Principal AI Platform Engineer AI Experiences, Copilot Engineering

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 intelligenceacross agents applications services and inclusive: we aim to make AI accessible to allconsumers businesses developersso that everyone can realize its benefits.

Microsoft AI Experiences Copilot Engineering team is seeking skilled AI Platform Engineers to advance the next generation of capabilities for our personal AI Copilot. This role involves building and operating the AI platform services that power Copilotmodel serving orchestration retrieval and the APIs that product teams build onwith full ownership from design through production. Ideal candidates will have robust experience in infrastructure platform engineering and machine learning bringing technical expertise and a methodical problem-solving approach. Collaboration across teams at Microsoft is key as youll work to expand Copilots integrations and scope creating world-class consumer experiences in a fast-paced innovative environment. Join a team where positivity empathy and effectiveness are as valued as technical acumen.

Microsofts 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.

By applying to this U.S. Mountain View CA position youare required tobe local to the San Francisco Bay Area and onsite 4 days a week.

Starting January 26 2026 AI Experiences employees who live within a 50- mile commute of a designated Microsoft office in the U.S. or 25-mile commute of a non-U.S. country-specific location are expected to work from the office at least four days per week. This expectation is subject to local law and may vary byjurisdiction.

Required Qualifications:

• Bachelors 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.

Preferred Qualifications:

• Experienceleveraginggenerative AI technologies to develop innovative and user-focused product features.

• 6 years experience buildingAPIs and creating pipelines for large-scale products

• 6 years experience building scalable services on top of public cloud infrastructure like Azure AWS or GCP. Extensive use of datastores such as relational databases and key-value stores.

• Experience using Machine Learning frameworks including experience using deployingandscalinglarge language models (LLMs)either personally or professionally.

• Ability toidentify analyze and resolve complex technical issues ensuringoptimalperformance scalability and user experience.

• Dedication to writing clean maintainable and well-documented code with a focus on application quality performance and security.

• Demonstratedinterpersonal skills and ability to work closely with cross-functional teams including product managers designers and other engineers.

• Ability to clearly communicate complex technical concepts to both technical and non-technical stakeholders.

• Experience with retrieval-augmented generation agent frameworks or tool-calling systems at scale and with building evaluation and experimentation infrastructure for AI systems.

• Ability to work in a fast-paced environment manage multiple priorities and adapt to changing requirements and deadlines.

• Proven ability to collaborate and contribute to a positive inclusive work environment fostering knowledge sharing and growth within the team.