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Junior Offensive Cyber Engineer

MANTECH, Stafford, VA, United States


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

Perform offensive cyber activities, including penetration testing, red team exercises, and exploitation; must be comfortable with hands‑on work.

Ensure system documentation reflects current security configurations for hardware, software, data flow, interconnections, ports, protocols, and services.

Conduct compliance reviews and analyses to verify adherence to federal requirements (e.g., EO, OMB memos, NIST SP 800‑37, 800‑53, FIPS‑199, FIPS‑200).

Analyze security implementations for assigned systems in regard to people, processes, and technologies; identify gaps and recommend solutions.

Assist in preparing and reviewing documentation such as 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 evolving FISMA requirements and recommend mitigation strategies.

Maintain the GRC SharePoint sites, including document uploads, page updates, access requests, and permissions.

Minimum Requirements

Bachelor’s degree and at least two years of related cybersecurity experience (or equivalent experience without a degree).

Compliance with DoD CompTIA 8140 at an intermediate or advanced level; must hold a CASP+CE, Security+, CISSP, or CISM certification.

Expert knowledge of NIST guidelines, FISMA, cybersecurity principles, Executive Orders, OMB memorandums, federal, DoD, and CISA technical reference architectures, maturity models, the RMF, and the CSF; technical knowledge of IT systems.

Preferred Qualifications

USMC or Navy Validator certification.

OSCP, OSEP, or CPTS certifications.

Experience with cloud‑based environments and technologies.

Strong analytical mind and excellent problem‑solving ability.

Good communication, interpersonal, organizational, and analytical skills.

Clearance Requirements
Must have an active Secret clearance with the ability to obtain Top Secret/SCI.

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