming to finance.
The Sui Foundation is committed to three decentralization principles; Embrace transparency and level the playing field, Communicate openly to build a culture of trust, and Engage directly with the community.
Mission:
Onboard the next billion users to web3 by supporting the advancement and global adoption of the Sui blockchain.
Vision:To create a better world that unlocks opportunities through universal access and individual ownership.The Role:
The Developer Relations team engages with the developer community online and in person to provide expert help and guidance in building next-generation Web3 applications on Sui. By talking to the community and understanding developer pain points, the team creates a rapid and positive feedback loop between the developer community and the protocol.
As an engineer on the Developer Relations team, you will have or develop a technical understanding of Sui, as well as a proficiency in writing Move. You will have or develop an understanding of the Sui ecosystem by using developer tooling and testing apps. You will use your newly-developed knowledge to collaborate and connect with developers, enabling them to build and innovate on Sui.You will use your excellent communication skills to explain complex concepts to a wide variety of audiences, such as Web2 developers and Solidity developers. You will disseminate and advocate for Sui through a variety of mediums, including documentation, tutorials and workshops.Sui is not just a blockchain, but a coordination layer that powers a new, decentralized internet. You will use your passion for Web3 to learn about and advocate for this decentralized stack. In particular, you will use your knowledge of traditional storage solutions to advocate for Walrus, the decentralized storage layer built on Sui.As an experienced engineer, you will be able to operate on your initiative, prioritize work streams based on impact, and manage cross-functional teams. This role is an exciting opportunity for someone who enjoys high-impact, complex, and multi-disciplinary programs.Responsibilities:
Understand the community's goals, and provide technical expertise and direction to help the developers navigate their journey of building on Sui.
Create and own the feedback loop between the community and the network.
Translate developer feedback into meaningful product insights for future product development.
Develop and deliver remote and in-person training sessions and workshops for new and existing Sui developers.
Requirements:
Based in APAC.
7+ years of Software Engineering or combination of Software and DevRel Engineering experience.
Strong knowledge of storage protocols, including file- and blob-based solutions, and Web2 and Web3 (e.g. S3, Azure Blob, IPFS, Arweave, Filecoin).
Strong written and verbal communication skills.
Strong interest in Web3.
Good understanding of developer profiles, developer markets and trends within Europe, gained either through developer-facing work experience or personal intuition.
Preferred:
Home base in or proximity to a strong developer base.
Prior DevRel experience, or related developer-facing function (e.g. Solutions Engineering).
Experience with blockchain, cryptography and/or Web3 engineering.
Experience with Move and/or Rust programming language(s).
Apply Now: