Endpoint Security Developer Jobs

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Today

Windows Kernel Software Developer

ThreatLocker Inc Orlando, FL

Orlando, FL

Today

Full time Device Driver Development Device Drivers Endpoint Security

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Job Description

ThreatLocker is hiring a Windows Kernel Software Developer to design and maintain kernel-mode components for its Zero Trust security platform in Orlando, FL.

Responsibilities

Design and implement Windows kernel-mode filter drivers, including file system minifilters, registry filters, and network filters
Build security monitoring and enforcement for file, process, registry, and network activity
Investigate Windows internals to create low-level, bypass-resistant security features
Use kernel debugging and analysis workflows, including crash dump analysis and performance tuning
Develop secure, stable, and maintainable driver code
Maintain compatibility across supported Windows versions and platform changes
Collaborate with user-mode, QA, DevOps, and security engineering teams

Requirements

5+ years of hands-on experience developing Windows kernel-mode drivers
Experience developing Windows filter drivers
Strong knowledge of Windows system internals, including memory management, I/O, processes, and the object manager
Strong C/C++ development skills
Experience with the Windows Driver Kit (WDK)
Strong experience with kernel debugging and crash analysis
Experience with kernel synchronization, concurrency, and performance-sensitive code
Strong problem-solving skills with a security-first engineering mindset

Technologies

WinDbg
ETW
WPP
Windows Driver Kit (WDK)
C/C++

Preferred Qualifications

Experience with Windows file system minifilters and Filter Manager
Experience with Windows Filtering Platform (WFP)
Experience with registry filtering and process monitoring
Experience with endpoint security, EDR, anti-malware, application control, or Zero Trust products
Experience with WinDbg, Driver Verifier, ETW, and WPP tracing
Experience with reverse engineering or malware analysis
Familiarity with Windows kernel threat models and secure coding practices
Exposure to Microsoft driver signing, WHQL, HLK, and driver submission processes
Contributions to security research, open-source projects, publications, or technical talks

Working Conditions

In-office role in Orlando, Florida
Generally performed in an office environment; occasional travel may be required
Must occasionally lift and/or move up to 25 pounds
Background check and drug/substance screening required after a conditional offer; employment proceeds only with clear results
Randomized drug and substance testing approximately every 60 days, using the same screening standards

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