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Security Researcher II / Senior Security Researcher - Microsoft Defender (Multiple Roles)

Microsoft· Security Research
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Hybrid (Israel - Tel Aviv/Herzliya), Hybrid (Israel - Tel Aviv), Hybrid (Israel - Beer-Sheva), Hybrid (Israel - Haifa), Hybrid (Israel - Nazareth)on-sitePosted 2mo ago

About the role

Join Microsoft Defender Research teams in Israel to develop production-ready protection against advanced threats across hybrid and multi-cloud environments. Roles include Security Researcher II or Senior Security Researcher in specialized groups (Autonomous Attack Disruption, Cloud Workload Protection, Identity Research, Posture Research, or Security for AI).

Responsibilities

  • Investigate real world advanced attacker TTPs to develop high-fidelity protection signals, and robust logic across complex kill-chains.
  • Design and implement innovative capabilities that autonomously prevent, detect and disrupt sophisticated threats in near real-time.
  • Infuse deep security expertise into the analysis of massive telemetry sets using big-data query languages, reasoning over data to identify novel malicious patterns, and drive evidence-based research decisions.
  • Partner with engineering and product teams to share research insights, validate protection concepts, and push ideas forward into production-ready protection at a global scale.
  • Contribute expert insights to a strategic feedback loop by analyzing real-world attack data and telemetry to refine protection coverage and accuracy.

Qualifications

  • 4+ years of hands-on experience in security research or threat hunting, with a specialized focus on identity, cloud, or AI-based threat scenarios.
  • Deep understanding of the threat landscape, including modern attacker techniques and complex kill-chains, with a focus on platform internals across OS, Cloud Workloads and Identity platforms.
  • Experience hunting across diverse signal sources, effectively uncovering threats within on-premises, hybrid, and cloud environments.
  • Programming proficiency (e.g., Python, C#, or similar), with a proven ability to develop and ship production-ready protection logic.Demonstrated ability to work effectively in cross-functional teams, bridging the gap between deep research and scalable engineering.

Skills

Required:Security researchThreat huntingProgramming
Last updated Aug 13, 2026. Interested? Apply on the company site.

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