Member of Technical Staff - Platform Engineer (C#)

As Microsoft continues to push the boundaries of AI, we are on the lookout for passionate individuals to work with us on the most interesting and challenging AI questions of our time. Our vision is bold and broad — to build systems that have true artificial intelligence across agents, applications, services, and infrastructure. It's also inclusive: we aim to make AI accessible to all — consumers, businesses, developers — so that everyone can realize its benefits.

Microsoft AI (MAI) is seeking experienced Platform Engineers (C#) to help build the next wave of capabilities of our personal AI, Copilot. We're looking for someone who possesses technical prowess, a methodical approach to problem-solving, proficiency in backend technologies, and a mastery of templating to architect solutions that stand the test of time and who will bring an abundance of positive energy, empathy, and kindness to the team every day, in addition to being highly effective.

The Platform Engineering team is responsible for building APIs that support our work in finetuning and deploying the core experience of Copilot, while collaborating with our Product Management, Design and AI Research teams.

Key Responsibilities: • Build secure and performant AI Platform services that power Copilot. • Work collaboratively with other Platform, infrastructure, application engineers as well as AI Researchers to build next generation AI products and services. • Ship high-quality, well-tested, secure, and maintainable code in C#. • Find a path to get things done despite roadblocks to get your work into the hands of users quickly and iteratively. • Enjoy working in a fast-paced, design-driven, product development cycle. • Embody our Culture and Values.

This role requires being local to the Seattle area and in office 3 days a week.