Blockchain Lead

About the role

p>Lead Blockchain Developer /p> p> strong>Location: /strong> Hybrid strong>Employment Type: /strong> Full-time strong>Experience Required: /strong> 10+ years (software engineering), with 5+ years in blockchain/Web3 development Position: Multiple /p> p> br> /p> p>About the Role /p> p>We 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. /p> p> br> /p> p>Key Responsibilities /p> ul> li>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. /li> li>Lead the full development lifecycle: technical design, implementation, code review, testing, audits, deployment, and post-launch monitoring. /li> li>Mentor and manage a team of blockchain developers, setting coding standards, conducting code reviews, and guiding career growth. /li> li>Collaborate with product managers, designers, and backend/frontend engineers to translate business requirements into robust on-chain and off-chain solutions. /li> li>Own smart contract security practices, including coordinating third-party audits, running internal threat modeling, and implementing fixes for identified vulnerabilities. /li> li>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. /li> li>Design and oversee upgrade patterns, multisig/governance structures, and key management practices for deployed contracts. /li> li>Establish CI/CD pipelines, testing frameworks (unit, integration, fuzz/invariant testing), and monitoring for on-chain systems. /li> li>Represent the engineering team in technical discussions with auditors, partners, and external stakeholders. /li> /ul> p>Required Qualifications /p> ul> li>10+ years of professional software development experience, including 5+ years building production Solidity smart contracts on Ethereum or EVM-compatible chains. /li> li>Proven track record leading or architecting blockchain projects from design through mainnet launch. /li> li>Deep understanding of EVM internals, gas optimization, and common smart contract vulnerabilities (reentrancy, integer overflow, access control, oracle manipulation, etc.). /li> li>Hands-on experience with Solidity development frameworks such as Hardhat, Foundry, or Truffle, and testing/fuzzing tools. /li> li>Strong knowledge of token standards (ERC-20, ERC-721, ERC-1155), DeFi primitives, and/or DAO governance mechanisms, depending on product focus. /li> li>Experience with smart contract security practices, including working alongside auditors and remediating findings. /li> li>Solid background in at least one general-purpose language (TypeScript, JavaScript, Go, Rust, or Python) for building supporting infrastructure and tooling. /li> li>Experience leading or mentoring engineers, with the ability to set technical direction and review others code constructively. /li> li>Familiarity with Web3 libraries (ethers.js, web3.js, viem) and node infrastructure (Infura, Alchemy, or self-hosted nodes). /li> /ul> p>Preferred Qualifications /p> ul> li>Experience with Layer 2 solutions (Optimism, Arbitrum, Base, zkSync) or cross-chain bridging. /li> li>Contributions to open-source blockchain projects or published smart contract audits. /li> li>Familiarity with formal verification tools (Certora, Slither, MythX). /li> li>Experience with on-chain governance, multisig frameworks (Gnosis Safe), or DAO tooling. /li> li>Background in financial systems, DeFi protocols, or regulatory considerations around digital assets. /li> /ul> p>What We Offer /p> ul> li>Competitive salary and equity package /li> li>Comprehensive health, dental, and vision coverage /li> li>Flexible hybrid work schedule /li> li>Professional development budget and conference attendance /li> li>A high-ownership role shaping the technical direction of our blockchain products /li> /ul> p> br> /p> p> br> /p> p>How to Apply /p> p>Linkedin profile is mandatory. /p> p>USA, Canada or Europe Candidates are preffered. /p> p>Interested candidates should submit a resume along with links to relevant GitHub repositories, deployed contracts, or audit reports demonstrating prior work within next 20 days through careertbss@gmail.com /p>

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