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Aligned with Microsoft’s mission to empower every person and every organization on the planet to achieve more, Microsoft Shopping delights customers with confidence, convenience, and savings—anywhere. With the power of AI, we’re building best-in-class shopping experiences that span across Copilot, Edge, Bing, MSN, and Windows, helping customers discover, evaluate, and decide with speed and trust. We’re looking for a Principal Software Engineer (Frontend/Full Stack) to help shape the future of shopping in Copilot. This role is for an engineering leader who can set technical direction, drive end-to-end execution across client experiences, services/APIs, data contracts, telemetry/experimentation, and operational excellence, and raise the bar on craftsmanship and reliability at scale.
Job Responsibility:
Set technical direction and drive execution for Copilot Shopping experiences end-to-end, with a strong bar for frontend quality (UX polish, accessibility, performance, reliability)
Lead architecture across the stack: 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 outcomes
Drive engineering excellence across the team via design reviews, code reviews, testing strategy, CI/CD, and performance/quality standards
Own live-site health: improve observability, monitoring/alerting, incident response, and reduce time-to-diagnosis through systemic fixes
Decompose ambiguous problems, align stakeholders, and deliver durable solutions that improve scalability, maintainability, and developer velocity
Mentor senior engineers, raise the technical bar, and amplify impact through documentation, best practices, and cross-team collaboration
Requirements:
Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
6+ years of professional software engineering experience building customer-facing applications
Ability to meet Microsoft, customer and/or government security screening requirements
Microsoft Cloud Background Check
Nice to have:
Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience (Master’s a plus)
10+ years of professional software engineering experience is a plus
Demonstrated technical leadership: owning architecture and execution across multiple components/teams, driving alignment, and making high-quality tradeoffs
Strong experience building modern client experiences (web and/or mobile) and collaborating across tiers to deliver end-to-end outcomes
Experience designing and evolving client–server contracts and service integrations (REST/JSON, GraphQL, streaming/event-based patterns such as SSE/WebSockets)
Experience with measurement and experimentation at scale: telemetry design, dashboards/analysis, and data-driven iteration
Track record of improving reliability, performance, and operational excellence through observability and systematic engineering practices