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About the role
Reach Security tells organizations what their existing security tools should be doing with the products they already own — and proves it. As a Principal Support Engineer, Endpoint, you are Reach's senior domain authority on everything endpoint.
What they're looking for
- 6+ years of deep, hands-on experience with Windows and macOS endpoint agents and endpoint security in enterprise environments — enough to have developed genuine expertise, not passing familiarity
- Time in a senior individual-contributor role such as L3 Support Engineer, Endpoint Engineer, Windows/macOS Engineer, or Security Support Engineer
- Demonstrated command of endpoint agent behavior across Windows and macOS — installation, upgrades, persistence, OS compatibility, performance, and stability — and the judgment to know what “good” looks like
- Kernel-level understanding of Windows, including ETW, WFP, memory management, process/thread behavior, and driver interactions
- macOS internals experience, including the Endpoint Security framework, System Extensions, FSEvents, MDM interactions, notarization, code signing, and process lifecycle
- A track record of analyzing endpoint telemetry, logs, and diagnostics to reach root cause in complex system interactions
More about this role
Reach Security tells organizations what their existing security tools should be doing with the products they already own — and proves it. As a Principal Support Engineer, Endpoint, you are Reach's senior domain authority on everything endpoint.
This is not an endpoint break/fix role. You won't spend your days administering endpoints, packaging agents, or chasing agent crashes. You've already done that work — for years — and that is exactly what qualifies you. Those years in the trenches are what let you look at a customer's endpoint configuration, their controls, and Reach's findings and say, with authority, what matters, what doesn't, and why.
In this role you put that hard-won judgment to work advising the field, guiding customers through their hardest problems, sharpening Reach's recommendations, and troubleshooting how Reach integrates with the endpoint products already in a customer's environment. It is a high-agency individual-contributor role for a proven expert who is energized by unfamiliar problems rather than thrown by them.
You'll serve three audiences at once, and the strongest people in this seat move fluidly between them:
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