Purpose and Impact:

As an Information System Security Officer (ISSO) at Amentum, you will play a vital role in safeguarding national security by protecting the integrity, confidentiality, and availability of government-affiliated information systems. Your expertise will directly support critical defense and intelligence missions, ensuring that cybersecurity risks are identified, mitigated, and continuously monitored in alignment with stringent DoD and DIA standards.

By serving as the primary security advisor for assigned systems, your work will not only ensure operational compliance but will also contribute to the resilience and trustworthiness of mission-critical infrastructure relied upon by U.S. government agencies. Through close collaboration with engineers, system administrators, government clients, and security assessors, you will help design and maintain secure environments where innovation and mission success are achieved without compromising cybersecurity.

Your contributions will have a lasting impact, enabling rapid threat response, reduced risk exposure, and the sustained protection of sensitive data and digital assets vital to national defense and intelligence operations.

Work Schedule: 5 days a week, 8 hours a day.

Essential Responsibilities:

• Serve as the primary security advisor for assigned classified and unclassified information systems, ensuring alignment with DoD, DIA, and NIST guidelines.
• Ensure systems are configured, operated, and maintained in accordance with DIA Risk Management Framework (RMF) and DoD cybersecurity policies.
• Develop, implement, and continuously monitor system security plans (SSPs), POA&Ms, risk assessments, and related documentation.
• Lead or support system authorization and accreditation (A&A) activities, including system testing, security control validation, and interfacing with government Authorizing Officials (AOs).
• Maintain continuous monitoring and oversight of security controls, including regular auditing, vulnerability scanning, and compliance tracking.
• Perform daily audit log reviews, analyze security alerts, and verify system security settings.
• Track and report system vulnerabilities and status of remediation efforts.
• Coordinate with system owners, administrators, and program managers to ensure security compliance milestones are met.
• Maintain and update cybersecurity documentation to reflect current system architecture and security posture.
• Participate in technical meetings, design reviews, and risk analysis sessions for new or modified system components.
• Provide weekly security status reports to internal management and external stakeholders as required by the contract.
• Stay current with evolving DoD cybersecurity policies and threat intelligence relevant to classified systems.

Other Responsibilities:

Safety - Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.

Quality - Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.

Procedure Compliance - Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job.

Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.

As part of our commitment to maintaining a safe and compliant work environment, Amentum is a drug-free workplace and requires all personnel to comply with company drug and alcohol policies as a condition of employment.  Employment is contingent upon successful completion of the drug screening process.  Please note that this may include pre-hire screening for marijuana, as well as other federally controlled substances due to Amentum’s role as a federal contractor and trusted partner to the US Government.  

Minimum Requirements (Knowledge, Skills, and Abilities):

• 3–5 years of experience in information system security or cybersecurity roles.

Clearance Required:

• TS/SCI with Poly

Minimum Education:

• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or related field.
   

Minimum Years of Experience:

• 3-5yrs

Required Certifications:

• DoD 8570.01-M IAT Level II or IAM Level I compliant certification, such as:
• Security+ CE (Required)
• CISSP, CISM, or GSLC (Preferred for higher-level roles)

Preferred Qualifications:

• Experience supporting DIA or Intelligence Community customers
• Familiarity with eMASS, Xacta, or similar compliance management platforms
• Experience with classified system environments (e.g., SIPR, JWICS)
• Working knowledge of Linux and Windows secure system configuration
• Experience interacting with Government Authorizing Officials (AOs) and Security Control Assessors (SCAs).

#javelin

Compensation Details:

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:

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.