Principal Software Engineer

In this role, you will Combine technical expertise, cross-team leadership, and business impact to shape the future of the Bing Ads platform. Own critical components of the ads serving stack end-to-end, improving scalability, performance, reliability, maintainability, observability, and engineering efficiency. Lead the evolution of the core auction and pricing engine, ensuring correctness, efficiency, low latency, and solid business outcomes for revenue and ad quality. Drive ambiguous, high-impact technical initiatives from concept to delivery, defining strategy, aligning multiple teams, and leading execution through influence. Partner closely with engineering, product, design, and applied science teams to deliver complex cross-functional features and integrate new AI-powered capabilities into the auction platform. Set architectural direction across teams by leading design reviews, modernizing shared platform capabilities and development frameworks, and reducing system complexity. Advance AI-enabled engineering practices and developer productivity through improved tooling, automation, and platform investments. Mentor engineers, establish high engineering standards, and raise the technical bar across the organization. Ensure the health of a high-scale, low-latency platform serving billions of requests daily by driving operational excellence, incident response, root-cause analysis, capacity planning, and performance optimization. Connect technical decisions to business outcomes, translating long-term strategy into a prioritized technical roadmap that improves customer experience, platform reliability, and business growth. 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 Master's Degree in Computer Science or related technical field AND 8+ 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 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. 5+ years of experience owning and operating production services as a Designated Responsible Individual (DRI) or on-call owner. Proven technical design, problem-solving, and debugging skills, with experience working on large, complex production systems. Proven ability to lead technical initiatives across teams, influence architectural decisions, and communicate effectively with engineering and cross-functional partners. Demonstrated success driving ambiguous, high-impact projects independently, delivering complex solutions with minimal direction. Proven experience designing, building, and operating large-scale distributed systems throughout the full software development lifecycle. Experience leading architecture and technical execution across multiple teams, influencing engineering strategy and driving technical alignment. Experience building shared platforms, frameworks, or developer productivity solutions. Experience with online advertising, search, or other high-scale, low-latency distributed systems.