Windows Kernel & Security Systems Engineer

Cylake Inc.; Sunnyvale (CA); On-site; USD 150,000 - 250,000; Full time

Job summary

Cylake Inc. seeks a Windows systems engineer to design and build kernel-level infrastructure for real-time telemetry and endpoint security on Windows. You will work across kernel-mode and user-mode, tackling NT internals, memory, and process lifecycles, with a focus on high-concurrency, robust systems.

This role offers a chance to influence product direction from the ground up at a fast-growing cybersecurity company.

Qualifications

• Extensive experience building low-level Windows systems software.
• Deep expertise in Windows kernel architecture and NT internals.
• Experience developing Windows kernel drivers.
• Strong knowledge of process, thread, memory, and object management.

Responsibilities

• Design and develop production-quality Windows kernel drivers using WDM/WDF.
• Build kernel instrumentation and telemetry pipelines for endpoint visibility.
• Develop high-performance process, thread, and image lifecycle tracking.
• Implement scalable kernel callback infrastructure with notifications.
• Design lock-efficient kernel data structures and synchronization strategies.
• Build reliable user/kernel communication mechanisms and debug concurrency issues.

Skills

Windows kernel

C/C++

Multithreaded debugging

NT internals

Process/thread/memory

Tools

WDM/WDF

ETW

Hypervisor VT-x

Job description

Cylake Inc. seeks a Windows systems engineer to design and build kernel-level infrastructure for real-time telemetry and endpoint security on Windows. You will work across kernel-mode and user-mode, tackling NT internals, memory, and process lifecycles, with a focus on high-concurrency, robust systems.

This role offers a chance to influence product direction from the ground up at a fast-growing cybersecurity company.