Staff Software Engineer

Illumio·HQ - Sunnyvale (Office)·Posted 3 November 2026

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About the role

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. OUR TEAM'S VISION: At Illumio, our engineering team thrives on visionary leadership, customer-centric innovation, and relentless execution. We tackle the most critical and complex challenge in modern cybersecurity: stopping malicious actors and containing cyber threats before lateral movement turns an attack into a widespread business catastrophe. As an engineer here, you will design, build, and optimize massively scalable distributed systems that power the future of zero trust, segmentation, and automated breach containment. Working across a high-performance stack—from operating system internals to highly…

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