General program information and/or position overview. The qualified candidate will be responsible for supporting Leidos G&C's cybersecurity programs. In support of NSWC Dahlgren Division Combined Integrated Air and Missile Defense (CIAT) program, the candidate will assist in identifying and implementing security controls, performing risk assessments, and developing artifacts to obtain Authority to Operate (ATO) as part of the Risk Management Framework (RMF). Candidate will also perform duties in support of cybersecurity initiatives, such as, Independent Research and Development (IR&D), and operating cybersecurity testing environment.

Primary Responsibilities:

Assist in maintaining the CIAT system's cybersecurity posture in regard to availability, integrity, authentication, confidentiality, and non-repudiation.

Support the execution of all cyber management functions in strict compliance with applicable DoD, DoN, SECNAV, and OPNAV directives.

Contribute to the preparation and maintenance of the Risk Management Framework (RMF) package and other accreditation support documentation.

Help generate and maintain the Cyber Applicable Requirements Verification Matrix (RVM) and assist in documenting cyber-related risks.

Assist in the application of Security Technical Implementation Guides (STIGs), the hardening of Operating Systems, and the implementation of firewall rules.

Provide hands-on support for the system's cyber hardware and software suites.

Conduct cybersecurity testing under the direction of the lead engineer and assist in documenting results in Cyber Applicable Test Reports.

Support the development and updating of system security documentation, training materials, and user guides.

Basic Qualifications:

• DoD security clearance – Secret level
• A Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or a related technical field is preferred and 2-4 years of relevant experience.
• Foundational knowledge of the Risk Management Framework (RMF) and an understanding of DoD/DoN cybersecurity directives.
• Familiarity with vulnerability scanning tools (e.g., Nessus) and patch management.
• Basic understanding of OS hardening, networking concepts, and system security engineering principles.
• Strong organizational skills with the ability to contribute to clear technical documentation, procedures, and reports.
• Excellent teamwork and communication skills with the ability to effectively support a lead engineer in a government contracting environment.
• Must be willing and able to achieve DoD 8570/8140 compliance (e.g., CompTIA Security+) within 6 months of starting role

Preferred Qualifications:

• Experience with Security Information and Event Management (SIEM) tools.
• Familiarity with secure coding practices or experience with secure code analysis tools.
• Experience working in a DoD or government contracting environment.
• Current CompTIA Security+, Certified Ethical Hacker (CEH), or Certified Information Systems Security Professional (CISSP) certification.

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Original Posting:

April 3, 2026

Pay Range:

Pay Range $69,550.00 - $125,725.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.