Principal Software Engineer - AI Experiences, Microsoft Edge

The Microsoft AI Experiences, Edge browser is a core strategic product and a key entry point to Microsoft’s new AI ecosystem, serving hundreds of millions of users daily. As the era of AI-powered browsers begins, Edge faces direct competition from Google, Perplexity, and OpenAI.

We’re looking for exceptional Full Stack Engineers to join the Edge AI Companions and Agents Engineering team, one of the most high-profile and dynamic areas within Microsoft AI Experiences. Our mission is to leverage cutting-edge large language models (LLMs), context and prompt engineering to create innovative, intuitive, and state-of-the-art Copilot experiences that bring real value to browser users.

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.  

By applying to this U.S. Redmond, WA position, you are required to be local to the Redmond 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 by jurisdiction. 

• Design and deliver flagship Edge Copilot experiences in collaboration with product and design teams.
• Build new infrastructure in Edge Client to expose power of modern browser to multiple teams across MAI.
• Take end-to-end ownership across the full stack, including Edge client, orchestration, prompting, and UX.
• Drive innovation at the intersection of browser technology and AI systems, defining the next generation of intelligent browsing.

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.

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.
• Ability to perform system-wide root cause analyses and drive measurable improvements.
• Proficiency with AI tools and coding.
• Prior experience shipping products at Microsoft or in similarly large-scale environments.