Principal Endpoint Engineer

Summary

Join Halcyon, a leading anti-ransomware solution provider, as a Principal Kernel Engineer. You will play a key role in enhancing our Windows agent's capabilities to prevent, detect, respond to, and remediate attacks. Collaborate with cross-functional teams to define and develop new product features. This position requires expertise in C++, kernel-mode and user-mode development, and Windows internals. We offer a remote-first work environment and a comprehensive benefits package, including full health insurance, 401k, paid time off, parental leave, and equity.

Requirements

• Write high-quality multithread-safe code in C++ in both kernel-mode and user-mode
• Always make sound decisions with respect to best engineering practices
• Develop high-quality code in Rust or a strong desire and capacity to learn quickly (Rust)
• Have shipped at least one production quality driver for Windows NT
• Strong knowledge of Win32 APIs and NT kernel internals
• Debug memory corruption issues and improve end-to-end system performance
• Excellent written and verbal communication skills. Able to write documentation that resonates with both technical and non-technical audiences
• Highly collaborative with a strong ability and desire to mentor and inspire others
• Practical professional experience in dealing successfully with ambiguity

Responsibilities

• Collaborate with Engineering, Product, and Customer Success teams to help define new product features and drive these new features from initial concept and through design, coding, test, and release
• Drive customer-facing problem investigations and performance investigations and transform learnings from these investigations into higher quality code in the form of new features, bug fixes, and performance enhancements

Preferred Qualifications

• Knowledge and experience with Portable Executable format, Reverse Engineering
• Experience with Windows Mini-Filter drivers and Windows Filter Platform callout drivers
• Experience with SQL/Databricks and prior experience developing automated telemetry
• Familiarity with tools for Rust / C++ interoperability

Benefits

• Comprehensive healthcare (medical, dental, and vision) with premiums paid in full for employees and dependents
• 401k plan with a generous employer contribution
• Short and long-term disability coverage, basic life and AD&D insurance plans
• Medical and dependent care FSA options
• Flexible PTO policy
• Parental leave
• Generous equity offering