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Sr. Threat Researcher

Illumio - Sunnyvale, California - HQ, Sunnyvale, California, United States

Posted May 12, 2026

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About this role

Sr. Threat Researcher Sunnyvale, California - HQ, Sunnyvale, California, United States Onwards Together! Illumio is the leader in ransomware and breach containment, redefining how organizations contain cyberattacks and enable operational resilience. Powered by the Illumio AI Security Graph, our breach containment platform identifies and contains threats across hybrid multi-cloud environments - stopping the spread of attacks before they become disasters. Recognized as a Leader in the Forrester Wave™ for Microsegmentation, Illumio enables Zero Trust, strengthening cyber resilience for the infrastructure, systems, and organizations that keep the world running. Location: 4 on-site days a week in Sunnyvale, CA Headquarters. Our Team's Vision: At Illumio, we're pioneering cybersecurity innovation with our Illumio Insights platform, which leverages a dynamic security graph built from network flows, workload inventories, identity data, threat data, and vulnerability data. This graph enables essential functions such as breach risk detection, network segmentation assessment, active breach identification, and intelligent policy recommendations. To accelerate our product evolution, we're expanding our Threat Research Team with a dedicated expert who will serve as a long-term subject matter expert (SME) for the Illumio Insights product team. We're looking for a talented Senior Threat Researcher to provide ongoing guidance on threats, threat intelligence, attacker behaviors, and TTP mapping. You'll analyze large-scale security datasets, map real-world adversary activity, identify gaps, and collaborate closely with product teams to translate insights into enhanced detection, data enrichment, and strategic direction. This role bridges threat research, detection engineering, and product innovation, offering a unique opportunity to impact how global organizations

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