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Information System Security Officer

Leidos
Huntsville, United Statesfull_timeVerifiedPosted 23 Jan 2026
💰 $157,450/yr($87,100/yr$157,450/yr)

About the role

Leidos Dynetics, within our Corporate Information Security Office and reporting to our Digital Modernization sector, is seeking a talented Information System Security Officer (ISSO) to join a diverse team to create unique solutions for complex problems. With offices across the United States engaging in the defense, space, cyber and commercial fields, Leidos Dynetics provides responsive, cost-effective engineering, scientific and IT solutions.

The Information System Security Officer (ISSO) will be responsible for supporting our Classified Information System Cybersecurity/information Assurance Program. You will report to the Information System Security Manager (ISSM) on all aspects of classified information system security compliance.

Location: All work will be performed on site in Huntsville, AL

Clearance: You must currently hold an active Secret clearance to be considered for this position You must also be eligible to obtain a Top Secret clearance.

Primary Responsibilities

The ISSO's primary duties will consist of managing the day-to-day compliance of our classified information systems by:

  • Auditing information systems to ensure compliance with security policies and procedures while reporting any discrepancies to the ISSM, P-ISSM, ISO or FSO.

  • Assisting in the Risk Management Framework (RMF) authorization process by developing and maintaining artifacts for the IS Body of Evidence (BoE).

  • Reviewing and approving Configuration Management (CM) requests, within delegated authority, for all related hardware, software, and security‑relevant functions, ensuring proper documentation and maintenance throughout the CCB approval process

  • Assisting with sanitization and release of hardware in accordance with security policies or Authorizing Official (AO) guidance.

  • Testing/evaluation and application of required technical security controls and periodic inspections of information systems

  • Assessing and monitoring system compliance, auditing, security plan development and delivering information systems security education and awareness

  • Investigating information system security violations and help prepare reports specifying corrective and preventative actions

  • Conducting technical and administrative assessments

  • Integrating new cybersecurity processes, procedures, and tools

  • Support the creation, review and update of cybersecurity documentation and other technical writing

Basic Qualifications

  • Bachelor's Degree and a minimum of 4 years' prior relevant experience; equivalent experience may be considered in lieu of degree.

  • Must possess current CompTIA Security+ CE certification or equivalent.

  • Three years of applicable, related experience in computer-related discipline

  • Highly organized and self-motivated with excellent documentation skills and the ability to work with minimal supervision.

Relevant Experience Considered:

  • Cybersecurity, systems security or hardening, Information Technology

  • Compliance-based auditing using the Risk Management Framework (RMF), DCSA Assessment and Authorization Guide (DAAG), National Industrial Security Program Operating Manual (NISPOM)

  • Experience working with and/or supporting computer technologies (such as: databases, operating systems, computer network hardware, software programs, hardware troubleshooting or electronics)

  • Physical security, Project or program management, office management, senior administration, or account management

  • Experience with security configurations across multiple operating systems in various environments, to include Windows, Linux, utilizing Active Directory/Group Policy, Delinea, etc. is required.

Preferred Qualifications:

  • Experience with IT (Windows, Linux) and/or security related certifications (CISSP, CISM, CISA, etc.) is preferred.

  • Experience working in DoD classified operating and/or laboratory environments

  • Experience with various information system security tools that address vulnerability analysis and mitigation. These may include SPLUNK, Trellix, SolarWinds, Tenable, SCAP, STIG Viewer.

  • Familiarity with implementation of Government directives and policies derived from NIST, STIG, DoD, or other Government Regulatory compliance standards within a professional industry

  • Experience in the execution of the Assessment & Authorization processes, as defined within the Risk Managed Framework (RMF), eMASS

  • Experience providing technical security consultation for complex, cross-domain, heterogeneous classified networked environmen

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Company

Leidos

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