Nightfall AI is hiring a
Endpoint Engineer

Summary

The job involves designing and developing data exfiltration prevention apps for MacOS or Windows, maintaining and evolving mission-critical agents on endpoints, owning complex features from design to delivery, and troubleshooting issues. The candidate should have expertise in one of the specified languages, practical development experience with Endpoint Security System Extension (for MacOS) or WDF (Windows Driver Frameworks), and a minimum of 5 years of related work experience.

Requirements

• Expertise in one of the following: Objective-C, Swift on MacOS or C/C++ on Windows
• Demonstrable expertise in developing agents on one of MacOS or Windows
• Experience with kernel-level debugging processes and tools
• Ability to use reverse engineering techniques and debugging of kernel space code
• Ability to decompose complex business problems and own them end to end across teams
• Minimum 5+ years of related work experience

Responsibilities

• Designing and developing data exfiltration prevention apps, drivers, system extensions and services on MacOS or Windows
• Maintaining and evolving mission-critical agents on endpoints
• Own complex features from design to delivery and troubleshoot issues from customers
• Designing and building secure software with cross-platform deliverables (Windows, MacOS)
• Writing and maintaining documentation about internal and public services

Preferred Qualifications

• On MacOS, practical development experience with Endpoint Security System Extension is required. A plus will be knowledge of IOKit and of MacOS VFS model
• On Windows, practical development experience with WDF (Windows Driver Frameworks), filter drivers and familiarity with user mode apps is required
• Readiness to learn other systems languages (e.g. Rust, Go, Python). Prior experience in one of these languages is a definite plus