Senior Software Engineer - Web Shared UX

Microsoft•Redmond, WA

About The Position

The Web Shared UX team builds the foundational front‑end experiences that power Copilot across Microsoft 365. Our work enables consistent, high‑quality AI‑driven interactions across Word, Excel, PowerPoint, and other Office surfaces on the web. As a Senior Software Engineer, you will focus on building and maintaining customer‑facing UX components and systems that are shared across Office apps. You’ll work closely with Design, Product Management, and partner engineering teams across Office Shared to deliver polished, accessible, and reliable Copilot experiences at massive scale. This role is ideal for an engineer who cares deeply about UX craftsmanship, enjoys collaborating across disciplines, and wants ownership over shared UI systems used by millions of customers. 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.

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 with React and modern web development.
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Nice To Haves

Master'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 Bachelor'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 equivalent experience.
Experience in building highly available systems at scale.
4+ years of experience with React and TypeScript in production applications.
4+ years of experience building and maintaining shared libraries or component systems.
Experience with web accessibility standards (WCAG, ARIA) and building accessible components.
Experience with initial component development through to production deployment.
Experience in leveraging AI to increase development productivity.
1+ years of experience applying AI or machine learning techniques to develop scalable solutions.

Responsibilities

Build, ship, and maintain front‑end UX features and shared components for Copilot experiences across Microsoft 365 on the web.
Leverage and contribute to Fluent UI and other shared UX libraries, ensuring consistency, accessibility, and high visual quality across surfaces.
Partner closely with Design and Product Management to translate designs and product intent into high‑quality, production-ready experiences.
Collaborate with engineers across Office Shared and app teams to integrate shared UX systems into partner workflows.
Write clean, maintainable, and well‑tested code, with attention to performance, reliability, and long-term ownership.
Participate in the team’s DRI/on-call rotation, helping ensure the health, availability, and fast recovery of shared web experiences.
Contribute to a culture of engineering excellence, thoughtful code reviews, and continuous improvement.
Embody the Microsoft culture and values.

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