Staff Domain Engineer

Summary

Join Halcyon, a leading anti-ransomware company, as a Domain Staff Engineer. You will bridge the gap between Security Research and Engineering, developing and implementing innovative security features. This role involves collaborating with engineering teams on proofs-of-concept and ensuring seamless integration of new capabilities. You will need expertise in Windows low-level security development, proficiency in Rust, C, and C++, and strong communication skills. Halcyon offers a competitive salary, comprehensive benefits, and the opportunity to work on cutting-edge security solutions. As a remote-native company, Halcyon offers flexibility and the chance to make a real-world impact in cybersecurity.

Requirements

• Expertise in Windows low-level security development, including experience with kernel-mode and user-mode security mechanisms
• Strong proficiency in Rust, C, and C++, with experience working with the Windows API
• Experience developing security defenses, particularly against ransomware and malware threats
• Strong understanding of systems and software engineering best practices, including performance, maintainability, and security considerations
• Ability to bridge the gap between research and engineering, bringing ideas closer to production feasibility
• Experience working with cross-functional teams, including cloud, agent, and kernel engineering teams
• Excellent interpersonal skills—able to document, present, and advocate for security solutions within Engineering and Product teams

Responsibilities

• Assist or lead the development of initial stage product capabilities that measure and/or demonstrate the feasibility of new protections
• Work closely with agent, kernel, and cloud engineering teams to ensure approaches align with real-world constraints and implementation strategies
• Learn from Engineering’s technology stack and patterns to improve future approaches to implementation, making them more aligned with production realities
• Advocate for security solution ideas, ensuring they are well-documented, technically validated, and ready for Engineering adoption
• Drive and refine the processes by which new product capabilities transition into Engineering for full productization
• Act as a facilitator between Security Research and Engineering, ensuring that product innovations are seamlessly integrated into Engineering workflows
• Ensure that product innovations are designed to scale and integrate well within existing engineering frameworks

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