Hardhat Jobs

Smart Contract Lead  

About SQD.AI

SQD offers a suite of development tools and products built on top of a state-of-the-art decentralised data lake. Developers can use custom indexers and data pipelines to serve data to applications across the Decentralised Finance, Metaverse, Social, and NFT verticals.

We are looking for a skilled senior smart contract engineer to join the network team and help actualise our long term vision of being the world's first emergent database network. 

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.

Benefits:

• Competitive salary & leading liquid token comp in a rapidly growing Web3 company.

• Opportunity to work on cutting-edge blockchain technologies with a world-class team.

• Remote-first work environment with flexible hours.

• A fast-moving, high-impact startup culture where your contributions directly shape the company’s future.