DeFi Engineer (Smart Contracts & Protocols)
Full-time or contract
,
Europe
What you’ll work on
Design and implement production-grade smart contracts for onchain lending, leverage, and execution primitives
Integrate and abstract lending protocols across multiple chains into a unified execution layer
Build and maintain safety checks that prevent unsafe states (e.g. liquidations, invalid positions)
Collaborate closely with backend and API engineers on end-to-end execution flows
Review protocol changes and assess integration risk as ecosystems evolve
What we’re looking for
Strong experience with Solidity and EVM-based systems
Deep understanding of DeFi primitives: lending, liquidation mechanics, interest rate models
Experience shipping and maintaining contracts in production environments
Strong intuition for risk, edge cases, and failure modes
Ability to reason about systems holistically, not just individual contracts
Nice to have
Experience with Aave, Compound, Morpho, or similar lending protocols
Familiarity with transaction simulation, fork testing, and invariant-based testing
Contributions to open-source DeFi projects