Information System Security Specialist

Leidos • Quantico, VA

1d • Onsite

About The Position

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Requirements

• Bachelor's and 2 years of relevant experience. Additional years of experience are accepted in lieu of degree.
• DoD 8570.01-M / 8140 compliant certification (e.g., Security+, CISSP, or equivalent)
• Minimum 3 years of experience in Cybersecurity, Engineering, Test & Evaluation (T&E), or A&A/C&A
• Working knowledge of RMF and/or experience with DIACAP
• Experience with IA tools such as eMASS and ACAS
• Familiarity with ATO documentation, security artifacts, and traceability requirements
• Ability to assess systems for compliance with classified processing requirements
• Must have active DoD Secret clearance or higher.
• Must be able to report daily to office in Quantico, VA.

Nice To Haves

• IAT Level III certification
• Navy Qualified Validator (NQV) certification or ability to obtain
• Experience supporting Operational Technology (OT) or control systems A&A
• 5+ years of experience in A&A / RMF environments
• Experience in DoD or USMC cybersecurity operations
• Active TS/SCI clearance

Responsibilities

• Support Information Assurance (IA) and cybersecurity processes across system lifecycles
• Implement and maintain RMF-based A&A activities, including legacy DIACAP where applicable
• Develop and maintain ATO packages, including artifacts and traceability documentation
• Evaluate and validate security controls and solutions for compliance with DoD requirements
• Utilize IA tools such as eMASS and ACAS to support authorization and continuous monitoring
• Ensure systems comply with security policies, STIGs, and configuration management processes
• Monitor and maintain the operational security posture of assigned systems
• Support change management and configuration control to ensure continued compliance
• Assist in developing and implementing system security policies and procedures
• Coordinate cybersecurity activities supporting mission and command objectives

Benefits

• Pay and benefits are fundamental to any career decision.
• That's why we craft compensation packages that reflect the importance of the work we do for our customers.
• Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.
• More details are available here.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees