Job Title

Role OverviewAs anSDE-3 Blockchain Developer , you will lead design and development of decentralized applications, smart contracts, and core blockchain modules across various protocols (EVM-compatible and non-EVM). You will set engineering standards, lead internal reviews, and collaborate with product, design, and DevSecOps to ship scalable, secure blockchain applications. Key ResponsibilitiesArchitect and developsmart contracts , DApps, and on-chain protocols using Solidity, Vyper, or Move. Design and optimizecross-chain and Layer-2 interactions(e.g., Polygon, Arbitrum, Base). Lead code reviews and technical audits of smart contracts and off-chain components. Implement and enforcemodular and upgradeable contract designs(using proxies, libraries, etc.). Collaborate with front-end, backend, and DevOps teams on full-stack decentralized applications. Integrate with wallets (e.g., MetaMask, WalletConnect) and third-party APIs (e.g., Fireblocks, Chainlink, The Graph). Mentor SDE-1/2 developers and drive knowledge-sharing within the team. Stay up to date with EIPs, protocol upgrades, and Web3 security patterns. Required Skills6+ years of software engineering experience, with3+ years in blockchain/Web3 . Strong expertise inSolidityand EVM-compatible chains (Ethereum, BNB Chain, Polygon). Familiar with smart contract development frameworks:Hardhat, Foundry, Truffle . In-depth understanding of blockchain fundamentals:consensus mechanisms, gas optimization, ABI encoding, re-entrancy, storage layout . Experience working withNode.js, TypeScript , and backend API design (REST/GraphQL). Strong understanding ofsecurity best practices : smart contract auditing, attack surfaces, and secure upgrade patterns. Familiarity with blockchain indexers and event listening:The Graph, Moralis, Alchemy SDK . Strong Git/GitHub workflows, CI/CD for smart contracts, and testing libraries (e.g., Chai, Mocha, Waffle). Preferred QualificationsExperience withzk-rollups (zkSync, StarkNet)ornon-EVM protocols (Solana, Sui, Aptos) . Contributions to open-source Web3 projects or EIPs. Prior experience incrypto exchanges ,DeFi ,stablecoin , orNFT protocols . Familiarity withFireblocks, Gnosis Safe, multisig flows , or custody integrations. Knowledge ofDocker, Kubernetes , and on-chain/off-chain orchestration.