Staff Protocol Engineer

fomo Labs • New York, NY

1d • $300,000 - $400,000 • Onsite

About The Position

fomo is hiring a Staff Protocol Engineer to own the systems that make onchain trading fast, safe, and reliable for millions of users. The role spans smart contracts that settle trades and offchain services that route, trigger, and track them. The engineer will work closely with the backend team and founders and will have meaningful ownership of the technical direction of fomo’s onchain stack. This is an in-person role based in Manhattan, New York City.

Requirements

• Staff+ level engineering experience, with at least 6 years of experience and the ability to plan and execute autonomously.
• Deep understanding of the EVM and production experience writing and shipping smart contracts in Solidity.
• Experience building offchain systems that interact with contracts at scale, such as execution bots, relayers, solvers, keepers, or indexers.
• Strong understanding of DeFi primitives, including AMMs, aggregators, and MEV, and how transactions land onchain.

Nice To Haves

• Experience with cross-chain infrastructure such as bridges, intents, or solver networks.
• Experience with Solana or other non-EVM chains.
• Familiarity with security tooling such as Foundry, Slither, Echidna, or formal verification, and experience working through external audits.
• Rust or Go experience, or familiarity with client internals such as geth or reth.
• Active onchain trader; engineers use the app to understand what to improve, and protocol engineers are encouraged to think like the users they build for.

Responsibilities

• Design and ship smart contracts for trade execution, prioritizing security, simplicity, and gas efficiency.
• Build cross-chain execution, including solver- and intent-based routing, to help users get the best fill regardless of which chain a token is on.
• Own trigger execution for limit orders, stop losses, and other automated trades, ensuring they execute correctly and on time under heavy market load.
• Design systems for indexing and serving onchain data accurately and with low latency for portfolios, PnL, and the social feed.
• Debug production issues at the EVM level, including reverted transactions, gas spikes, and chain reorgs.
• Set protocol security standards through design reviews, testing, and collaboration with external auditors.

Benefits

• Competitive cash compensation and equity.
• Comprehensive health insurance, including medical, dental, and vision coverage for employees and dependents.
• Tax-savings benefits such as HSAs and FSAs.
• 401(k) with match.
• Group term life insurance.
• Flexible time off.
• Annual company offsites.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed