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The Microsoft AI organization in Microsoft has several thousand software engineers strong, working on Copilot, Bing, Edge browser, Maps, Ads, News and other projects. We are the Platform Team that powers all our services and work with hundreds of developers across multiple teams.

We are seeking a **Senior Software Engineer** to join a team of smart and passionate engineers to bring products from inception to production. We strongly believe that collaboration enables better products, so you will work closely with Product Managers and other engineers to design solutions. As our applications continue to evolve, you will have a significant voice in deciding which best practices and tooling we adopt.

Our culture is inclusive, casual, and high energy; our team members come from diverse backgrounds and are grounded in our customers’ needs. This is a fantastic opportunity to build services and experiences that millions of people worldwide will use at home, at school, at work, and throughout their lives.

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.

_Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50- mile commute of a designated Microsoft office in the U.S. or 25-mile commute of a non-U.S., country-specific location are expected to work from the office at least four days per week. This expectation is subject to local law and may vary by jurisdiction._

Responsibilities

+ Help build infrastructure that protects services and products under Microsoft AI.

+ Work on cutting-edge systems that are meant to protect Gen-AI based services from abuse and denial-of-service.

+ Build extremely low-latency reverse-proxies that can scale dynamically and are deployed globally.

+ Leverage ePBF to build detection and mitigation pipelines for new services

+ Build capabilities on top of SLMs using ONNX runtime to detect novel attacks in real-time.

+ Enhance proxy capabilities for WSS, WebRTC etc.

+ Design, write and implement services with performance, efficiency, re-usability, and maintainability as core focus.

+ Mentor engineers on the team by providing hands-on assistance, best practices, and promoting an inclusive learning environment.

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.

+ 2+ years of experience working with CDNs, DNS, Load Balancers, or Traffic Management.

+ 2+ years of experience working with internet-facing application servers or reverse proxies like Apache, NGINX, YARP, Istio etc.

+ 5+ years of experience writing code (C/C++, C#, Java, Python) for large-scale systems.

Preferred Qualifications:

+ Pen-testing experience in the industry.

+ Bot Detection and DDoS Protection.

+ Published contributions to CVEs.

+ Ability to deal with ambiguity to prioritize issues.

+ Good understanding of UX frameworks and HTTP protocol basics.

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 November 11, 2025.

\#MicrosoftAI #BING

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) .