Protocol Engineer

New York, United States | Posted on 08/04/2026

Protocol Engineer for a New York City crypto payments infrastructure company. Onsite in NYC. One opening. Compensation $120,000-$300,000 plus equity, leveled L1-L4 by experience. Design, build, and ship protocol-level smart contract systems powering production payments infrastructure. Own contract architecture, implementation, testing, auditing readiness, and mainnet deployment for systems that move real value. Requirements: production Solidity/EVM smart contract development with contracts deployed to mainnet; protocol-level ownership rather than integration-only work; strong grasp of smart contract security patterns, testing frameworks, and gas optimization; experience with DeFi primitives, payments flows, or token standards; ability to reason about adversarial conditions and economic attack surfaces. Verification of public code, audits, or deployed mainnet work will be part of the process. H-1B transfer support available.