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Open nowPosted 9 days ago

Information Systems Security Officer (ISSO)

Leidos1,887 open roles

Pay
$87,100 – $157,450 a year
Where
San Antonio, TX
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Your applicationOpen nowInformation Systems Security Officer (ISSO)Leidos · San Antonio, TX

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The clock on this job

Early applications get read.

12.1% of postings close within 7 days. Measured by our own scanner across the market. Leidos postings stay open a median of 7 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.5%3 days
  3. 12.1%7 days
  4. 19.1%14 days
  5. 35.6%30 days
  6. 52.7%60 days
This job: posted 9 days ago

Leidos median: 7 days open

The posting

Leidos is seeking an experienced Information Systems Security Officer (ISSO) to support an Air Force Cybersecurity Service Provider (CSSP) mission.

The ISSO will assess system cybersecurity risk and security posture, evaluate compliance with applicable cybersecurity requirements, and advise Government personnel and technical teams on risk, remediation, and security requirements. The position requires strong analytical, technical writing, communication, and presentation skills and the ability to serve as a technical expert across cybersecurity and information technology stakeholders.

The successful candidate will identify technical deficiencies, develop practical solutions, communicate customer expectations to project teams, and appropriately elevate issues requiring senior-level attention.

Primary Responsibilities

  • Advise Government personnel on the risk level and security posture of systems requesting alignment with the Air Force CSSP.
  • Support successful implementation and functionality of cybersecurity requirements and applicable information technology policies and procedures consistent with organizational mission and objectives.
  • Continuously validate organizational and system compliance with applicable policies, guidelines, procedures, regulations, and laws.
  • Review cybersecurity requirements to ensure they are appropriately incorporated into system and organizational continuity planning.
  • Identify alternative information-security strategies to address organizational security objectives.
  • Identify areas of noncompliance and assess their impact on risk and the overall effectiveness of the cybersecurity program.
  • Review policy standards and implementation strategies to ensure procedures and guidelines comply with applicable cybersecurity policies.
  • Ensure Plans of Action and Milestones (POA&Ms) and remediation activities provided by system owners are established and appropriately addressed.
  • Review cybersecurity program plans and requirements for supported environments.
  • Analyze work plans for completeness and support development of status reports and quality-control activities.
  • Proactively identify technical deficiencies and develop practical, workable solutions.
  • Communicate customer expectations to project teams and escalate appropriate issues to senior project personnel.
  • Coordinate across technical, cybersecurity, program, and Government stakeholders to resolve issues and support mission objectives.
  • Serve as a technical cybersecurity resource with potential specialization in IT infrastructure or security services.
  • Perform other duties as assigned.

Basic Qualifications

  • Bachelor’s degree or higher in Cybersecurity or a related field.
  • 5+ years of relevant cybersecurity experience. Additional related education or certifications may be considered in lieu of experience
  • Current Top Secret/SCI security clearance with ability to obtain additional or higher read-ins as required.
  • Must meet applicable DoD 8140 / Defense Cyber Workforce Framework (DCWF) certification or qualification requirements. / IAT Level II certification.
  • Strong communication, technical writing, analytical, and presentation skills.
  • Knowledge of national and international laws, regulations, policies, and ethical requirements applicable to cybersecurity.
  • Knowledge of the operational impacts associated with cybersecurity incidents and security deficiencies.
  • Knowledge of cybersecurity principles used to identify and manage risk.
  • Knowledge of cybersecurity risk-management processes.
  • Knowledge of disaster recovery and Continuity of Operations (COOP) planning.
  • Knowledge of incident-response and incident-handling methodologies.
  • Knowledge of the DoD Risk Management Framework (RMF).
  • Knowledge of enterprise incident-response programs, roles, and responsibilities.
  • Knowledge of Personally Identifiable Information (PII) security requirements.
  • Understanding of eMASS and Department of Defense authorization/accreditation packages.

Preferred Qualifications

  • CSSP Infrastructure Support certification.
  • Experience performing ISSO or ISSM functions.
  • Experience with Cyber Network Defense and Analysis.
  • Experience with cloud-security engineering.
  • Prior Air Force or Department of Defense cybersecurity experience.
  • Agile training or experience.

ENAMOR

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:

October 14, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $87,100.00 - $157,450.00

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.

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