Senior Back (TypeScript) EngineerSenior Backend Developer - Web3 Infrastructure (TypeScript & Rust)Location: Lausanne, Switzerland | Work Setup: Hybrid (2 days remote/week)Type: Permanent | Start Date: Flexible | Workload: 80-100%Are you a backend engineer passionate about building performant, scalable systems and eager to explore cutting-edge technologies in the Web3 space? We're looking for a Senior Backend Developer to join a fast-growing DeFi project backed by a highly technical team and a strong crypto-native vision.ð§ Your MissionArchitect and implement high-reliability backend services (using TypeScript & Rust) that support core blockchain-enabled products.Build APIs, data pipelines, and internal tooling to streamline platform scalability and performance.Participate in the full development lifecycle"from system design to testing, deployment, monitoring, and maintenance.Collaborate cross-functionally with engineering and product teams to ensure consistent, secure, and robust system behavior.Contribute to CI/CD pipelines and DevOps automation.Continuously improve code quality, performance benchmarks, and developer experience.ð ïž Tech EnvironmentCore Stack: TypeScript ( microservices), Rust (growing footprint)Web3 / Smart Contracts: Solidity (EVM), Hardhat, multi-chain deployments (ETH, BSC, Arbitrum, etc.)API / Data: GraphQL, Apollo, NoSQL, RedisInfra & DevOps: AWS, Docker/Kubernetes, Terraform, GitHub Actions, CI/CD, monitoring with Prometheus & GrafanaFrontend: React, TailwindCSSCulture: Clean code, code reviews, test coverage, end-to-end ownership, pragmatic use of new techâ What You BringMust-have: Strong experience in backend engineering with TypeScript in production environments.Solid understanding of system architecture, microservices, and containerized infrastructure.Interest in Rust and motivation to upskill in a Web3/Rust-native ecosystem.Familiarity with modern DevOps tools and CI/CD practices.Excellent communication skills in both English and French.Proven ability to thrive in fast-paced, iterative environments with a high degree of autonomy.ð Bonus PointsPrior exposure to DeFi or blockchain technologies.Experience with protocol integrations or backend systems interacting with smart contracts.Understanding of high-availability systems and performance optimization.ð Why JoinWork on impactful Web3 infrastructure projects with real-world traction.Join a lean, collaborative team with deep technical experience and crypto-native culture.Enjoy flexible work hours, 2 remote days per week, and an agile work environment.Competitive compensation and benefits aligned with your seniority. jid30dffa8afr jit1147afr jpiy25afr