Cybersecurity Engineer - Senior with Security Clearance

Cybersecurity Engineer – Senior Location: Onsite | Washington, DC Clearance: Active TS/SCI with CI Polygraph Employment Type: Full-time, salaried, with full benefits ________________________________________________________________________________ About the Company: Our customer is a mission-driven technology company transforming how the U.S. defense and intelligence community leverages artificial intelligence. The company integrates cutting-edge AI, next-generation sensors, and advanced data solutions into operational environments—delivering capabilities that matter at the speed of mission. The team is built from seasoned operators, technologists, and problem-solvers who thrive in small, fast-moving groups. They are deeply connected to the mission, move with urgency, and empower their people to take ownership. The problems they tackle are complex and high impact: accelerating decision-making, enhancing warfighter effectiveness, and shaping the future of defense technology. ________________________________________________________________________________ About the Role: The Senior Cybersecurity Engineer will lead the design, implementation, and continuous hardening of cybersecurity architectures for AI/ML systems deployed across classified networks, including JWICS. This role requires balancing robust security protections with mission effectiveness—ensuring AI-enabled solutions remain resilient, compliant, and trusted in operational environments. Senior engineers are expected to operate hands-on while also mentoring junior teammates, driving security frameworks, and advising stakeholders across the Client’s program. The position requires initiative, adaptability, and the ability to anticipate threats in a dynamic national security context. ________________________________________________________________________________ Primary Responsibilities: • Design and implement security architectures for AI/ML systems in classified environments • Conduct security assessments and penetration testing of AI applications • Develop security policies and procedures specific to AI/ML workloads • Lead incident response activities and forensic analysis for AI system compromises • Implement advanced threat detection and monitoring solutions • Ensure compliance with federal security standards (NIST, DoD, IC directives) • Mentor junior cybersecurity personnel and provide technical guidance • Coordinate with stakeholders on security requirements and risk assessments ________________________________________________________________________________ Required Experience: • Active TS/SCI clearance with ability to obtain a CI Polygraph. • Typically 10+ years of cybersecurity experience, preferably within DoD/IC environments. • Professional certifications such as CISSP, CISM, CEH, or equivalent. • Deep knowledge of network security, cryptography, and secure coding practices. • Experience with SIEM, vulnerability scanners, and penetration testing toolsets. • Understanding of AI/ML security considerations, including adversarial threats. • Hands-on experience securing cloud environments (AWS preferred). • Ability to thrive in high-tempo, ambiguous environments while maintaining mission focus. ________________________________________________________________________________ Preferred Experience: • Prior military service or direct support to DoD/IC programs. • Background in securing distributed systems, containerized workloads, and real-time data platforms. • Familiarity with Responsible AI frameworks and model security practices. • Strong communication skills and ability to operate as a “Swiss-army knife” in small, fast-moving teams. ________________________________________________________________________________ Benefits: • Equity participation • 401(k) retirement plan • Unlimited paid time off (PTO) • Paid parental leave • Paid holidays • Comprehensive medical, dental, vision, and life insurance • Short- and long-term disability coverage