Build and ship Copilot Shopping experiences end-to-end, with a solid emphasis on frontend quality (UX polish, accessibility, performance, reliability). Work across the full architecture: client (web/mobile), services/APIs, data contracts, telemetry/experimentation, and operational tooling. Partner with Product, Design, and Data Science to define success metrics, instrument telemetry, run experiments, and iterate based on results. Design and implement reusable UI components and client patterns, while also contributing to backend and service integration work as needed. Drive engineering excellence through code reviews, automated testing, CI/CD hygiene, and performance profiling. Own live-site quality for the areas you build: monitoring, alerting, incident response, and improvements that reduce time-to-diagnosis. Contribute to team growth through collaboration, documentation, and solid engineering practices. Bachelor's Degree in Computer Science or related technical field AND 2+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python 2+ years of professional software engineering experience building customer-facing applications. Master's Degree in Computer Science or related technical field AND 3+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 5+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. 3+ years of professional software engineering experience building customer-facing applications. Meaningful frontend and full-stack ownership delivering polished, performant user experiences across web and/or mobile surfaces (Kotlin/Swift/web). Experience integrating clients with backend systems via client-server contracts (e.g., REST/JSON, GraphQL, SSE/WebSockets) and collaborating on API/data contract design. Demonstrated ability to debug and troubleshoot client issues and drive performance optimizations for high quality user experiences. Experience building accessible applications that follow WCAG and ADA specifications. Solid collaboration skills and data-driven execution: work effectively with engineers, PM, design, and partner teams; instrument telemetry and use data to iterate.