Smart Contract Developer

Smart Contract Engineer (DeFi) We're growing our on\-chain engineering team and looking for a Smart Contract Engineer who can take ownership of the protocols behind our decentralized finance products. In this role you'll design, ship, and maintain the contracts that hold user funds — so quality, security, and clarity of thought matter more than raw output. The Mission You'll be hands\-on with every layer of our smart contract stack: drafting the architecture, writing the Solidity, breaking it in tests, and pushing it to mainnet. Day\-to\-day you'll work alongside backend developers, product managers, and auditors to turn protocol ideas into reliable, gas\-aware, battle\-tested code. Your Day\-to\-Day * Architect and deliver smart contracts on Ethereum and other EVM chains, from spec to deployment * Implement and refine Solidity for lending, swaps, staking, tokens, and NFT modules * Build deep test coverage — unit, integration, fuzzing, invariants — and chase down every edge case * Lead internal security passes and drive contracts through external audits * Connect on\-chain logic to web and backend services with Ethers.js / Web3\.js * Squeeze gas costs and harden contracts using current best practices * Keep a close eye on the EVM ecosystem, rollups, and emerging DeFi designs * Write clean docs, review teammates' PRs, and raise the bar for the codebase Who You Are * 3\+ years shipping smart contracts that have handled real value * Fluent in Solidity, comfortable reading EVM bytecode and assembly when needed * Daily\-driver experience with Foundry or Hardhat, plus Ethers.js / Web3\.js * Strong working knowledge of protocols like Uniswap, Aave, and Compound — both how they work and why * Familiar with the standard vulnerability catalog (reentrancy, price oracle abuse, signature replay, MEV, etc.) and how to defend against it * Nice to have: experience on L2s such as Arbitrum, Optimism, Polygon, Base, or zkSync * Nice to have: Rust and time spent in the Solana ecosystem * Careful, detail\-driven, and skeptical of your own code in the best way * Genuinely interested in crypto, open protocols, and the future of finance The Package * Salary range $120,000–$200,000/year based on experience and location * 100% remote, work from wherever you're productive * Flexible hours and async\-friendly culture * Health, dental, and vision insurance * 401(k) with company match * Paid vacation and sick leave * Budget for courses, books, and conferences * Referral bonuses * A rapidly scaling, international team building serious Web3 infrastructure Pay: $115,000\.00 \- $175,000\.00 per year Benefits: * 401(k) * 401(k) matching * Flexible schedule * Health insurance * Paid time off * Professional development assistance Work Location: Remote