Senior Kernel Software Developer at Threatlocker

Orlando, Florida, United States

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

CybersecurityIndustries

Requirements

5+ years of hands-on experience writing Windows kernel-mode drivers, particularly filter drivers
Expert knowledge of Windows system internals (memory management, I/O subsystem, object manager, etc.)
Proficiency in C/C++, Windows Driver Kit (WDK), and kernel debugging tools
Experience in the cybersecurity domain, especially endpoint protection, EDR, anti-malware, or kernel-level monitoring
Solid understanding of code injection techniques, hooking, kernel-mode exploits, and mitigation strategies
Strong problem-solving skills and a security-first engineering mindset

Responsibilities

Design and develop kernel-mode filter drivers (file system minifilter, registry filter, network filter, etc.) to support security monitoring and enforcement
Investigate and reverse-engineer Windows internals to implement low-level security features and bypass-resistant protections
Collaborate with the threat research, detection, and user-mode engineering teams to develop scalable and stealthy security solutions
Perform in-depth kernel debugging, crash dump analysis, and performance tuning using WinDbg, ETW, and related tools
Develop robust, secure, and maintainable driver code that meets Microsoft's signing and certification standards
Monitor Windows platform changes to ensure compatibility and stability across OS versions

Skills

Windows Kernel Drivers

Filter Drivers

File System Minifilter

Registry Filter

Network Filter

WinDbg

ETW

Windows Internals

Crash Dump Analysis

Reverse Engineering

Memory Management

I/O Subsystem

Object Manager

Threatlocker

Provides enterprise cybersecurity software solutions

About Threatlocker

ThreatLocker offers enterprise security software that protects organizations from data breaches and cyber threats. Their main product, ThreatLocker Protect, blocks untrusted software and restricts applications from running unless explicitly allowed, effectively preventing ransomware and other malicious attacks. The company stands out with its fast customer support, typically responding in under 60 seconds, and its ability to help clients comply with various regulations. ThreatLocker's goal is to improve clients' cybersecurity posture while providing cost-effective solutions.

Maitland, FloridaHeadquarters

2017Year Founded

$295MTotal Funding

SERIES_DCompany Stage

Enterprise Software, CybersecurityIndustries

501-1,000Employees

Risks

Increased competition from emerging cybersecurity startups could challenge ThreatLocker's market position.

Rapid workforce expansion may challenge ThreatLocker's company culture and operational efficiency.

Potential over-reliance on U.S. based support could be a risk in global expansion.

Differentiation

ThreatLocker specializes in Zero Trust endpoint protection and application whitelisting solutions.

Their U.S. based support team is known for quick response times under 60 seconds.

ThreatLocker Protect blocks untrusted software, preventing ransomware and malicious software exploits.

Upsides

ThreatLocker raised $115 million to drive R&D, support, and marketing efforts.

The cybersecurity market is expected to grow at a CAGR of 10.9% from 2023 to 2028.

Increased demand for Zero Trust security solutions boosts ThreatLocker's market potential.

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