Smart Contract Engineer

Siza- Buso Consulting • Los Angeles, CA

3d

About The Position

The Client is looking for a Smart Contract Developer to join their core engineering team. In this hands-on role, you'll design, develop, and deploy secure smart contracts that power the protocol. You'll architect on-chain logic, optimize gas efficiency, ensure security best practices, and build the foundational infrastructure that enables institutional-grade DeFi operations. This is an opportunity to shape the core protocol layer of institutional DeFi, building robust, auditable smart contracts that handle significant liquidity flows across multiple chains. This is a high-impact role requiring deep technical expertise in blockchain development, a strong security mindset, strategic thinking, and a passion for delivering best-in-class DeFi solutions.

Requirements

• Experience 3+ years of experience developing and deploying production-ready smart contracts in Solidity.
• Proven track record of shipping secure, battle-tested contracts that handle significant value.
• Experience with DeFi protocols (AMMs, lending protocols, yield aggregators, etc.) is highly preferred.
• Familiarity with cross-chain protocols and bridge architectures is a plus.
• Expert-level proficiency in Solidity and deep understanding of the EVM.
• Strong knowledge of smart contract security best practices, common vulnerabilities (reentrancy, front-running, access control issues, etc.), and mitigation strategies.
• Proficiency with development frameworks such as Foundry and Hardhat.
• Experience with testing frameworks and tools (Foundry, Hardhat, Echidna, Slither, etc.).
• Familiarity with Web3 libraries (ethers.js, web3.js, viem) for contract interaction and testing.
• Understanding of gas optimization techniques and on-chain efficiency.
• Experience with upgrade patterns (proxy contracts, diamond pattern, etc.).
• Maniacal attention to detail and excellent ability to receive and internalize feedback.
• Clear communicator able to work with both technical and non-technical teams.
• Strong problem-solving abilities and comfort navigating complex systems.
• Adaptable and entrepreneurial mindset suited to early-stage environments.
• Desire to contribute professionally and personally as a member of a dynamic, collaborative, high-performing team.

Nice To Haves

• Knowledge of other blockchain ecosystems (L2s, alternative L1s) is a plus.
• Familiarity with Rust or other systems programming languages is beneficial but not required.
• Ideal for a junior & hungry developer with SC exp, ideally building vaults for digital assets.

What This Job Offers

• Career Level: Entry Level
• Education Level: No Education Listed