Senior Software Engineer, API Products

About this role

📋 Description Build new APIs and trading products, from researching the problem and designing the architecture to Maintain and extend existing APIs, including support for new chains, bridges and customer-requested Keep APIs fast and reliable as traffic grows, and participate in the on-call rotation. Investigate failed trades and stuck transfers using logs, traces and onchain data, and resolve the Work with product, legal and GTM, turning business and compliance needs into technical decisions.

Write design documents for work and review teammates' designs and pull requests. 🎯 Requirements 6+ years of backend engineering experience, including at least 2 years in DeFi at a trading app Senior or Lead Engineer with a track record of owning complex projects end to end. Built and maintained developer-facing APIs. Deep onchain knowledge, especially EVM: how transactions work, including calldata, contract Strong system design experience for production-scale backend services.

Clear communicator, comfortable explaining technical tradeoffs to non-engineers. 🎁 Benefits The base salary range for this position is USD $150,000 - $230,000 + equity + ZRX tokens + benefits. Comprehensive insurance (medical/dental/vision/life/disability) for U.S.-based employees — 100% of 401k and FSA for U.S.-based employees. Monthly mobile phone bill, wellness, and pre-tax transportation expense. Covered mental health benefits (included professional therapy sessions).

A supportive remote environment.

Source listing: empllo_remote