Senior Software Engineer – Backend Platform

We are seeking a Software Engineer to drive the next generation of scalable, resilient, and performant backend systems at Microsoft. This role is ideal for a backend-focused engineer with deep experience in .NET/C#, distributed systems, and enterprise-scale commerce platforms. You will architect and build robust services powering pricing, cart, and...

Senior Software Engineer – Frontend Platform & Commerce ServicesRedmond, Washington, United StatesDate postedOct 14, 2025Job number1890788Work site3 days / week in-officeTravel0-25%Role typeIndividual ContributorProfessionSoftware EngineeringDisciplineSoftware EngineeringEmployment typeFull-TimeOverviewWe are seeking a Software Engineer to drive the next...

The M365 Copilot App Platform team is the team that provides the platform APIs, infrastructure and backend web server for the Microsoft 365 Copilot app ). All partner teams have built their AI-enabled experiences on our platform and depend on us for their success. Our team is responsible for the entire technology stack, including application code,...

Are you passionate about shaping the future of cloud development? Join the Azure App Service team—part of Developer Division (DevDiv)—where we're reimagining how developers build and scale applications in a mobile-first, cloud-first world. You'll be part of a team that delivers platform innovations powering web, mobile, and serverless workloads across...

The High Availability (HA) team part of M365 Core, is seeking a Senior Software Engineer - Chaos Engineering. This role is crucial as HA has been a cornerstone of the Substrate backend solution. We continue to explore opportunities for improving and optimizing service reliability. Our continuous strive to provide best service to our customers goes beyond...

Microsoft is built on trust, and Azure is dedicated to becoming the most trusted cloud service for its customers. As Azure expands its services, certifications, and regions for its global customers, there is a growing need for increased support to uphold customer promises. The Azure Core Trusted Platform team is committed to enabling product teams to deliver...

Microsoft is at the forefront of a new era in productivity, and Microsoft 365 Copilot is redefining how we build and deliver AI experiences. We are a small, focused team within MSAI Office of the CTO (OCTO) committed to driving Copilot Agility — accelerating how we innovate, build, and scale the Copilot platform across Microsoft. We are looking for a...

The High Availability (HA) team is a cornerstone of Substrate, dedicated to providing unparallel backend availability and redundancy for M365 clients. Our team continuously explores, designs, validates, and rolls out new backend configurations. We collaborate closely with partners across Fleet, Deployment, Performance, and Capacity teams to define future...

Security represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft Security aspires to make the world a safer place for all. We want to reshape security and empower every user, customer, and developer with a security cloud that protects them with end to end, simplified...

Windows 365 Cloud PC (W365) and Azure Virtual Desktop (AVD) have consistently been recognized as leaders in the Gartner Magic Quadrant for Desktop as a Service (DaaS).  At its core, W365 and AVD provide business customers a modern, elastic, cloud-based Windows experience, and the ability to stay current in a simplistic and scalable manner. The Windows...