Cyber Security Engineer

General information Requisition # R67366 Locations USA-VA-Quantico Posting Date 05/04/2026 Security Clearance Required Secret Remote Type Onsite Time Type Full time Description & Requirements Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we've been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Cyber Security Engineer to join our team in Stafford, VA. The successful candidate will be responsible for providing technical expertise in designing and implementing security solutions across on-premises data centers and cloud environments (AWS, Azure), with a strong focus on F5 Web Application Firewall (WAF) and the DoD Secure Cloud Computing Architecture (SCCA). The role involves ensuring compliance with DoD security standards by evaluating DISA STIGs, managing system vulnerabilities through IAVMs, and hardening the overall cybersecurity posture Marine Corps enterprise networks. Responsibilities include but are not limited to: Evaluate and implement security requirements from DISA STIGs for F5, cloud, and network environments. Manage F5 system patching and version upgrades to comply with IAVM notices. Design, configure, and test security solutions, including

F5 WAF/ASM

policies and cloud-based DMZs. Ensure all systems, software, and configuration changes adhere to DoD/DON cybersecurity directives. Support all Cybersecurity Workforce (CSWF) reporting and maintain required IA certifications. Achieve and maintain all required Information Assurance (IA) certifications and training for privileged access to the

MCEN Minimum Qualifications:

Bachelor's Degree with at least 4 years of related experience in cloud architectures that conform to the DoD SCCA, including Virtual Data Center Security Stacks (VDSS). An additional 4 years of experience may be substituted in lieu of degree. Contribute to and maintain required cloud certifications, which include advanced (e.g., AWS/Azure Architect Professional/Expert), intermediate (e.g., AWS/Azure Architect Associate), and foundational levels. Experience implementing and managing security controls for F5 Big-IP modules (ASM, APM, LTM). DoDD 8140/8570 compliant/certified (e.g., current Security+ certification)

Preferred Qualifications:

Current experience supporting Marine Corps Enterprise Networks F5 Certified Technical Specialist certifications for ASM (Test 303), APM (Test 304), and LTM (Tests 301A/301B).

Clearance Requirements:

An active DoD Secret clearance is required for this position.

Physical Requirements:

Must be able to remain in a stationary position 50%. Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.