Senior Software Engineer, API Products

📋 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.