Senior Blockchain Developer - Web3 Scale-up

Senior Blockchain Engineer - DeFi / Smart ContractsLausanne, Switzerland (Hybrid) | % | Permanent contractA fast-growing Swiss technology company is looking for an experienced Senior Blockchain Engineer to strengthen its DeFi product team. X role, you ll heart of designing and building decentralized finance solutions, working in a environment where new ideas are encouraged and quickly turned into Blockchain Developer - Web3 Scale-upYour Mission- Take ownership of the design, development, testing and deployment of smart contracts within a DeFi ecosystem.- business and product requirements into secure, scalable blockchain architectures.- Work hand-in-hand with fellow engineers, product owners and other stakeholders to deliver new blockchain functionalities.- Apply rigorous testing methodologies (unit, fuzzing) to ensure robustness and security.- Help evolve the blockchain infrastructure, improve internal tools, and streamline development workflows.- Keep a close eye on emerging DeFi trends, L2 solutions and smart contract best practices to push You Bring- A deep interest in DeFi and blockchain technologies, coupled with strong analytical and problem-solving skills.- The ability to thrive in a fast-moving environment, make informed decisions with partial and work autonomously while effectively.Several years of hands-on blockchain development, including : - Advanced proficiency in Solidity and smart contract security.- Solid understanding of DeFi primitives, DEXs, and liquidity mechanisms.- Strong generalist software engineering background (multiple languages, testing, clean architecture).- Experience working in multidisciplinary engineering teams X , scalable codebases. Leadership experience is a plus.- Excellent skills in English; proficiency in French is a strong asset.Technical Environment of the company- Blockchain : chains, Solidity, toolchains, extensive smart contract test coverage including fuzzing and property-based testing.- Frontend : Modern TypeScript stack with React-based frameworks, tightly with blockchain backends.- Backend & Infrastructure : , REST / GraphQL APIs, Dockerized services, CI / CD pipelines for rapid and secure deployments.- Architecture : Modular on-chain / off-chain indexing, monitoring and analytics dashboards to ensure reliability and performance.- Culture : Developer-driven workflows, open discussions on architecture choices, strong emphasis on code quality, security, and peer Join- with a high-caliber team X specialists to build cutting-edge DeFi products.- Benefit from X package aligned with your expertise.- Enjoy a hybrid working model, with two remote days per week and flexible hours.- Contribute to impactful forefront of the DeFi ecosystem. jid7e729b7aen jit0206aen jpiy26aen