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Principal Software Engineer - Front End

Microsoft

$139,900 - $304,200
Oct 3, 2025
Redmond, WA, US
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Microsoft's Copilot Studio Agent Platform & Experiences team is seeking a Principal Software Engineer, Front End to develop the user-facing components of their next-generation AI tooling, enabling users to create and manage intelligent agents across Microsoft products.

Requirements

  • 5+ years of experience with front end technologies including JavaScript, React, or TypeScript.
  • 4+ years of experience working in an environment building and supporting hosted services.
  • Experience with React, JavaScript, TypeScript, and front-end state management solutions such as Redux, Recoil, MobX, or similar.
  • Experience in standing up and working with Build Tooling infrastructure and writing effective End to End/Integration/Unit Tests.
  • Demonstrated CS fundamentals with a deep appreciation for the differences between platforms and environments.
  • Demonstrated technical design, architecture, problem solving, and debugging skills.
  • Experience with building ML tooling or working with LLM’s, Voice Assistant skills, natural language processing concepts and fundamentals.

Responsibilities

  • Lead the design and implementation of modern, accessible frontend solutions using React and TypeScript.
  • Own architecture discussions, establish frontend patterns, and contribute to system design across web surfaces.
  • Drive telemetry integration to track performance, usage, and reliability; use this data to refine the product.
  • Mentor other engineers and act as a Designated Responsible Individual (DRI) for systems in production.
  • Partner closely with PM, Design, and partner engineering teams to ship cohesive, customer-focused experiences.
  • Write clean, extensible, and testable code that scales, while contributing to shared tools and internal frameworks.
  • Promote engineering standards—code quality, testing, accessibility, security, and performance.

Other

  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role.
  • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud Background Check upon hire/transfer and every two years thereafter.
  • Unwavering passion to understand and simplify the no-code and low-code developer experience.
  • A track record of working collaboratively to understand customer needs and create solutions that positively impact our customers.
  • Microsoft is an equal opportunity employer.