Backend Engineer

<h2>The role</h2><p>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.</p><h2>What you'll do</h2><p>Build and maintain backend services in one or more of: Node.js, Rust, Go, Java, Python, Ruby</p><p>Design REST and/or GraphQL APIs</p><p>Model data and own PostgreSQL / Redis (or equivalent) usage</p><p>Integrate blockchain APIs, wallets, and external services</p><p>Implement auth, permissions, and operational controls</p><p>Write tests, improve observability, and participate in reviews</p><p>Ship production-ready services with CI/CD</p><h2>What we're looking for</h2><p>Must-have experience and skills for this role.</p><p>3+ years of backend engineering experience</p><p>Strong proficiency in at least one of: Node.js/TypeScript, Rust, Go, Java, Python, or Ruby</p><p>Experience with relational databases (PostgreSQL preferred) and caching</p><p>Solid understanding of REST APIs and system design basics</p><p>Experience integrating external APIs or microservices</p><p>Strong coding fundamentals and production debugging skills</p><h2>Nice to have</h2><p>Proficiency across multiple backend languages</p><p>Web3 integrations (ethers.js, smart contract APIs, chain clients)</p><p>Event-driven or distributed systems experience</p><p>AWS / GCP familiarity</p><p>Fintech or consulting experience</p><h2>Tech stack</h2><p>Node.js · TypeScript</p><p>Rust</p><p>Go</p><p>Java</p><p>Python</p><p>Ruby</p><p>PostgreSQL · Redis</p><p>Docker · AWS / GCP</p><h2>Why join</h2><p>Work on modern Web3, RWA, and digital products</p><p>High ownership and visible product impact</p><p>Close collaboration with engineering, product, and design</p><p>Fast-paced environment with real production systems</p><p>Remote-friendly across global time zones</p><h2>What success looks like</h2><p>Stable APIs in production</p><p>Clear data models and service boundaries</p><p>Reliable integrations with blockchain and third-party systems</p><p>Low operational noise and strong code quality</p><h2>Hiring process</h2><p>Application review</p><p>Technical discussion (backend + system design)</p><p>Final discussion</p><p>Find <a href="https://www.arbeitnow.ch">Jobs in Switzerland</a> on Arbeitnow</a>