Helped launch a distributed rate limiting system that can coordinate across hundreds of thousands of servers. Developed a client library used by teams across Amazon to protect their Rust, Java, Node, Go, and Python applications against high load. Coached several engineers to maintain and support the library.

Owned full-stack images and news features in a vertical team structure, then later owned shared API layers in a horizontal team structure. Migrated systems from legacy Perl to service-oriented Java to serverless TypeScript.

Delivered key functionality allowing IMDbPro subscribers to receive push notifications when people or titles they select are in the news. Designed and built GraphQL infrastructure at the center of a director-level effort to modernize the architecture of IMDb's consumer website and mobile apps.

Improved metrics infrastructure for an open data platform. Enhanced customer-facing analytics dashboards. Prototyped an event-based architecture for metrics.

Developed web applications for computer science education. Implemented distributed, sandboxed processing of student code submissions. Conducted research on student programming behavior. Administered production Linux servers.