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The Microsoft 365 AI Experiences Engineering team is looking for an enthusiastic and experienced **Senior Software Engineer** ReactJS Web developer. Would you like to design and develop new AI-powered experiences that empower 100s of millions of monthly active users to be more productive? If the answer is yes, we would like to hear from you!

We are a highly diverse and distributed team, building products in a quickly evolving space and transforming how M365 users conduct Deep Research within Copilot. You will have the opportunity to incubate and deliver projects across web and desktop clients, driving innovation for AI-powered experiences at Microsoft. We are competing in a rapidly evolving landscape with customers ranging from individual users of Copilot to large enterprises, and you'll participate in every stage of the product development process, including code, architecture, and product/scenario definition.

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

+ Drives identification of dependencies and the development of design documents for Copilot products and features.

+ Creates, implements, optimizes, debugs, refactors, and reuses code to establish and improve performance and maintainability, effectiveness, and return on investment (ROI).

+ Leverages subject-matter expertise of product features and partners with appropriate stakeholders (e.g., project managers) to drive a workgroup's project plans, release plans, and work items.

+ Acts as a Designated Responsible Individual (DRI) and guides other engineers by developing and following the playbook, working on call to monitor system/product/service for degradation, downtime, or interruptions, alerting stakeholders about status and initiates actions to restore system/product/service for simple and complex problems when appropriate.

+ Proactively seeks new knowledge and adapts to new trends, technical solutions, and patterns that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale.

+ Proactively identifies and fixes issues related to reliability, performance, and scalability.

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.

+ 4+ years of experience developing Windows applications using web technologies.

Preferred Qualifications:

+ 7+ years of Web UI development experience including ReactJS web apps.

+ Experience leading technical teams and architectural decision-making.

+ Experience building reliable, well-tested applications with significant direct technical contribution.

+ Familiarity with Agile and iterative development processes.

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

Microsoft will accept applications for the role until October 19, 2025.

\#copilot #ai #m365 #researcher #deepresearch

Microsoft is an equal opportunity employer. Consistent with applicable law, 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 and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations (https://careers.microsoft.com/v2/global/en/accessibility.html) .