Overview

Want to build a modern web browser with security, stability and high performance? Fix them! The Microsoft Edge Fundamentals team focuses on providing basic guarantees for the normal operation of Edge, such as security, performance, stability, accessibility, etc.

We are hiring a Senior Software Engineer to work on Edge App Defaults. As a member of this team, you will gain a deep understanding of the various problems users encounter when using Edge, analyze their causes, and provide solutions. At the same time, you can also use various data platforms to evaluate the results of your work and the value it brings to users.

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:

As a Senior Software Engineer in Edge App Defaults, you will be joining a team passionate about driving into Microsoft Edge. This team is keen to protect users from using Edge normally, provide users with a normal Internet experience, and stay away from various malware harassment.

• In this team, you will have the opportunity to work with other teams, not only within Edge, but also with the Windows team to provide users with good Internet experience.
• You can also dig into the OS code and gain a deeper understanding of Windows.
• You will analyze Edge online usage data to identify emerging attack behaviors targeting Edge, and drive feasible mitigation solutions end-to-end.
• You will leverage advanced AI technology to shorten the detection latency for new attack behaviors.
• You will leverage advanced AI solutions to build sustainable, iterative, and long-term effective defense strategies.

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 PythonOR equivalent experience.
• 3+ years in Windows desktop GUI application experience.
• Proficient on English reading and writing.

Preferred Qualifications:

• 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 PythonOR 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.
• Familiarity with Win32 API program development.
• Chromium based work experience.
• Familiarity with assembly and reverse engineering.
• Familiarity working in an agile environment, attending daily standup.
• Average verbal smooth English communication ability.

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.