LI.FI
API • Crypto • Fintech
LI. FI is a platform that provides developers with a single API to facilitate swaps, bridges, and zaps across major blockchains and protocols. The company aggregates decentralized exchange (DEX) aggregators, bridges, and intent systems to streamline trading across these platforms, thereby saving developers extensive hours of work. With a focus on security, LI. FI collaborates with trusted organizations for risk assessment and mitigation while offering monetization features like flexible fee structures. LI. FI supports trading across over 20 chains and provides customizable widgets for developers aiming for quick go-to-market solutions. The platform emphasizes DeFi infrastructure to accelerate crypto adoption.
Mid/Senior Smart Contract Engineer
Job not on LinkedIn
November 19
LI.FI
API • Crypto • Fintech
LI. FI is a platform that provides developers with a single API to facilitate swaps, bridges, and zaps across major blockchains and protocols. The company aggregates decentralized exchange (DEX) aggregators, bridges, and intent systems to streamline trading across these platforms, thereby saving developers extensive hours of work. With a focus on security, LI. FI collaborates with trusted organizations for risk assessment and mitigation while offering monetization features like flexible fee structures. LI. FI supports trading across over 20 chains and provides customizable widgets for developers aiming for quick go-to-market solutions. The platform emphasizes DeFi infrastructure to accelerate crypto adoption.
📋 Description
• Contribute to development and configuration of our 1200+ production smart contracts, ensuring security and optimal (gas) performance • Collaborate with external auditors, resolve audit findings and file audit reports to ensure full audit traceability of our codebase • Create and improve scripts (typescript and bash) that help us to get our work done most efficiently • Deploy staging and production contracts to many chains simultaneously, ensuring contracts are verified • Create, review and sign multisig proposals in production environment • Maintain and improve our CI/CD pipeline on Github • Review and respond to bug bounty submissions • Write demo scripts that showcase how our contracts function and have to be interacted with • Help our customer support team to analyze failing transactions and provide easy-to-digest explanations for our partners and clients • Take an active role in our smart contract chapter (e.g. with knowledge sharing presentations) • Bring your own ideas and help us to grow every single day
🎯 Requirements
• At least 5 years of software development experience with a focus on Solidity (at least 3, ideally 5 years) and solid experience in TypeScript (at least 3 years) • Proficiency in YUL/Assembly and experience deploying smart contracts to multiple EVM networks • Meticulous and quality-driven, you ensure high-quality outputs in all aspects of your work • Strong written and verbal communication skills for effective interaction within a cross-cultural team and with external stakeholders • Experience working with/for a major DeFi protocol, especially a bridge or cross-chain protocol is a plus • Contributions to Ethereum Improvement Proposals (EIPs) or other public blockchain initiatives are a plus • A degree in computer science or a related field is a plus
🏖️ Benefits
• Annual team offsites (Thailand in 2023 and Vietnam in 2024 were a blast, Marrakech in March 2025 was blast-ier; let’s see what happens in 2026!) • 30 days of PTO • Flexible remote days • Flexible working hours • Equity participation from day 1 • Entitlement to work computer (choice of equipment) • An annual 1,000€ personal development budget once you have worked 6+ months (pro-rated the first year) • A one-time 1,000€ remote budget to use on coworking, office setup, etc.
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