Design, implement, and optimize Solidity-based smart contracts for projects related to the protocol, focusing on security, efficiency, and maintainability.
Provide technical guidance and design feedback for external developers building on the protocol and Unichain, including hook developers and DeFi projects.
Explore and prototype new DeFi primitives, trading mechanisms, and smart contract architectures to expand the protocol’s capabilities.
Participate in design sessions and code reviews, ensuring high standards in code quality, security, and organization.
Implement unit tests, fuzz testing, and gas optimizations to ensure smart contract reliability and performance.
As a Protocol Engineer, the candidate may work on:
Hooks and reference implementations for the protocol's latest version
Experimental swapping UX designs
Indexers and graph traversal algorithms
Composable DeFi legos
SDK abstractions and developer tooling
Periphery integrations such as liquidity management tools and swap-and-add functionalities

Strong understanding of DeFi patterns and smart contract architecture
At least two years of experience writing complex Solidity smart contracts with an emphasis on readability, maintainability, and security
Proficiency with Foundry, including cheatcodes, foundry.toml, and script execution
Experience with unit testing and fuzz testing for smart contract security
Confidence using Git and managing version control in a collaborative engineering environment
Ability to design clean abstractions and reusable smart contract components
Familiarity with the protocol's latest version contracts and related DeFi protocols
Nice to Haves:
Experience with Yul and low-level opcodes for gas-efficient smart contract development
Knowledge of gas optimization techniques
Experience with invariant testing for smart contract correctness
Public speaking experience for developer outreach and technical presentations
Familiarity with TypeScript for SDK and front-end integrations

Protocol Engineer

Key skills