Information Systems Security Officer - ISSO

Information System Security Officer (ISSO)

Leidos Defense is seeking a talented Information System Security Officer (ISSO) to join a diverse team committed to the sustainment of critical Army systems. The ISSO will support our Task Force 2200 (TF2200) program, report to the TF2200 Operations Manager, and provide cybersecurity support to the TF2200 program.

• Responsible for meeting both regulatory and non‑regulatory compliance demands.
• Management and enforcement of information security policies, conducting security and risk assessments using security frameworks (e.g., NIST, RMF, Common Criteria), mitigating risk via security controls, vulnerability management (scanning, assessment, reporting, and mitigation verification).
• Protect information and maintain security controls for TF2200 systems to reduce risk.
• Support IA continuous monitoring tasks (auditing, security patching, scanning) to ensure compliance with security policies and procedures.
• Participate in Engineering Change Process (ECP) to address baseline system changes.
• Support system accreditation inspections and activities with stakeholders.
• Respond to and perform IT troubleshooting of TF2200 systems as required.
• Assist with maintaining the security posture of TF2200 systems by performing regular cybersecurity updates.
• Support the RMF authorization process, including developing and maintaining artifacts for the IS Body of Evidence (BoE).
• Perform in‑office IT tasks as required and assist team members.

• Candidate must be a U.S. Citizen and hold an active TS/SCI security clearance.
• A relevant BS degree with 4+ years of applicable experience is required.
• Solid understanding of the Risk Management Framework (RMF).
• Experience interpreting and applying government security regulations such as NIST SP 800.53 Rev 5 and DCSA NISPOM to information systems.
• DoDM 8570.01 IAT Level II / DoD 8140 Cybersecurity Intermediate Certificate (Security+) is required.
• Highly organized, self‑motivated, with excellent documentation skills and the ability to communicate effectively with customers and team members at all levels.
• Some travel may be required, up to 10%.
• Candidate must be a resident of the Colorado Springs, CO area.
• Significant hands‑on experience implementing security, hardware, software, and network components.
• Experience implementing Security.
• Strong technical writing skills.
• Experience implementing Security Technical Implementation Guides (STIG) on Windows and Linux.

• Familiarity with various cybersecurity tools (SCC, ACAS, Evaluate STIG, STIG Viewer, etc.).
• Experience with Army Space Control systems.
• Experience with DoD customers and their requirements, primarily USASMDC.