Blockchain Lead

Lead Blockchain DeveloperLocation: Hybrid Employment Type: Full-time Experience Required: 10+ years (software engineering), with 5+ years in blockchain/Web3 development Position: MultipleAbout the RoleWe're looking for a Lead Blockchain Developer to drive the architecture, security, and delivery of our Ethereum-based smart contract systems and decentralized applications. This is a hands-on technical leadership role: you'll write and review production Solidity code, set engineering standards, and mentor a team of blockchain engineers while partnering closely with product, security, and infrastructure stakeholders. You'll own technical decisions from protocol design through mainnet deployment and ongoing maintenance.Key Responsibilities Architect, design, and lead development of smart contracts and on-chain protocols on Ethereum and EVM-compatible chains, ensuring scalability, gas efficiency, and security best practices. Lead the full development lifecycle: technical design, implementation, code review, testing, audits, deployment, and post-launch monitoring. Mentor and manage a team of blockchain developers, setting coding standards, conducting code reviews, and guiding career growth. Collaborate with product managers, designers, and backend/frontend engineers to translate business requirements into robust on-chain and off-chain solutions. Own smart contract security practices, including coordinating third-party audits, running internal threat modeling, and implementing fixes for identified vulnerabilities. Evaluate and integrate relevant standards and tooling (e.g., ERC-20/721/1155, OpenZeppelin, Hardhat/Foundry, The Graph) and stay current on EVM upgrades and Ethereum roadmap changes. Design and oversee upgrade patterns, multisig/governance structures, and key management practices for deployed contracts. Establish CI/CD pipelines, testing frameworks (unit, integration, fuzz/invariant testing), and monitoring for on-chain systems. Represent the engineering team in technical discussions with auditors, partners, and external stakeholders. Required Qualifications 10+ years of professional software development experience, including 5+ years building production Solidity smart contracts on Ethereum or EVM-compatible chains. Proven track record leading or architecting blockchain projects from design through mainnet launch. Deep understanding of EVM internals, gas optimization, and common smart contract vulnerabilities (reentrancy, integer overflow, access control, oracle manipulation, etc.). Hands-on experience with Solidity development frameworks such as Hardhat, Foundry, or Truffle, and testing/fuzzing tools. Strong knowledge of token standards (ERC-20, ERC-721, ERC-1155), DeFi primitives, and/or DAO governance mechanisms, depending on product focus. Experience with smart contract security practices, including working alongside auditors and remediating findings. Solid background in at least one general-purpose language (TypeScript, JavaScript, Go, Rust, or Python) for building supporting infrastructure and tooling. Experience leading or mentoring engineers, with the ability to set technical direction and review others' code constructively. Familiarity with Web3 libraries (ethers.js, web3.js, viem) and node infrastructure (Infura, Alchemy, or self-hosted nodes). Preferred Qualifications Experience with Layer 2 solutions (Optimism, Arbitrum, Base, zkSync) or cross-chain bridging. Contributions to open-source blockchain projects or published smart contract audits. Familiarity with formal verification tools (Certora, Slither, MythX). Experience with on-chain governance, multisig frameworks (Gnosis Safe), or DAO tooling. Background in financial systems, DeFi protocols, or regulatory considerations around digital assets. What We Offer Competitive salary and equity package Comprehensive health, dental, and vision coverage Flexible hybrid work schedule Professional development budget and conference attendance A high-ownership role shapi...