Smart Contract Engineer (Protocol / DeFi)

Overview A fast-growing on-chain financial infrastructure company is building mission-critical DeFi protocols for enterprise adoption and is seeking hands-on Smart Contract Engineers to join its core protocol team. The team has shipped multiple decentralized primitives across lending markets, vaults, and other financial protocols. This role is for engineers who can research, design, and implement production-grade Solidity systems , not just write contracts in isolation. The Role You will work on the design and implementation of novel DeFi protocols, with a strong emphasis on lending, vaults, and capital efficiency . This is a deeply technical role with real ownership over protocol architecture, trade-off analysis, and security posture. The ideal candidate is fluent in DeFi mechanics, understands real-world protocol constraints, and has shipped main net Solidity code used by real users. Key Responsibilities Research and design new protocol mechanisms around vaults, lending markets, and other DeFi primitives Lead protocol design decisions, balancing trust assumptions, capital efficiency, and security Implement Solidity smart contracts and develop comprehensive test suites Maintain high standards for code quality, documentation, and security in an open-source environment What Were Looking For Candidates should demonstrate strong interest and experience in one or more of the following: DeFi yield strategies Tokenization Decentralized lending Under-collateralized and uncollateralized lending systems Required Experience & Skills Proven track record shipping production Solidity protocols on main net (not limited to hackathons or demos) Deep familiarity with lending and vault architectures (e.g., Compound-style, vault-based, or credit protocols) Solid understanding of AMMs, RFQs, aggregators, and cross-chain architectures Bonus Qualifications Participation in CTFs, gas optimization (gas golfing), or competitive hackathons Experience beyond Solidity, including rollups or blockchain infrastructure Active DeFi user, investor, or protocol participant Knowledge of node operations, rollup design, or zero-knowledge system