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Information Systems Security Officer (ISSO) III

GDIT

Information Systems Security Officer (ISSO) III

full-timePosted: Sep 1, 2026Updated: Sep 2, 2026USA TX Lackland AFB

Job Description

Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret/SCIClearance Level Must Be Able to Obtain:Top Secret SCI + PolygraphPublic Trust/Other Required:NoneJob Family:Cyber and IT Risk ManagementJob Qualifications:Skills:Information Security, Information Security Management, Information System SecurityCertifications:NoneExperience:5 + years of related experienceUS Citizenship Required:YesJob Description:The Information Systems Security Officer (ISSO) III is responsible for ensuring the appropriate operational security posture is maintained for an information system and as such, works in close collaboration with the ISSM and ISO. The position shall have the detailed knowledge and expertise required to manage the security aspects of an information system and, in many organizations, is assigned responsibility for the day-to-day security operations of a system.This will include physical and environmental protection, personnel security, incident handling, and security training and awareness. It will be required to work in close coordination with the ISSM and ISO in monitoring the information system(s) and its environment of operation to include developing and updating the authorization documentation, implementing configuration management across authorization boundaries. This will include assessing the security impact of those changes and making recommendation to the ISSM. The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities.Performance shall include:Assist the ISSM in meeting their duties and responsibilities.Prepare, review, and update authorization packages.Ensure approved procedures are in place for clearing, sanitizing, and destroying various types of hardware and media.Notify ISSM when changes occur that might affect the authorization determination of the information system(s).Conduct periodic reviews of information systems to ensure compliance with the security authorization package.Coordinate any changes or modifications to hardware, software, or firmware of a system with the ISSM and AO/DAO prior to the change.Monitor system recovery processes to ensure security features and procedures are properly restored and functioning correctly.Ensure all IS security-related documentation is current and accessible to properly authorized individuals.Ensure audit records are collected, reviewed, and documented (to include any anomalies)Attend required technical and security training (e.g., operating system, networking, security management) relative to assigned duties.Execute the cyber security portion of the self-inspection, to include security coordination and review of all system assessment plans.Identify cyber security vulnerabilities and assist with the implementation of the countermeasures for them.Prepare reports on the status of security safeguards applied to computer systems.Perform ISSO duties in support of in-house and external customers.Conduct continuous monitoring activities for authorization boundaries under your preview.Assist Department of Defense, National Agency and Contractor organizations with the development of assessment and authorization (A&A) efforts.Experience:5+ years related experience.2+ years SAP experience required.Prior performance in roles such as System, Network Administrator or ISSO.Education:Bachelor’s degree OR Associate’s degree in a related area + 2 years’ experience OR equivalent experience (4 years)Certifications:Must meet position and certification requirements outlined in DoD Directive 8570.01-M for Information Assurance Technician Level II or Information Assurance Manager II within 6 months of the date of hireClearance Required to Start:TS/SCI requiredMust be able to Attain – TS/SCI with CI PolygraphGDIT IS YOUR PLACE:401K with company matchComprehensive health and wellness packagesInternal mobility team dedicated to helping you own your careerProfessional growth opportunities including paid education and certificationsCutting-edge technology you can learn fromRest and recharge with extra paid vacation and holidays#AirforceSAPOpportunitiesThe likely salary range for this position is $97,968 - $127,880. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.Scheduled Weekly Hours:40Travel Required:10-25%Telecommuting Options:OnsiteWork Location:USA TX Lackland AFBAdditional Work Locations:Total Rewards at GDIT:Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. Our Identity Verification Process:As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes. About Our Work:We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Locations

  • USA TX Lackland AFB

Salary

97,968 - 127,880 USD / yearly

Required Qualifications

  • Prior performance in roles such as System, Network Administrator or ISSO. (experience)
  • TS/SCI required (experience)
  • Must be able to Attain – TS/SCI with CI Polygraph (experience)
  • Must be able to Attain – TS/SCI with CI Polygraph (experience)

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