Protocol Engineer

As a Protocol Engineer at LayerZero Labs, you will work on the core infrastructure that underpins decentralized interoperability. You will design and implement core protocol components that operate across heterogeneous chains with rigorous security and performance constraints.

Responsibilities:

• Design and implement core protocol contracts and logic on both EVM and non-EVM chains (e.g., message validators, data availability mechanisms, proof verification).
• Collaborate with various teams to develop new system primitives, validate security assumptions, and improve protocol robustness.
• Own components across their lifecycle: architecture, implementation, testing, deployment, and iteration.
• Contribute to high-assurance engineering practices: formal verification, invariant testing, simulation frameworks, fuzzing, and audit readiness.
• Investigate emerging cryptographic techniques and novel designs to enhance trust minimization and scalability.
• Optimize for correctness and safety in gas-constrained environments, with an emphasis on upgradeability, modularity, and composability.
• Keep pace with changes across LayerZero-supported chains to ensure cross-chain compatibility and performance.

Requirements:

• Bachelor's degree in Computer Science or related field, or equivalent practical experience.
• Strong smart contract development experience in Solidity or equivalent languages, with a focus on correctness, modularity, and gas efficiency.
• Have built protocol-level infrastructure: bridges, interoperability layers, state sync systems, light clients, or equivalent.
• Write clear, well-tested, and secure code and have strong opinions on security models and upgradeability patterns.
• Familiar with distributed systems fundamentals and have good intuition around adversarial conditions in blockchain environments.
• Experience working with workflow engines.
• Previous experience with blockchain technologies, smart contracts, and decentralized finance is a strong plus.

The base salary for this position ranges from $120,000/year up to $250,000/year. Salary is based on a number of factors and may vary depending on job-related knowledge, skills, and experience. LayerZero is a total compensation company. Dependent on the position offered, equity, and other forms of compensation may be provided as part of a total compensation package, in addition to a full range of medical, financial, and/or other benefits.