Senior 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.
🔧 Your Mission
* Architect 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.
ðŸ›ï¸ Tech Environment
* Core Stack: TypeScript (Node.js-based microservices), Rust (growing footprint)
* Web3 / Smart Contracts: Solidity (EVM), Hardhat, multi-chain deployments (ETH, BSC, Arbitrum, etc.)
* API / Data: GraphQL, Apollo, NoSQL, Redis
* Infra & DevOps: AWS, Docker/Kubernetes, Terraform, GitHub Actions, CI/CD, monitoring with Prometheus & Grafana
* Frontend: React, TailwindCSS
* Culture: Clean code, code reviews, test coverage, end-to-end ownership, pragmatic use of new tech
✅ What You Bring
* Must-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.
🌠Bonus Points
* Prior 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.
🚀 Why Join
* Work 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.
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