Job Details: Job Location: PEO SOLDIER (Fort Belvoir) - Fort Belvoir, VA, Position Type: Full Time, Education Level: Graduate Degree, Salary Range: $110000.00 - $116000.00Salary, Travel Percentage: Up to 25%, Job Shift: Day, Job Category: Government, Mayvin is seeking a Senior Cybersecurity Engineer to support the United States Army and JIATF-401 at Fort Belvoir, VA to support the development of C-UAS systems and capabilities across multiple operational and developmental environments.  The candidate will help protect critical infrastructure, the warfighter, and protect the U.S. from emerging unmanned aircraft system (UAS) threats.  This role operates in a fast paced environment supporting the DoW, the Interagency, and the Defense Industrial Base to strengthen cyber readiness across the C-UAS mission space.    Must be a U.S. Citizen. Must have an active Secret clearance.   Responsibilities: Senior cybersecurity engineering subject matter expert across enterprise, operational, cloud, hybrid, and vendor-supported environments  Lead and advise on cybersecurity architecture, system design, integration, testing, troubleshooting, and risk-informed technical decision-making Translate mission / operational requirements into secure system design considerations, cybersecurity requirements, and implementation priorities Lead / support technical discussions involving network architecture, cloud security design, boundary protection, system interoperability, and security control implementation Assess cybersecurity risks across government-managed and vendor-managed systems and recommend mitigation strategies to support operational needs Manage cybersecurity integration for initial authorization, reauthorization, major changes, and ATO sustainment Review and advise on security architectures, implementation approaches, control inheritance strategies, test plans, technical artifacts, and assessment results Participate in PMRs, Design Reviews, IPTs, engineering discussions, and senior stakeholder engagements Coordinate with Program Management Offices (PMOs), mission owners, system owners, security teams, and vendors to resolve issues affecting system authorization, compliance, and interoperability Provide expert consultation on cybersecurity impacts associated with cloud adoption, cross-domain/system interfaces, externally provided services, and defense industrial base partnerships Align technical solutions with applicable DoW, Joint, interagency, and organizational cybersecurity requirements Communicate effectively with technical and non-technical stakeholders, senior leaders, action officers, engineers, program personnel, and contractors, etc. : Required Qualifications: Master’s degree in a related field – cybersecurity, information assurance, engineering, computer science preferred Minimum of 7 years of related experience Active CISSP certification Experience in cybersecurity engineering, security architecture, or a closely related field Experience supporting RMF and ATO activities for DoW information systems Strong understanding of cybersecurity risk management, security control implementation, and system authorization processes Strong written and verbal communication skills, including the ability to engage credibly with technical and non-technical stakeholders   About Mayvin Mayvin is more than a workplace—it’s a community built on innovation, ingenuity, and impact.  Enjoy outstanding benefits and amenities, a truly supportive work environment, and continuous opportunities for professional growth. Your contributions are recognized and rewarded, and—most importantly—your voice matters. Here, you're treated with the dignity and respect you deserve. Mayvin is proud to support the national security mission of the United States through exceptional service to the Departments of War, Homeland Security, and Justice. Join us in solving the nation's toughest challenges—because at Mayvin, #PeopleMatter and it's time to #ReimagineYourMission.