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Senior Software Engineer - M365 Copilot App

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Microsoft Corporation

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Location:
United States , Redmond

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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:

Are you a UX engineer passionate about crafting high-performing, scalable frontend experiences that power AI productivity? Join the M365 Copilot App team in Redmond, WA, where we’re shaping the future of AI-driven user interfaces used by millions worldwide. In this role, you’ll not only build innovative features but also design and implement performance telemetry, analyze live site metrics, and use data-driven insights to reason about performance at scale. You’ll help evolve the frontend foundations that enable teams across Microsoft—including Create, Copilot Notebooks, and Copilot itself—to deliver experiences that are fast, reliable, and intelligent. As a Senior Software Engineer - M365 Copilot App, you’ll lead the development of portable, scalable, and performant frontend patterns and strategies that advance the Microsoft ecosystem and drive AI value. Beyond building UI frameworks, you’ll take ownership of performance monitoring by integrating telemetry signals, interpreting real-world performance data, and applying those insights to guide architectural decisions. You’ll collaborate with engineers, designers, and researchers to bring inclusive, high-performing experiences to life, while influencing the core infrastructure that supports AI-powered productivity at global scale.

Job Responsibility:

  • You will design and implement scalable, high-performance frontend systems using React, TypeScript, microfrontends, and modern rendering stacks to power AI productivity experiences across the M365 Copilot App—while ensuring performance telemetry is built into the experience.
  • You will partner across Microsoft, including teams like Create, Copilot Notebooks, and Copilot, to evolve a shared frontend platform and define reusable, portable architectural patterns and best practices that enable consistent, intelligent, and data-driven performance at scale.
  • You will lead architectural decisions and contribute hands-on code to advance the state of the art in frontend engineering, balancing innovation with platform stability and applying insights from live site performance data to guide trade-offs.
  • You will apply a data-driven approach to performance, leveraging real-world telemetry, experimentation, and diagnostics to continuously optimize responsiveness, accessibility, and reliability—using metrics like UPLT and live site dashboards to validate improvements.
  • You will mentor engineers and foster a culture of technical excellence through best practices in frontend architecture, performance profiling, telemetry integration, and cross-platform design systems.

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.
  • 4+ years of experience in frontend architecture, performance engineering, or scalable web application development.

Nice to have:

  • Customer‑obsessed and passionate about product impact, with a focus on using data insights to inform decisions and improve user experience.
  • Experience applying a data-driven approach to engineering, including performance telemetry, experimentation frameworks, and analytics pipelines
  • familiarity with Azure Data Factory or similar ETL technologies for integrating and transforming performance data at scale.
  • Ownership of a complex frontend system or framework, such as a microfrontend orchestration layer or a high-scale web experience with strict performance SLAs—delivered in production and adopted across multiple teams or products, with measurable performance outcomes.
  • Ability to elevate engineering culture and practices through initiatives that led to measurable improvements in performance, platform adoption, or developer productivity across teams or organizations.

Additional Information:

Job Posted:
February 17, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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