New

Senior Software Engineer - M365 Core

Microsoft
$119,800.00 - $234,700.00 / yr
United States, Washington, Redmond
Mar 02, 2026
Overview We are the Store Team within Microsoft's Substrate Storage Fabric-the core platform that fuels Microsoft 365 experiences, from the latest AI-powered Copilot innovations to Outlook and Teams, etc. Our team delivers ultra-low latency data access at massive scale. We are looking for aSenior Software Engineerto design, evolve, and modernize the core systems that power Copilot. If you're passionate about building ultralowlatency, highthroughput services that run on a global scale, this role gives you the opportunity to shape one of Microsoft's most strategic products. 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 Designs, manages and modernizes our technology stack leveraging expertise in building and optimizing latency-critical applications using C# and RUST. Plays a pivotal role in managing, implementing and scaling systems that demand high performance and low latency. Leads efforts to continuously improve code performance, testability, maintainability, effectiveness, and cost, while learning about and accounting for relevant trade-offs. Acts as DRI and leads on-call operations, ensuring system health and rapid incident response across product lines. 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. Embody our culture and values. Qualifications Required Qualifications: Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. 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 6+ 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 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. Demonstrated experience at the Senior level for at least 2 years, with clear ownership of architecture, design decisions, and technical direction across multiple workstreams. On-call experiencesupportingproduction-grade, highly available systemsservingmillions of users. Expert-level proficiency in C# and/or RUST. Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 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 $158,400 - $258,000 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.