Cyber Security SME - Information System Security Officer (ISSO)

Amentum is seeking a Cyber Security SME - Information System Security Officer (ISSO) in Eielson AFB, AK in support of a Department of Defense (DoD) customer. In this role, you will be responsible for ensuring the required operational security posture is maintained for various DoD information systems. You will lead the evaluation and implementation of advanced security technologies, including zero trust architectures and cloud security controls. You will play an active role in monitoring systems and their environment of operation to include developing and maintaining Authorization and Authentication (A&A) Packages. Ability to obtain and maintain an active Top Secret with SCI eligibility US Government clearance. Note: US Citizenship is required to maintain a Top-Secret Clearance.

Duties and Responsibilities:

• Maintain awareness of changes to DoD cybersecurity and other applicable policies and update local policies as needed.
• Review system security audit logs on standalone and networked systems.
• Utilize Tenable Nessus scanning tools to identify system vulnerabilities and STIG compliance. Work with IT to remediate all identified vulnerabilities and deficiencies.
• Provide required system security training.
• Perform annual RMF self-inspections for all supported systems.
• Develop and update (as needed) A&A packages and associated artifacts.
• Coordinate any changes or modifications to hardware, software, or firmware of a system with the ISSM/AO/DAO.
• Ensure systems are operated, maintained, and disposed of in accordance with DoD and local security policies and procedures.
• Support Information System Incident Response in accordance with the DoD and local Incident Response Plan.
• Perform duties as Media Custodian.
• Interface and advise system stakeholders on all system security related matters.

Minimum Qualifications :

• Four (4)+ years of experience in cybersecurity, with a proven track record in risk management, threat mitigation, and security strategy development.
• High School Diploma or Equivalent required.
• Must be familiar with the National Institute of Standards and Technology (NIST) publications to include SP 800 37, 800 30, 800 39, 800 137, FIPS 199, 200 and Department of Defense (DoD) security policies.
• Must have and be current in at least one of the following certifications to meet DoD 8570.
• At least 2 years previous experience as an ISSO/ISSM or another organizational equivalent.
• Experience in processing Risk Management Framework (RMF) packages within XACTA.
• Knowledge using Splunk, Tenable Nessus, and ePO.
• Familiarization with installing, configuring, maintaining, and troubleshooting operating system platforms such as Windows 10/11 and Windows Server 2019 to include security configuration knowledge of group and local policies. (Preferred).
• Technical and professional writing expertise; experience with MS Office products.
• Experience in information security that includes configuration of workstations and servers for proper security settings.
• Ability to obtain and maintain an active Top Secret with SCI eligibility US Government clearance. Note: US Citizenship is required to maintain a Top-Secret Clearance.

Preferred Qualifications :

• Bachelor’s degree in a Cybersecurity or IT-related field.
• At least 4 years’ previous experience as an ISSO/ISSM or another organizational equivalent.
• Extensive knowledge of cybersecurity frameworks (e.g., NIST, ISO 27001), compliance regulations, and industry best practices.
• Exceptional communication skills with the ability to convey complex security topics to executive leadership and non-technical stakeholders.
• Experience in leading cybersecurity teams and advising C-level executives on security investments and risk management priorities.
• Advanced knowledge of emerging security technologies, cloud security, and threat intelligence.

Other Requirements:

• This is a non-remote, full-time on-site position
• Must be able to lift up-to 50 pounds on an occasional basis.
• Minimal travel is required (0-10%).

Compensation Details:

$115,000

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:

09/11/2026 - 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.