New

Principal Software Engineer

Microsoft
$139,900.00 - $274,800.00 / yr
United States, Washington, Redmond
Feb 22, 2026
Overview Shape the way the M365 measures and drives the feedback loop for its AI offerings! On theM365 Evaluation Platform Team, you'll have a front-row seat to how AI impacts millions of users. You'll help steer one of Microsoft's most important efforts forward, taking our evaluation system to the next level for our builders and partners. We are looking for Principal Software Engineer to join our team. Our goal is to accelerate learning by making sure all the user journeys of an eval system (fine tuning a model, launching a new feature or experiment, adding metrics, onboarding a new 1P or 3P partner, understanding user feedback, creating query sets, etc.) are supported by friendly, agile, reliable, scalable and well documented tools. In this role you will build capabilities that: Enable builders to be more agile, running more evaluations and faster. Provide a continuous set of tools and evaluation capabilities throughout thedevelopmentlifecycle. Automate tasks via tools or agents to help us understand our performance better. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. Responsibilities Partners with appropriate stakeholders to determine user requirements for a set of scenarios. Leads identification of dependencies and the development of design documents for a product, application, service, or platform. Leads by example and mentors others to produce extensible and maintainable code used across products. Leverages subject-matter expertise of cross-product features with appropriate stakeholders (e.g., project managers) to drive multiple group's project plans, release plans, and work items. Holds accountability as a Designated Responsible Individual (DRI), mentoring engineers across products/solutions, working on-call to monitor system/product/service for degradation, downtime, or interruptions. Proactively seeks new knowledge and adapts to new trends, technical solutions, and patterns that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale and shares knowledge with other engineers. Qualifications Required Qualifications: 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. Preferred Qualifications: 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. Experience building systems to evaluate and drive quality in a product and using data to drive engineering decisions. A focus for building reliable, scalable infrastructure and making users successful. Comfortable at operating in a dynamic environment; takes initiative to bring clarity and momentum. Self-motivated and outcomes-focused, with a strong sense of ownership and accountability. Platform engineering mindset: building reusable components, reducing timetolaunch, improving debuggability, and delivering welldocumented tooling. Demonstrated technical leadership experience in evaluation, distributed systems or development platforms. Software Engineering IC5 - The typical base pay range for this role across the U.S. is USD $139,900 - $274,800 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year. Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: https://careers.microsoft.com/us/en/us-corporate-pay This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.