Job Description
We are at the forefront of the decentralized revolution. Quantum Chain Labs is seeking a visionary Senior Web3 Smart Contract Developer to build the next generation of decentralized applications (dApps). If you are passionate about blockchain technology, security, and scalability, we want to hear from you.
In this role, you will architect complex smart contracts for high-traffic DeFi protocols and NFT marketplaces. You will work in a fast-paced environment collaborating with world-class engineers to solve the hardest problems in distributed systems.
Why Join Us?
- Competitive salary and equity package.
- Flexible remote-first policy with a hub in San Francisco.
- Access to cutting-edge Web3 technologies.
- Professional development budget.
Responsibilities
- Design, develop, and audit secure smart contracts primarily in Solidity and Rust.
- Implement and optimize gas-efficient logic for high-volume DeFi protocols.
- Lead architectural reviews and code reviews to ensure security best practices.
- Integrate off-chain data sources (Oracle APIs) with on-chain logic.
- Mentor junior developers and contribute to the technical roadmap.
- Participate in bug bounty programs and security audits.
Qualifications
- 5+ years of professional software development experience.
- Deep understanding of blockchain architecture, consensus mechanisms, and cryptography.
- Proficiency in Solidity (Ethereum/EVM) and Rust.
- Experience with smart contract testing frameworks (Hardhat, Foundry, or Truffle).
- Strong knowledge of Web3 libraries (ethers.js, web3.js).
- Experience with Layer 2 solutions (Optimism, Arbitrum, zkSync).
- Excellent problem-solving skills and ability to work in a distributed team.