Principal Software Development Engineer - XBOX Product Growth

Overview At XBOX, we have an ambitious goal to reach 1B daily active users by helping more people discover games, connect with others, and play wherever they are. Over the past 25 years, XBOX has built a passionate global community, innovative hardware and services, and some of the world’s most beloved gaming franchises. How people discover, access, and engage with games is changing rapidly, creating new opportunities for Xbox to grow. XBOX Growth helps unlock these opportunities and reach new audiences through a rigorous, data-informed approach. We combine data, analytics, and product experimentation to learn what works and build experiences that attract, engage, and retain users. Our work enables teams across XBOX to turn insights into measurable impact for users and the business. Join the XBOX Growth's Product team and help build the exemplar of a small engineering team leveraging data informed decision making, agile product engineering, and experimentation. You will sit at the intersection of product design, engineering, and data, crafting experiments that shape how millions of players discover, return to, and stay engaged with XBOX. XBOX is currently resetting its strategy to focus on Core, Content, Creation, and Connection. Growth Product focuses on the Core pillar, through winning on console, delighting players, and giving them reasons to come back and experience the magic of gaming in our ecosystem. This role is about shipping fast, learning through data backed experimentation, iterating on what works and building learning and judgement on what does not. You will work across the whole stack, the whole player journey, and multiple feature areas; no feature area is off limits and this team chooses work based on impact not organizational boundaries. You will accelerate and define data driven development through AI enhanced workflows. You will have measurable business impact by turning learnings into leverage and owning ideas through to execution and scaling. Responsibilities Experiment Shape the future of the XBOX experience. Propose the hypothesis and product vision, not just the technical implementation. Size the opportunity, define success, and execute.Design, ship, and iterate on growth experiments across surfaces, services, and feature areas all to increase Console retention and daily active usersDesign telemetry, metrics, and analytics systems so results can be read without ambiguity, and analyze scorecards objectively. Ship what worked and retire what did not, including your own ideasBuild comfortability with being wrong often, owning learnings, and fast pivots and iterationProvide strong product vision. You will form your own opinions about what is worth building, and you can defend a ranked set of hypotheses with the metric each would move Engineer Build across the stack: service, client, and instrumentation work on console, and possibly even web, mobile, or external surfaces from prototype through general availabilityMake focused, reviewable changes in codebases owned by other teams, and leave their owners glad you were there; make the changes others missed and wished they could have done.Participate in the team's live-site and on-call rotationDemonstrate an ability to enter a large, unfamiliar codebase, orient quickly, and land substantial technical changes to enable team success. Enhance Significantly accelerate the team through agentic workflows and AI evolution across all facets of the engineering lifecycle.Mentor engineers and raise the bar through design reviews, code reviews, and engineering practicesExercise judgement on experiments. Decide when to scale, iterate, or abandonBuild secure, reliable, high-performing systems that meet Microsoft's privacy, compliance, and security requirementsExercise creativity and judgement to balance speed and rigor and find cheap tests for expensive questions and ways to prove impact with minimal upfront investmentUse hypothesis-driven development to measurably move key m