Senior Security Researcher - CTJ - TS/SCI

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.

Conduct deep endpoint threat research, including malware reverse engineering, attacker techniques, exploitation, defense evasion, persistence, and emerging threats. Investigate false positives, false negatives, missed detections, and customer escalations and use findings to improve MDE protection quality. Analyze MDE telemetry, malware samples, threat intelligence, customer incidents, and hunting data to identify new attack patterns and protection gaps. Own detection work end to end, from threat hypothesis and technical analysis through implementation, testing, deployment, monitoring, and tuning.  Use AI and agentic workflows to automate investigation, enrichment, malware analysis, detection development, testing, and validation while retaining researcher judgment for final decisions. Drive cross-team work when resolving a protection gap requires changes across research, telemetry, engineering, or product boundaries.

Security Research 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 $160,200 - $261,000 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.