New

Principal Software Engineer - Office Suite Shared Experiences (OSSE)

Microsoft
$139,900.00 - $274,800.00 / yr
United States, Washington, Redmond
Mar 08, 2026
Overview Microsoft is a company where passionate innovators come together to collaborate, envision what can be, and buildwhat'snext. Within theOffice Suite Shared Experiences (OSSE)organization, we build largescale data platforms, experimentation systems, and shared service infrastructure that power critical Office and Copilot experiences used by hundreds of millions of users every day. We are seeking aPrincipal Software Engineerto providetechnical leadership and architectural directionfor our experimentation and insights platform. This roleis responsible fordesigning, evolving, and scalingexperimentation infrastructure and data systemsthat enable rapid, trustworthydecision makingacross Office and Copilotand requires specialized skills and experience for both architecting and designingexperimentation systems, working with large data systems, and drivingcross-organization initiatives. This is a senior technical leadership role withbroadorganizational impact. You will partner closely with engineering, product management, data science, applied science, and leadership teams to definelong termarchitecture, influencecross organizationalinvestments, and raise the technical bar for experimentation, reliability, anddata drivenengineering across Microsoft. 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 As aPrincipal Software Engineer, you will: Technical Leadership & Architecture Provideend-to-endarchitectural leadershipfor largescale experimentation and experimentation infrastructure used across Office and Copilot. Define and evolvelong termtechnical strategyfor experimentation platforms, data pipelines, and shared services, balancing innovation, reliability, cost, and developer productivity. Act as atechnical authority and advisoracross multiple teams, guiding system design decisions and resolving complex, ambiguous technical challenges. Experimentation & Data Platforms Lead the design and scaling ofexperimentation systems, including assignment, metrics, analysis, and insight generation. Drive best practices fortrustworthy experimentation, including data quality, metric definitions, statistical rigor, and observability. Design andoperatelargescale data systems leveragingECS, Kusto, Cosmos DB, and SCOPEto support bothreal timeand batch analytics. Build,Operate& Evolve Shared Services Build and evolvehigh reliability, multitenant servicesthat are foundational to experimentation, insights, anddecision making. Ensure systems meetMicrosoft levelexpectationsfor availability, performance, security, and operational excellence. Serve as aDesignated Responsible Individual (DRI)when needed, setting standards for incident response,post incidentlearning, and operational maturity. Cross OrganizationalImpact Partneracross Office, Copilot, and adjacent organizations toalign experimentation strategy and infrastructure, reducing fragmentation and duplicative investments. Influence and drivecross organizationaltechnical change, aligning teams around shared architecture, tooling, and standards. Mentor senior engineers and raise the overall technical bar through design reviews, technical deep dives, and coaching. AI, Insights & Innovation Shape howAI/LLMdriveninsightsare integrated into experimentation workflows to accelerate learning and improve engineering efficiency. Partner with PM, Applied Science, and Data Science teams to translate ambiguous business problems into scalable technical solutions. Culture & Values Model Microsoft's culture and values, including inclusion, accountability, anda growthmindset. Lead through influence, technical credibility, and collaboration rather than direct authority. Embody our culture and values. 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. 4+ years experience in experimentation infrastructure, including system design, metrics, analysis, and operational considerations. Other Requirements: Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter. 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. Proven experience designing andoperatinglargescale distributed systems and data platforms. Stronghands-onexperience withExperimentation and Configuration Service(ECS), Kusto, Cosmos DB, and SCOPEin production environments. Demonstrated ability to providetechnical leadership across multiple teamsand influence architectural direction at scale. Experience drivingcross organizationaltechnical initiativesand influencing change beyond a single team. Experience withAzure Data Factory (ADF)or similar orchestration frameworks. Experience designing or integratingAI/LLMpoweredworkflowsinto data or experimentation platforms. Track recordof mentoring engineers and shaping engineering culture at scale. 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.