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DeFi Developer Co-Lead (Solidity)

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UnUniFi

UnUniFi operates an asset-management platform centered on its Yield Aggregator (UYA), which combines DeFi and CeFi yield strategies across blockchains. It supports customizable vaults and strategies, as well as lending and borrowing against NFT-based on-chain collateral.

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About UnUniFi

UnUniFi is a blockchain ecosystem and asset-management platform powered by the UnUniFi Yield Aggregator (UYA). UYA acts as a cross-chain hub for managing on-chain assets, offering integrated DeFi and CeFi strategies, customizable vaults, and collateralized lending and borrowing for NFT-based assets. The platform also works with DeFi protocols, trusted custodians, institutional lenders, and borrowers seeking access to cross-chain liquidity and strategy deployment.

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Skills

About the Role

You will design and implement Solidity smart contracts and overall protocol architecture for a complex DeFi system. You will build, test, and deploy production-grade contracts to mainnet, integrate OpenZeppelin libraries and modern DeFi primitives, and implement multichain and oracle integrations. You will follow DeFi security best practices, prepare code for audits, and iterate on protocol design to meet production and risk requirements. You may work full-time, part-time, or on a project basis and will collaborate closely with other architects and auditors.

Requirements

  • Deployed DeFi Solidity contracts on mainnet within the last 12 months
  • Knowledge of OpenZeppelin libraries
  • Understanding of modern DeFi primitives
  • System design experience with DeFi protocols such as CDP and lending
  • Experience with DeFi security and best practices
  • Prior experience with at least one of multichain projects mission critical oracle yield aggregators CDP or algorithmic stablecoins or lending protocols
  • Deep knowledge of Solidity EVM and opcode and ability to solve advanced Solidity challenges
  • Willingness to provide two mainnet smart contract addresses you developed

Responsibilities

  • Design protocol architecture
  • Develop Solidity smart contracts
  • Integrate OpenZeppelin libraries and DeFi primitives
  • Implement oracle and risk systems
  • Build multichain support
  • Deploy contracts to mainnet
  • Prepare code for audits and security reviews
  • Follow modern DeFi best practices

Benefits

  • Equity allocation
  • Remote work
  • Flexible engagement formats including full-time part-time and project based