Blockchain Developer / Smart Contract Engineer

Responsibilities

• Design, build, and maintain smart contracts for DeFi and blockchain applications.
• Write secure, clean, gas-efficient, and maintainable Solidity code.
• Develop and maintain automated tests using Foundry, Hardhat, Anchor, or similar frameworks.
• Review smart contracts for security vulnerabilities, bugs, edge cases, and protocol-level risks.
• Analyse and mitigate risks related to flash loans, oracle manipulation, MEV, governance attacks, and other DeFi threat vectors.
• Use security and analysis tools such as Slither, Mythril, Echidna, Certora, Tenderly, or similar platforms.
• Support audits, bug fixes, secure deployments, and post-deployment monitoring.
• Optimise gas usage, storage layout, and contract performance.
• Document technical decisions, protocol assumptions, and security considerations.

Requirements

• Strong experience with Solidity and EVM-based smart contracts.
• Hands-on experience with Foundry and/or Hardhat.
• Good understanding of Ethereum, gas optimisation, storage layout, events, and upgradeable contract patterns.
• Knowledge of DeFi concepts, including token standards, staking, lending, AMMs, bridges, vaults, and governance.
• Ability to write secure, reliable, and maintainable smart contract code.
• Experience testing, debugging, and reviewing smart contracts.
• Understanding of common smart contract vulnerabilities, including reentrancy, access control issues, oracle risks, precision errors, and front-running.
• Familiarity with OpenZeppelin libraries and proxy patterns.
• Strong attention to detail, ownership, and clear communication skills.

Nice to Have