Principal Systems Engineer

Harmonic Security lets teams adopt AI tools safely by protecting sensitive data in real time with minimal effort. It gives enterprises full control and stops leaks so that their teams can innovate confidently.

We are led by cybersecurity experts and backed by top investors including N47, Ten Eleven Ventures, and In‑Q‑Tel.

As AI adoption accelerates inside the enterprise, Harmonic’s ability to safely observe, control, and enforce policy at the endpoint is mission‑critical.

This role sits at the core of that challenge. As an endpoint engineer, you’ll help build and evolve the low‑level, security‑critical client software that powers Harmonic’s platform. Our software must be fast, resilient, and trustworthy across operating systems and real‑world conditions. You’ll have the opportunity to shape foundational agent architecture, influence how we collect and process signals on‑device, and set the technical bar for correctness and safety as we define a new categor...