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SENIOR WEB3 DEVELOPER

4 weeks ago

Bengaluru India Grayson Talent Full time

Job Description We are seeking a highly skilled Senior Web3 Developer with deep expertise in blockchain protocols, smart contract development, and security practices. The ideal candidate will have hands-on experience across multiple chains and ecosystems, including Aptos, Arbitrum, OKX, Bitcoin Taproot, and strong knowledge of Layer 1 and Layer 2 networks. This role requires proficiency in Solidity and Move for smart contracts, advanced knowledge of bridging and interoperability, and a strong understanding of security threats and mitigation strategies in DeFi. Key Responsibilities Smart Contract Development & Deployment - Design, develop, and deploy secure smart contracts using Solidity and Move (.move). - Implement cross-chain functionality, bridges, and interoperability solutions. - Optimize smart contracts for gas efficiency, scalability, and security. Blockchain Infrastructure - Set up, run, and maintain nodes and staking environments across multiple blockchains (L1 & L2). - Contribute to protocol integration with Aptos, Arbitrum, OKX, BTC Taproot, and other ecosystems. Security & Auditing - Conduct in-depth smart contract audits, both manual and with tools (e.g., Slither, MythX, Echidna, Foundry). - Identify and mitigate vulnerabilities such as diamond attacks, civil attacks, sandwich attacks, MBV (Miner/Maximal Extractable Value) and other exploits. - Implement best practices for contract upgradability and secure protocol design. Zero-Knowledge Proofs & Cryptography - Develop and integrate ZK-proof systems for privacy-preserving transactions. - Collaborate with researchers and engineers on novel cryptographic solutions. Collaboration & Documentation - Work closely with product, security, and research teams to deliver robust blockchain solutions. - Create detailed technical documentation and contribute to internal knowledge sharing. Skills & Experience - 8+ years in software development, including 5+ years in blockchain development. - Programming Languages: Solidity, Move (.move), Rust, JavaScript/TypeScript, Python (preferred). - Blockchain Expertise: Aptos, Arbitrum, OKX, BTC Taproot, Ethereum, Layer 1 & Layer 2 solutions. - Smart Contracts & Security: Strong grasp of bridging, contract patterns, and vulnerabilities (reentrancy, diamond, sandwich, MBV, etc.). - Auditing Tools: Familiarity with tools like Slither, MythX, Foundry, Tenderly, Echidna, Certora. - Infrastructure: Node setup, validator operation, staking mechanisms, RPC management. - Cryptography: Understanding of ZKPs, elliptic curve cryptography, and consensus mechanisms. - Problem Solving: Ability to diagnose complex blockchain issues and propose scalable solutions. Qualifications - Bachelor's degree in Computer Science, Software Engineering, or related field (Master's preferred). - Prior contributions to open-source blockchain projects. - Experience in building or auditing DeFi protocols. - Familiarity with bridging protocols (e.g., Wormhole, LayerZero). - Experience with rollups, sidechains, and modular blockchain design. - Active participation in Web3 communities and hackathons.