Smart Contract Engineering Lead

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Requirements:

• 3+ years of experience in smart contract development, with deep expertise in Ethereum, EVM, and smart contract security
• Proficiency in smart contract development tools (Hardhat, Foundry, Truffle)
• Strong understanding of gas optimization, storage management, and Solidity design patterns
• Experience working with DeFi protocols, cross-chain solutions, and on-chain data structures
• Exposure to Rust smart contract development (Substrate/ Solana) or strong interest in learning
• Ability to conduct security audits, identify vulnerabilities, and implement fixes
• Experience in high-growth startups or agile development environments

Responsibilities:

• Lead the design, development, and optimisation of Solidity & Rust-based smart contracts for SQD’s blockchain infrastructure
• Conduct security audits and enforce best practices for contract security and performance
• Collaborate with the network team to integrate smart contracts into the broader system
• Build and maintain testing frameworks (unit, integration, fuzz testing) to ensure contract reliability
• Stay ahead of EVM upgrades, Solidity advancements, and emerging blockchain standards