Principal Security Researcher Jobs

Join Microsoft’s elite Purple Team as a Principal Security Researcher in Redmond, WA. You will design and execute advanced adversary simulations across endpoint, identity, and cloud surfaces to enhance detection coverage. Leverage deep expertise in cybersecurity, threat analysis, and frameworks l...

Join Microsoft’s MTP-R Purple Team as a Principal Security Researcher in Redmond, WA. Lead AI-driven adversary simulations, develop advanced offensive tooling (C2, implants), and research evasion tactics across endpoint, cloud, and identity. Requires a PhD/ Master’s in CS or Security with deep re...

Principal Security Researcher role in Santa Clara, CA, focused on malware research and antivirus systems for Palo Alto Networks. You will develop automated signature generation and detection features for the Next-Generation Firewall and WildFire platform. Requires 6+ years of experience, Python/G...

Join Microsoft Security in Cambridge as a Principal Security Researcher. You will proactively identify threats and build threat-hunting tools using Python, PowerShell, or Bash. Leverage your deep Azure expertise to drive security improvements and defend against evolving threats in a critical, glo...

Join Microsoft Security as a Principal Security Researcher to make the world safer. You will design purple team simulations, analyze threats using KQL, and translate attacker tradecraft into defensive insights. This role requires a PhD/Master's/Bachelor's in a related field with 3-6+ years of exp...

Join the Microsoft Red Team as a Principal Security Researcher. You will hunt for zero-day vulnerabilities in cloud environments, develop proof-of-concept exploits, and simulate real-world attacks to secure platforms used by billions. This role requires deep expertise in threat analysis, vulnerab...

Join Microsoft's elite Cloud Security team in Israel as a Principal Security Researcher. Leverage 10+ years of security research expertise in Azure, AWS, GCP, and Kubernetes. Lead threat analysis, develop innovative defenses for Microsoft Defender for Cloud, and protect planet-scale infrastructur...

Join our Tel Aviv team as a Principal/Senior Security Researcher, focusing on Linux & API Security EDR. You will lead research on Linux OS internals, malware analysis, and develop cutting-edge detection capabilities. We seek an expert with 5+ years in cybersecurity, proficiency in Python/C/C++, a...

Join our Tel Aviv team as a Principal/Senior Security Researcher, focusing on Linux & API Security for EDR. You will research Linux internals, malware, and APTs to build cutting-edge detection and protection capabilities. This role requires 5+ years of cybersecurity experience, proficiency in Pyt...

Lead cutting-edge security research at Microsoft in Redmond. Develop ML and AI-driven defenses against advanced cyber threats. Requires a PhD or 7+ years in cybersecurity, coding, and machine learning. Shape the future of global security in a collaborative, growth-minded culture.

Join Microsoft's Sentinel Platform to build next-gen AI-native security products. As a Principal AI Security Researcher, you'll lead AI/ML research for threat analysis and vulnerability detection at planet scale. This role requires a PhD or equivalent in a related field and experience in cybersec...

Lead deep security research for cloud and AI environments at Palo Alto Networks. Uncover novel vulnerabilities and attack paths, then drive product innovation from proof-of-concept to implementation. This Tel Aviv-based role requires 6+ years of experience, with expertise in cloud security (AWS/A...