Full-Stack Engineer (Security)

Relay is a cross-chain payments protocol. The Full-Stack Engineer (Security) will build and operate production security systems, including wallet screening, MEV detection, and internal auditing tools, while partnering with product teams to deliver security features and improve detection and response. Responsibilities Own the service that screens wallet addresses before and during transactions: verdict quality, caching and rescreening behavior, latency, and uptimeRecommend and integrate risk vendors and data sources, and decide at which stage of a transaction (quote, deposit, fill, refund) and on which chains and address roles (sender, recipient, intermediary) each one appliesMake blocking decisions explainable: clear error codes and messages for integrators, and auditable reports of what was blocked and whyBuild the override and watchlist tooling around the service with caller authorization, confirmation steps, and an audit trailHandle partner and compliance requests about screening co