JOB DETAILS
Principal Security Researcher - Microsoft Defender
CompanyMicrosoft
LocationHerzliya
Work ModeOn Site
PostedNovember 25, 2025
About The Company
Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all mentality. We show up cheering on others, knowing their success doesn't diminish our own. We show up every day open to learning our own biases, changing our behavior, and inviting in differences. Because impact matters.
Microsoft operates in 190 countries and is made up of approximately 228,000 passionate employees worldwide.
About the Role
* Analyze and research security controls, attackers' techniques and anomalous patterns Explore massive amounts of data to come up with new security posture insights, which can then be translated into security findings for our customers Work together with the different engineering teams to develop the code to support the research findings Collaborate with multiple product teams to design sensors, implement discovery & detection logics and validate their effectiveness using a data-driven approach * You have at least 10+ years of security research experience Proficiency in developing C, Python or .NET. Experience with leading features end to end. B.Sc. or M.Sc. in Computer Science, Software Engineering, or relevant practical experience (e.g. service in an elite technology unit in IDF) * * Offensive security research experience Network security research experience Industry recognized author of security research papers, blogs or books Excellent cross-group and interpersonal skills
Key Skills
Security ResearchC ProgrammingPythonNETOffensive SecurityNetwork SecurityData AnalysisCollaborationInterpersonal SkillsEngineeringSensor DesignDetection LogicSecurity ControlsAnomalous PatternsResearch FindingsCross-Group Collaboration
Categories
TechnologySecurity & SafetyEngineeringScience & Research
Job Information
📋Core Responsibilities
Analyze and research security controls, attackers' techniques, and anomalous patterns. Collaborate with engineering teams to develop code supporting research findings and design effective detection logics.
📋Job Type
full time
📊Experience Level
10+
💼Company Size
226356
📊Visa Sponsorship
No
💼Language
English
🏢Working Hours
40 hours
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