Information System Security Officer (ISSO)

Amentum; Sunnyvale (CA); On-site; USD 175,000 - 200,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum is seeking an Information System Security Official for a contract at NASA, Sunnyvale, CA. The ISSO services provide cybersecurity SMEs to support NASA information systems.

The role requires an active Top Secret clearance with SCI eligibility, a BS degree and 5 years in cybersecurity design and development, and strong communication skills. Compensation ranges from $175K to $200K with comprehensive benefits and growth opportunities.

Qualifications

• Active Top Secret US Government Clearance with ability to obtain SCI; US citizenship required
• Bachelor of Science degree with 5 years of cybersecurity design and development experience
• Strong oral and written communication skills
• SCI clearance eligibility (desired)
• Experience with NASA Security/ISSO roles or RISCS/A&A processes (desired)
• DoD 8140 IAT or DoD 8570 IAT Level II certification or higher (desired)

Responsibilities

• Develop and maintain detailed System Security Plans (SSP) and security documentation
• Assist ISO/ISSM to ensure timely patching and updates per Federal/NASA requirements
• Support continuity/restoration by prioritizing essential system functions
• Provide guidance on security policies, procedures, and practices
• Document and update security design implementations for RMF
• Conduct PTA/PIA as required
• Review cyber threat reports to identify mitigations
• Contribute to RMF activities and related documentation (POA&M, RBD)
• Evaluate cloud providers’ security posture and applicable restrictions
• Prepare POA&Ms and RBDs for SSP controls in RISCS
• Review contingency plans and test system controls
• Analyze system logs and perform routine audits
• Remediate critical vulnerabilities identified by SOC MARs
• Install security patches and OS upgrades
• Provide IT security support to communications systems
• Assist in building and updating SSP, Contingency, DR Plans, risk reports
• Support A&A process by preparing documentation and tracking POA&Ms

Skills

Clearance communication

Education

Bachelor of Science degree

Job description

Amentum is seeking an Information System Security Official for a contract at the National Aeronautics and Space Administration (NASA), Sunnyvale, CA location. The Information System Security Official (ISSO) services provide cybersecurity Subject Matter Experts (SMEs) to support NASA Information Systems.

Amentum is a leading provider of engineering, scientific, and program management support services to some of the top agencies in the U.S. Government, including NASA, Defense Advanced Research Projects Agency (DARPA), the Department of Homeland Security and the Intelligence Community.

Job Duties and Responsibilities:

• Develop and maintain detailed and accurate System Security Plans (SSP), including security documentation for component and interface specifications, to support appropriate cybersecurity and privacy throughout the information systems’ life cycle
• Assist the Information System Owner (ISO) and Information System Security Manager (ISSM) in ensuring that all components of the information system are appropriately updated and patched in accordance with Federal and NASA requirements
• Support the Government with identifying and prioritizing essential system functions or sub-systems required to support essential capabilities or business functions for restoration or recovery after a system failure or during a system recovery event based on overall system requirements for continuity and availability
• Provide technical guidance to address the adequacy and effectiveness of information security policies, procedures, and practices
• Ensure that cybersecurity design and development activities are properly documented (providing a functional description of security implementation) and updated as necessary
• Ensure Privacy Threshold Assessments (PTA) and Privacy Impact Assessments (PIA) are conducted as required
• Review cyber intelligence threats reports, including but not limited to SOC MARs, SARs, and DHS/CISA Emergency Directives, in order to identify threats to the information system and develop mitigations
• Provide subject matter expertise and recommendations as part of RMF process activities and development of related documentation (e.g., system life-cycle support plans, concept of operations, operational procedures, and maintenance training materials)
• Evaluate cloud service providers’ security posture and develop associated recommendations for restrictions, conditions and control responsibility parsing
• Write Plan of Action and Milestones (POA&M’s) and Risk Based Decisions (RBD’s) for the System Security Plan (SSP) controls within the NASA Risk Information Security Compliance System (RISCS) tool.
• Ensure contingency plans and system controls are reviewed and tested in accordance with the Agency requirements.
• Analyze system logs to identify potential issues and perform routine audits of systems and applications.
• Ensure critical vulnerabilities that require immediate attention are remediated, as identified in the Security Operation Center (SOC) Mitigation Action Recommendation (MAR).
• Ensure the installation of security/vulnerability patch updates, operating system level patches and upgrades to include new versions.
• Provide IT security support to communication systems as needed and serve as a technical resource to Information System Security Officer(s) (ISSO) and other IT professionals
• The contractor shall assist in the development and updating of the System Security Plan, Contingency Plan, Disaster Recovery Plans, Risk Assessment Report, annual review package, work instructions, policies, and procedural guides affecting the overall IT and security posture of the environment
• Support the Assessment and Authorization (A&A) process by preparing associated documentation, building, and tracking Plan of Action and Milestones (POA&M), and monitoring A&A activities

Required Qualifications:

• Must have an active Top Secret US Government Clearance, with the ability to obtain an SCI Clearance. Please note US Citizenship is required to maintain a Top Secret Clearance.
• Bachelor of Science degree with 5 years of professional experience in cybersecurity design and development activities
• Strong oral and written communication skills

Desired qualifications:

• SCI clearance eligibility
• Experience in NASA Security or served as an ISSO in other agencies.
• Experience in NASA Risk Information Security Compliance System and Assessment and Authorization.
• Experience with Cloud Services and classified networks.
• Certification level to meet DoD 8140 IAT or DoD 8570 IAT Level II certification or higher.

Compensation Details:

$175K-$200K

The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O’Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

08/19/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters (https://postings.govdocs.com/#/vxSkbztPuAwwxfs) .