Senior Information Systems Security Officer TS​/SCI w​/Poly

Purpose and Impact

Amentum is seeking a self‑starting, motivated individual to serve as the Information System Security Officer supporting Computer Network Operations. The candidate will maintain compliance and strengthen the security posture of critical mission systems through the Risk Management Framework and will be responsible for six System Security Plans (SSPs).

• Ensure an appropriate operational security posture for information systems.
• Support continuous monitoring of networks to detect and correct areas of security non‑compliance, unmitigated vulnerabilities, and other risks.
• Follow consistent security processes and participate in the continuous monitoring program.
• Perform regular audits of information systems.
• Assist the information systems security manager in preparing the system for periodic reaccreditation.

• Experience as an ISSO with emphasis on Defense‑in‑Depth principles, network, and enterprise security architecture.
• Experience applying the principles of NIST SP 800‑53 and the procedures in the Risk Management Framework (RMF).
• Familiarity with STE/STN requirements and associated tools and tradecraft.

• TS/SCI Poly.

• ​Bachelor’s degree plus eight years of relevant experience.
• ​Master’s degree plus six years of relevant experience.
• ​Associate’s degree or 18 semester hours of military coursework/training in a computer‑related field plus ten years of relevant experience.
• ​High school diploma/GED plus twelve years of relevant experience (considered).

• Information Assurance Manager (IAM) Tier 1 certification.

• Excellent written and oral communication skills.

$140,000–$180,000 (actual compensation may vary based on responsibilities, experience, skills, etc.)

• 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

We are an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy, age, ancestry, U.S. 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.