Windows Endpoint Security Developer

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Location | Remote

Time Zone | US Time Zones (EST–PST)

We are seeking a Windows Endpoint Security Developer with strong C, C++, and Windows driver development skills to help build an AI-focused endpoint protection platform. This is a full-time, hands-on engineering role. Your first focus will be building a Windows service that collects system, network, and process data to detect and respond to threats. The ideal candidate knows Windows internals well and enjoys building fast, reliable security software.

• Design and implement Windows endpoint services, including kernel-mode and user-mode modules
• Develop Windows drivers (WDM, KMDF, UMDF) to monitor file system, process, memory, and network activity
• Build features that drive efficient data collection focused on AI behavioral monitoring
• Implement secure hooks and filters using Windows Filtering Platform (WFP), mini filters, and ETW
• Collaborate with the team on threat research strategies and translate them into detection logic using endpoint telemetry
• Perform advanced debugging and troubleshooting across kernel and user mode using Win Dbg, crash dump analysis, and Sysinternals tools
• Ensure compliance with Microsoft driver signing, Patch Guard, Secure Boot, and kernel security restrictions
• Optimize agent performance to minimize system impact while maintaining visibility and protection
• Participate in threat modeling, secure coding reviews, and internal security assessments

• Experience working on Windows endpoint security products such as AV, EDR, DLP, firewall, or intrusion prevention (non-negotiable)
• Deep expertise in C, C++, and Windows driver development
• Strong understanding of Windows OS fundamentals and internals
• Experience with kernel-mode communication mechanisms (IOCTL, ALPC, shared memory)
• Proficiency with Win Dbg, crash dump analysis, and Sysinternals tools
• Knowledge of Windows Filtering Platform (WFP), mini filters, and ETW
• Understanding of Microsoft driver signing, Patch Guard, and Secure Boot
• Experience with threat modeling and secure coding practices
• Strong written and spoken English with a clear, professional communication style
• Must have prior remote work experience, be fluent with remote collaboration tools and platforms (such as Slack, Zoom, Google Workspace, Asana, or similar), and have ideally worked with US or UK-based companies. Applications without this experience will not be considered.

• Familiarity with cross-platform endpoint security (macOS/Linux)
• Experience building telemetry or behavioral analytics pipelines for threat detection
• Exposure to AI/ML-driven security products or monitoring AI agent activity

• C and C++
• Windows Driver Frameworks (WDM, KMDF, UMDF)
• Windows Filtering Platform (WFP), mini filters, and ETW
• Win Dbg and Sysinternals tools
• Slack, Zoom, and other remote collaboration tools

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