Staff Engineer, Endpoint Agent

What we do: Halcyon is the industry’s first dedicated, adaptive security platform that combines multiple proprietary advanced prevention engines along with AI models focused specifically on stopping ransomware. Who we are: Halcyon was formed in 2021 by a team of cyber industry veterans after battling the scourge of ransomware (and advanced threats) for years at some of the largest global security vendors. Comprised of leaders from Cylance (now Blackberry), Accuvant (now Optiv), Fireye and ISS X-Force (now IBM), Halcyon is focused on building products and solutions for mid-market and enterprise customers. As a remote-native, completely distributed global team, we recognize great talent can exist anywhere. We invite you to apply to a job you’re interested in and we'll work a plan to meet your needs. The Role: Halcyon is redefining what security software can do, with a focus on anti-ransomware innovation. We're seeking a Staff Engineer to help lead the design and development of our cross-platform endpoint agent. This role is instrumental in shaping both the technical architecture and future direction of our Windows, Linux, and macOS protection capabilities. Responsibilities: Own the technical vision and architecture of Halcyon’s cross-platform endpoint agent, covering user-space services, kernel drivers, and tooling Collaborate with cross-functional teams including researchers, product managers, and engineers to design and implement cutting-edge anti-ransomware features Lead complex, cross-platform engineering efforts, balancing performance, scalability, and security Mentor and support the growth of engineers across the endpoint team Troubleshoot and resolve complex, high-impact technical issues during feature development Define, implement, and improve engineering processes and standards across the team Champion technical excellence and product quality, advocating for best practices in all aspects of development Skills and Qualifications: Experience developing high-quality code in Rust (preferred) or C++ Proven track record developing endpoint security products Experience in a staff-level or principal engineering role , with a focus on architecture and cross-team collaboration Expert-level knowledge in low-level systems, including kernel or driver development on Windows, Linux, or macOS Strong written and verbal communication skills, with the ability to influence technical and non-technical stakeholders Halcyon offers the following benefits to eligible employees: 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. Base Salary Range : $220,000- $275,000 In accordance with applicable state and federal laws, the range provided is Halcyon’s reasonable estimate of the base compensation for this role. The actual amount may differ based on non-discriminatory factors such as experience, knowledge, skills, abilities, and location. Base pay is one part of the total package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and equity in the Company. We understand it takes a diverse team of highly intelligent, passionate, curious, and creative people to develop the exceptional product we are building. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity employer. EEO Statement: Halcyon is an equal opportunity employer and welcomes applications from diverse candidates. We are committed to creating an inclusive environment for all employees. #J-18808-Ljbffr

Experience: 5 years required

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