Connecting people I'd hire with companies I'd work at

Matt Wallaert
companies
Jobs

Senior Software Engineer

Microsoft

Microsoft

Software Engineering
Mountain View, CA, USA · Redmond, WA, USA
USD 119,800-234,700 / year
Posted on Dec 24, 2025
Overview

AI is transforming productivity in profound ways. As the new home of Office productivity, the M365 Copilot App (M3CA) is at the forefront of this transformation. It is one of the fastest growing products at Microsoft, and the primary means through which most M365 users experience the power of Copilot – be it Chat, Search, or Agents. M3CA is a multi-platform product, built for consumer-grade experiences and enterprise-grade trust. Our team is responsible for all aspects of engineering for this ecosystem of applications and services.

As a Senior Software Engineer- M365 Copilot App on the team, you will be responsible for designing, building and running core features of the Copilot application across Windows, Mac, and Web platforms. You will lead design decisions and contribute hands-on code to build applications, balancing innovation with platform stability. You will work closely with other engineers to take ideas through implementation, validation, and release. You will write secure, reliable, scalable code as well as test automation and telemetry to measure its behavior in production. You will work in a fast paced, collaborative environment to design, prototype, implement, and ship features. You will partner across multiple product and platform teams in Microsoft. You will mentor engineers and foster a culture of technical capabilities in design, performance profiling, and cross-platform design systems. You will provide engineering leadership to the team taking on technical issues inherent in building and delivering a consumer-grade application that powers cross-platform AI experiences.

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.



Responsibilities
  • From fast evolving new features to long-term architecture investments, you will be responsible for shipping robust, performant, reliable and delightful experiences to millions of customers.
  • Team members collaborate on every detail of design, implementation, validation and monitoring of feature usage and health across M365 Copilot desktop and web clients and backend services.
  • You will get a chance to enrich the core of M365 Copilot App, which is powered by our native C++ codebase, making product changes that allow us to stay in lockstep with the changing needs of our customers.
  • You will have the opportunity to advance engineering excellence by driving design discussions, contributing to code reviews and participating in knowledge sharing sessions.
  • Embody our Culture and Values


Qualifications

Required Qualifications:

  • 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.

Other Requirements:

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.

Preferred Qualifications:

  • Masters's Degree in Computer Science or related technical field AND 4+ years software development experience in C++, C# or Java
    • OR equivalent experience.
  • Passion for customers, product quality, service excellence, test engineering and having a growth mindset
  • Ability to work cross group and across disciplines.
  • 5+ years experience in application platform and architecture.
  • Proficiency in design, debugging, analytics, live site and problem solving.
  • Experience shipping multiple releases.


Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $158,400 - $258,000 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:
https://careers.microsoft.com/us/en/us-corporate-pay


This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.




Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.