Junior Offensive Cyber Engineer

General information Requisition # R67146 Locations USA-VA-Stafford Posting Date 04/21/2026 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 Junior Offensive Cyber Engineer to perform analysis of cybersecurity packages using the Risk Management Framework (RMF) process to achieve an Authority to Operate (ATO) while supporting the Marine Corps Systems Command (MCSC) in Quantico, VA. This position is offensive in nature and works closely with government officials and senior engineers. Responsibilities include, but are not limited to: The position requires someone with Offensive Cyber experience (penetration testing/red team/exploitation) and willing to do hands-on work. Ensure system documentation reflects current system security configurations to include hardware and software components, data flow, interconnections, and ports, protocols, and services, etc. Perform Compliance reviews and analyses to verify compliance with federal requirements (e.g., EO, OMB Memos, A-130, NIST SP 800-37, 800-53, FIPS199, and FIPS-200, etc.) Perform analyses of security implementations for assigned systems pertaining to people, processes, and technologies, identify gaps and recommend solutions. Perform analyses of security implementations for assigned systems pertaining to people, processes, and technologies, identify gaps and recommend solutions Assist in the preparation and review of documentation to include System Security Plans (SSPs), Plans of Action and Milestones (POA&Ms), Authorization Recommendations (ARs), Cybersecurity Strategies (CSSs), and other A&A artifacts. Research major obstacles related to the ever-changing FISMA requirements, which customers will need to overcome and provide recommendations. Provide updates and input to the GRC SharePoint sites to include document uploads, page updates, access requests, permissions, etc. on an ongoing basis.

Minimum Requirements:

Bachelor's degree and at least 2 years of related cybersecurity experience (additional 2 years of experience can be substituted in lieu of degree): Must be compliant with DoD 8140 at an intermediate or advanced level. Thus, will need a CASP+CE, Security+, CISSP, or CISM certification. Experience and expert knowledge on NIST guidelines, FISMA, Cybersecurity principles and methodologies, Executive Orders (EO's), Office of Management and Budget (OMB) Memorandums, Federal, DoD and CISA Technical Reference Architectures, Maturity Models, Risk Management Framework (RMF), Cybersecurity Framework (CSF), technical knowledge of IT systems

Preferred Qualifications:

USMC or Navy Validator certified

OSCP / OSEP / CPTS

Certifications Experience with cloud-based environments and technologies. An analytical mind with excellent problem-solving ability. Good communication skills and have good interpersonal, organizational, and analytical skills.

Clearance Requirements:

Must Have an Active Secret with the ability to obtain Top Secret/SCI 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.