About Our Client

Our client is building the first decentralized finance (DeFi) protocol dedicated to tokenized risk, enabling a peer-to-peer marketplace where users can price, hedge, and trade risk for on-chain assets. They focus on creating secure, capital-efficient financial primitives and have raised over $2M from OrangeDAO, a16z/CSX, Steakhouse, and others, along with an additional $5M seed round from top-tier investors and strategic partners. The founding team consists of experienced serial entrepreneurs.

About The Role

We are seeking a senior smart contract engineer to design, implement, and maintain Solidity smart contracts, including vaults, liquidations, oracle integrations, interest-rate logic, and governance modules. This person will own security end-to-end by writing comprehensive tests, leading internal reviews, and managing external audits from scoping and vendor coordination through to fixes and retrospectives. They will optimize contracts for gas efficiency and safety, ensure secure upgrade and migration paths, and collaborate closely with Product, Protocol Research, and Full-Stack teams in a global remote-first environment to turn requirements into deployable code. The role also includes contributing to documentation, running incident-response exercises, improving developer tooling and CI for testing, fuzzing, and analysis, and ultimately growing into ownership of contract architecture and development processes such as review standards, threat-model templates, and release gates.

Requirements

• 3–7 years of hands-on experience developing and deploying Solidity smart contracts within DeFi, including areas such as lending protocols, AMMs, liquidations, oracle integrations, interest models, and governance.
• Strong security-first approach with familiarity across common vulnerabilities and MEV vectors, plus the ability to interpret audit findings and create proof-of-concept tests.
• Proven track record overseeing the full audit lifecycle from initial scoping through remediation and final sign-off.
• Comfortable contributing within a global, remote-first environment with strong asynchronous communication skills.
• Proficiency with tools such as Foundry or Hardhat, security analyzers like Slither, echidna, or halmos, and experience with fuzzing, differential testing, and gas optimization.
• Clear evidence of real-world impact, demonstrated through shipped protocols, contributions to EIPs or ERC standards, measurable on-chain work, or well-regarded open-source repositories.