Smart Contract Engineer
Paxos Labs is the financial utility stack for digital assets, enabling platforms to embed yield, borrowing, and branded stablecoins into their user experience. It serves platforms and enterprises looking to activate and monetize digital assets natively, extending Paxos's regulated infrastructure onchain.
Funding
About Paxos Labs
Paxos Labs provides a complete stack to activate digital asset utility and monetization on client platforms through three core modules: Mint (branded stablecoin issuance, allowing platforms to issue, manage, and scale fully backed branded stablecoins native to their ecosystem), Earn (embedded yield infrastructure enabling users to put idle assets to work and access savings rates on dollar and stablecoin balances), and Borrow (embedded, transparent, risk-controlled credit markets integrated directly into platforms). The company emphasizes full economic control for its clients—platforms keep the brand, user experience, and economics while Paxos Labs provides the infrastructure—along with institutional trust derived from Paxos's regulated digital asset infrastructure, and speed to market with integrations that can go live in weeks. Paxos Labs primarily serves platform businesses seeking to embed onchain financial products such as stablecoins, yield, and credit directly into their offerings, and is backed by investors including Blockchain Capital, Maelstrom, Robot Ventures, and Uniswap.
Skills
About the Role
You will help scale Paxos Labs's DeFi protocol infrastructure capabilities by joining an experienced team of developers who have shipped multiple decentralized primitives from lending markets to vaults. You'll not only develop but also research and apply extensive knowledge across DeFi to build mission critical software that brings DeFi to the biggest enterprises in the world. You'll be expected to bring deep interest and expertise in DeFi yield strategies, tokenization, decentralized lending, and under/un-collateralized lending, while leading protocol design decisions and maintaining exemplary organizational and security standards.
Requirements
- Deep knowledge in Lending codebases—Compound, Aave, Morpho Blue, MakerDAO, Euler, EVC, Liquity, Pendle
- Deep knowledge in Vaults codebases—Yearn V3, Metamorpho / Morpho V2, BoringVaults, ERC7540, Centrifuge, etc.
- Familiarity with AMMs or solver networks—CoW Protocol, UniswapX, 1inch, Uniswap V3/V4
- Familiarity with RFQs—Hashflow, 1inch RFQ, or off-chain exchange systems (including TradFi)
- Experience shipping production Solidity smart contract code to mainnet
- Experience developing and maintaining tests for smart contract code i.e. unit testing, fork testing, fuzzing, invariant testing (Foundry invariants or Echidna)
- Experience with smart contract development tools such as Foundry (preferred) or Hardhat
- Familiarity with other smart contract development languages and frameworks such as Vyper, Rust, Cairo, or Cosmwasm
- Experience as an active degen / investor / user in these DeFi protocols
Responsibilities
- Research and design novel protocol mechanisms around vaults, lending, and other DeFi primitives
- Lead protocol design decision making considering tradeoffs across trust assumptions and efficiency
- Develop solidity contracts and produce comprehensive test suites for the protocol
- Maintain exemplary organizational and security standards for an open source codebase