Endpoint Security Engineer - Senior

Job Description Everforth ECS Federal is seeking a Senior Endpoint Security Engineer to support a mission-focused federal cybersecurity program in Washington DC. Please note: This position is contingent upon contract award. Join Everforth ECS Federal as a senior endpoint security engineer protecting mission-critical federal environments. You will lead secure endpoint and data transfer controls supporting national security and law enforcement systems while helping strengthen security operations, compliance, and mission assurance. The Senior Endpoint Security Engineer will lead endpoint security and cross-domain solution support, including secure transfer, removable media control, auditing, policy enforcement, and compliance activities. This role provides senior technical support for endpoint protection in secure mission environments and helps ensure endpoints remain hardened, monitored, and aligned with mission and security requirements. The Senior Endpoint Security Engineer will lead endpoint hardening, policy enforcement, incident investigation, secure data transfer controls, auditing, compliance documentation, and endpoint security process improvements. This position will also mentor junior staff, support remediation activities, troubleshoot complex endpoint security issues, and work closely with cybersecurity teams, system administrators, ISSOs, incident responders, service desk personnel, and program leadership to reduce risk across the environment. This role requires a hands-on senior cybersecurity professional with experience supporting endpoint protection, secure data transfer, removable media controls, auditing, compliance, and incident response in secure or regulated environments. The ideal candidate will bring strong technical judgment, documentation discipline, mentoring ability, security awareness, and the ability to lead endpoint security operations in a classified or sensitive federal mission environment. Required Skills Minimum 7 years endpoint security or cybersecurity engineering experience Experience with endpoint protection, secure transfer, auditing, or compliance controls; Security+ required Desired Skills CISSP, CASP+, CSSLP, Microsoft security, Tanium, CrowdStrike, NSA/CNSS, cross-domain solutions, classified environment, or secure data transfer experience. Equity, Diversity, and Inclusion Statement: ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law. Everforth ECS is the federal segment of Everforth, a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow. We Value Attracting and developing top talent and high-performing teams Fostering a culture that is engaging, accountable, and mission-driven #J-18808-Ljbffr ECS