Information System Security Officer

Leidos; Huntsville (AL); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos Dynetics CIS Team seeks an ISSO to support classified information system security compliance on-site in Huntsville, AL. You will report to the ISSM and help maintain RMF artifacts, security controls, and documentation.

Requirements include an active Top Secret clearance with SCI eligibility potential, DoD 8140/8570 IAT II certification, and 4+ years of relevant experience in cybersecurity and information assurance.

Qualifications

• BS degree and at least 4 years of applicable, relevant experience.
• Active Top Secret clearance with ability to obtain SCI clearance and Polygraph per hire.
• DoD 8140/8570 IAT II (Security+ce or equivalent) is required.

Responsibilities

• Assess and monitor system compliance, auditing, security plan development, and security awareness.
• Investigate information system security violations and prepare corrective action reports.
• Conduct technical and administrative assessments and implement new cybersecurity processes.
• Support RMF authorization artifacts and BoE documentation.
• Manage CM requests and maintain security configurations across systems.
• Assist sanitization and release of hardware per policy, and support testing of security controls.

Skills

RMF compliance

Security+ / DoD 8570 IAT II

Windows & Linux security

Information Assurance

Education

BS degree in a computer-related discipline

Tools

SolarWinds

Tenable

SCAP

Job description

Description

Leidos Dynetics CIS Team, reporting through the Digital 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 provides responsive, cost-effective engineering, scientific and IT solutions.

In this role, you 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 hold an active Top Secret clearance eligibility to obtain SCI eligibility and undergo a Polygraph clearance investigation post hire.

Primary Responsibilities

• 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
• Supporting the creation, review and update of cybersecurity documentation and other technical writing
• 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, 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 (within authority) Configuration Management (CM) requests of all associated hardware, software, and security relevant functions is maintained and documented as part of 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.

Basic Qualifications

• BS degree and at least 4 years of applicable, relevant experience in a computer-related discipline.
• Must currently hold an active Top Secret clearance to be considered, with the ability to obtain SCI clearance and undergo a Polygraph investigation if hired.
• Must hold current DoD 8140/8570 IAT II (Security+ce or equivalent).

Relevant Experience Considered:

• Cybersecurity, systems security or hardening, Information Technology
• Compliance-based auditing using the Risk Management Framework (RMF), DCSA Assessment and Authorization Process Manual (DAAPM), National Industrial Security Program Operating Manual (NISPOM) or Joint Special Access Program (SAP) Implementation Guide (JSIG)
• 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, UNIX, utilizing Active Directory/Group Policy, Centrify, etc. is required.
• Highly organized and self-motivated with excellent documentation skills and the ability to work with minimal supervision.

Preferred Qualifications

• Experience with IT (Windows, Linux) 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 Solarwinds, Tenable, SCAP.
• 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)
• Experience providing technical security consultation for complex, cross-domain, heterogeneous classified networked environments in collaboration with internal/external Customers, Information Technology (IT)
• Familiarity with the execution and management of cyber incident response; preservation, containment, and eradication

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.

Original Posting:

November 5, 2026

Pay Range:

Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline onlyand 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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, www.Leidos.com

Pay and 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 at www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.