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Software Engineer II (L62) - Copilot API

Microsoft· Software Engineering
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Hybrid (Czech Republic)CZK 966k - CZK 1727kFull-timePosted 4d ago

About the role

Software Engineer II to join the Copilot API Platform Frameworks team, focusing on backend services and APIs powering GitHub Copilot. Emphasis on design, performance, reliability at scale, and intelligent LLM request routing. Collaborative, iterative design and implementation with ownership of a defined area, on-call responsibilities, and driving observability and cost efficiency.

Responsibilities

  • Design, develop, test, and ship high-quality technical solutions that scale across multiple GitHub services.
  • Build and evolve LLM routing/orchestration capabilities (e.g., model/endpoint selection, fallback, retries, guardrails, and request shaping) to optimise user experience, quality, latency, and cost.
  • Design and implement APIs and service components that support Copilot integrations and intelligent inference pathways.
  • Collaborate cross-functionally with engineering, product, and applied AI partners to define and deliver innovative solutions.
  • Own and advocate for system health and quality, including participation in on-call and first responder rotations.
  • Write architecture briefs and proposals, run experiments/prototypes, and use production signals to drive iterative improvements.
  • Define and track success metrics, including platform reliability metrics (SLOs) and routing effectiveness metrics.
  • Use CI/CD and safe deployment practices to deliver changes confidently and quickly.
  • Mentor peers through technical leadership, pairing, and thoughtful code/design reviews.
  • Become intimately familiar with the systems you build and take pride in writing maintainable code.

Qualifications

  • Degree in Computer Science or related technical field, OR equivalent experience.
  • Demonstrated technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR equivalent experience.

Skills

Required:Backend software engineeringAPI design and service components
Last updated Oct 23, 2026. Interested? Apply on the company site.

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