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The role We are hiring a Blockchain Engineer to design and implement smart contracts and chain integrations. You will work closely with backend and product teams to ship secure, production-ready on-chain systems. This is a hands-on role focused on correctness, gas efficiency, and operational safety. What you'll do Design and implement smart contracts Integrate on-chain systems with backend and frontend services Write tests, deployment scripts, and upgrade paths Review contract security and operational risks Support indexing, events, and transaction monitoring Collaborate on token, custody, and market flows What we're looking for Must-have experience and skills for this role. 3+ years of software engineering experience Strong Solidity or equivalent smart contract experience Understanding of EVM fundamentals and common patterns Experience with Hardhat / Foundry (or similar) Ability to reason about security and edge cases Comfort collaborating with backend and product teams Nice to have Audit experience or formal verification exposure L2 networks (Polygon, Arbitrum, Optimism) ethers.js / web3.js integrations RWA, DeFi, or fintech product experience Tech stack Solidity Hardhat / Foundry Ethereum · L2s ethers.js Node.js PostgreSQL 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 Hiring process Application review Technical interview Final discussion How to apply We review every relevant profile. Keep it concise and concrete. Resume or LinkedIn GitHub profile or portfolio (preferred) Examples of relevant work you're proud of Apply with the button on this page. Find Jobs in Switzerland on Arbeitnow