Backend Engineer

The role We are hiring a Backend Engineer to design, build, and maintain scalable backend services. You will own APIs, data models, and integrations with blockchain and third-party systems. Stack is not limited to Node — strong engineers in Rust, Go, Java, Python, or Ruby are welcome. This is a hands-on role focused on reliability, security, and production readiness. What you'll do Build and maintain backend services in one or more of: Node.js, Rust, Go, Java, Python, Ruby Design REST and/or GraphQL APIs Model data and own PostgreSQL / Redis (or equivalent) usage Integrate blockchain APIs, wallets, and external services Implement auth, permissions, and operational controls Write tests, improve observability, and participate in reviews Ship production-ready services with CI/CD What we're looking for Must-have experience and skills for this role. 3+ years of backend engineering experience Strong proficiency in at least one of: Node.js/TypeScript, Rust, Go, Java, Python, or Ruby Experience with relational databases (PostgreSQL preferred) and caching Solid understanding of REST APIs and system design basics Experience integrating external APIs or microservices Strong coding fundamentals and production debugging skills Nice to have Proficiency across multiple backend languages Web3 integrations (ethers.js, smart contract APIs, chain clients) Event-driven or distributed systems experience AWS / GCP familiarity Fintech or consulting experience Tech stack Node.js · TypeScript Rust Go Java Python Ruby PostgreSQL · Redis Docker · AWS / GCP Why join Work on modern Web3, RWA, and digital products High ownership and visible product impact Close collaboration with engineering, product, and design Fast-paced environment with real production systems Remote-friendly across global time zones What success looks like Stable APIs in production Clear data models and service boundaries Reliable integrations with blockchain and third-party systems Low operational noise and strong code quality Hiring process Application review Technical discussion (backend + system design) Final discussion Find Jobs in Switzerland on Arbeitnow