Computer Security Systems Specialist

Company: By Light Professional IT Services
Location: Fort Belvoir
Posted on: January 27, 2026

Job Description:

By Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide. Position Overview The program delivers end-to-end EFIS&T services—including survey and design through installation, security, and testing. This work spans NIPR and SIPR networks, Wi-Fi, VoIP, ISP/OSP infrastructure, and voice modernization across all CONUS Army installations. We’re looking for a Computer Security Systems Specialist to design, document, and implement cybersecurity controls for Army enterprise networks. You’ll ensure systems are engineered and configured to meet DoD, Army, and DISA security requirements, and you’ll support fielded systems through assessment, approval, and operational deployment. You’ll work closely with engineering teams, program leadership, and cybersecurity authorities to deliver secure, compliant systems ready for operational use. Responsibilities Design and plan security measures to protect systems and networks in accordance with DISA STIGs/SRGs, IAVAs, and DoDI 8100.04 Research, maintain, and manage cybersecurity artifacts, including: STIG checklists Approved operating system versions POA&Ms Hardware and software inventories Test, training, implementation, and transition/migration plans Installation team checklists Align security controls with NIST 800-53 and CIS Benchmarks Provide required cybersecurity artifacts to the GENM-A ISSM for review and approval Develop and deliver system and network diagrams (topology, physical, logical, data flow) in support of CDRL requirements Support vulnerability assessments, penetration testing, and implementation of IDS/IPS solutions Configure and validate security controls, including firewall rules and access control lists Required Experience/Qualifications Bachelor’s degree in Cybersecurity, Information Assurance, or a related IT field Four (4) additional years of relevant experience may be substituted in lieu of a degree 10 years of cybersecurity or information assurance experience, including 2 years leading cyber or IA personnel or teams Meets DoD 8570 IAT Level III certification requirements Preferred Experience/Qualifications Certifications and/or experience in Zero Trust architectures Special Requirements/Security Clearance Active TS/SCI at the time of application Travel up to 25%, as required Physical Demands Ability to lift up to 30 lbs By Light recognizes that our strength is our people. We support every employee as an individual to build strong teams across the enterprise. Our benefit package includes: Medical, Dental & Vision Coverage Wellness Program 401(k) Matching Disability (Short Term & Long Term) Employee Assistance Program Life Insurance Education & Training Generous Leave Policy (11 Federal Holidays, PTO, and Military Leave)

Keywords: By Light Professional IT Services, Montgomery Village , Computer Security Systems Specialist, IT / Software / Systems , Fort Belvoir, Maryland