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Senior Software Engineer - Copilot CLI

https://www.microsoft.com/ Logo

Microsoft Corporation

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Location:
United States , Redmond, WA

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

119800.00 - 234700.00 USD / Year
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Job Description:

Within GitHub and Microsoft CoreAI, the Copilot CLI team builds GitHub’s coding agent in the terminal, and the core agent loop that powers agentic experiences across GitHub and Microsoft. Our work spans the full software development lifecycle, with a focus on turning modern AI systems into reliable, production-grade developer tools. We are looking for a Senior Software Engineer to help build a world-class coding agent CLI. This role is for engineers who care deeply about product quality, end-to-end ownership, and the details that separate promising tools from ones developers trust and adopt daily. Our work sits at the intersection of agentic AI systems and high-performance developer tooling.

Job Responsibility:

  • Take ownership of critical product and platform areas of the Copilot CLI and shared agent runtime
  • Set a high technical and quality bar for agentic systems and developer-facing tooling
  • Design and ship performant, reliable terminal experiences that developers depend on for daily work
  • Use data, benchmarks, and direct user feedback to guide iteration and investment
  • Collaborate across org boundaries to enable other teams to build agentic products on top of a shared foundation
  • Influence architecture, technical direction, and engineering standards beyond your immediate team

Requirements:

  • 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.
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role.
  • This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years

Nice to have:

  • 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.
  • Hands-on experience building and operating generative AI or agentic systems in production, with direct ownership over quality, reliability, and iteration
  • 5+ years of experience building and shipping customer-facing developer products, with depth across platform/foundation systems and user-facing experiences
  • Strong product mindset with a track record of owning ambiguous problem spaces and driving them to high-quality outcomes
  • Solid engineering fundamentals, including systems design, performance, and debugging in complex production environments
  • Experience designing, running, and optimizing evaluations for agentic systems, including tools, prompts, and agent loops
  • Experience building terminal user interfaces (TUIs) or working with low-level terminal primitives is a strong plus
  • Experience contributing to or leading open-source projects at scale is a plus

Additional Information:

Job Posted:
January 27, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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