Blockchain Engineer

<h2>The role</h2><p>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.</p><h2>What you'll do</h2><ul><li><p>Design and implement smart contracts</p></li><li><p>Integrate on-chain systems with backend and frontend services</p></li><li><p>Write tests, deployment scripts, and upgrade paths</p></li><li><p>Review contract security and operational risks</p></li><li><p>Support indexing, events, and transaction monitoring</p></li><li><p>Collaborate on token, custody, and market flows</p></li></ul><h2>What we're looking for</h2><p>Must-have experience and skills for this role.</p><ul><li><p>3+ years of software engineering experience</p></li><li><p>Strong Solidity or equivalent smart contract experience</p></li><li><p>Understanding of EVM fundamentals and common patterns</p></li><li><p>Experience with Hardhat / Foundry (or similar)</p></li><li><p>Ability to reason about security and edge cases</p></li><li><p>Comfort collaborating with backend and product teams</p></li></ul><h2>Nice to have</h2><ul><li><p>Audit experience or formal verification exposure</p></li><li><p>L2 networks (Polygon, Arbitrum, Optimism)</p></li><li><p>ethers.js / web3.js integrations</p></li><li><p>RWA, DeFi, or fintech product experience</p></li></ul><h2>Tech stack</h2><p>Solidity</p><p>Hardhat / Foundry</p><p>Ethereum · L2s</p><p>ethers.js</p><p>Node.js</p><p>PostgreSQL</p><h2>Why join</h2><ul><li><p>Work on modern Web3, RWA, and digital products</p></li><li><p>High ownership and visible product impact</p></li><li><p>Close collaboration with engineering, product, and design</p></li><li><p>Fast-paced environment with real production systems</p></li><li><p>Remote-friendly across global time zones</p></li></ul><h2>Hiring process</h2><ul><li><p>Application review</p></li><li><p>Technical interview</p></li><li><p>Final discussion</p></li></ul><h2>How to apply</h2><p>We review every relevant profile. Keep it concise and concrete.</p><p>Resume or LinkedIn</p><p>GitHub profile or portfolio (preferred)</p><p>Examples of relevant work you're proud of</p><p>Apply with the button on this page.</p><p>Find <a href="https://www.arbeitnow.ch">Jobs in Switzerland</a> on Arbeitnow</a>