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Amentum

Systems Administrator III

Washington, DC, United States

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Job details

Posting language: English
Posted: Nov 12, 2026

Original job description

At Amentum, we recognize that strong, secure, and reliable IT infrastructure is the foundation of every successful organization. We’re offering a career opportunity for a System Administrator who is passionate about optimizing systems, driving operational efficiency, and safeguarding digital environments. This role is critical to our mission ensuring our teams have the tools and support they need to perform at their best. We’re looking for someone who brings not only technical expertise but also a proactive mindset, a commitment to continuous improvement, and a desire to grow with a purpose-driven company. If you're ready to make a meaningful impact through technology, we invite you to join us and help shape the future of our IT landscape.

If you’re ready to start your career with purpose - using your skills to support the people and technologies that protect our nation - Amentum is where your impact begins.

Work Schedule:

8 hours 5 days a week within the hours of 6:00am – 6:00pm

Essential Responsibilities: As an IT Specialist Mid at Amentum, you will provide technical expertise, support, and oversight in one or more emerging technology areas including, but not limited to, internet technologies, secure messaging, enterprise engineering, information assurance, public key infrastructure (PKI), and critical infrastructure protection.

Review and recommend solutions to customer problems based on prior experience and hands on understanding of how products and services interrelate and support the customer mission.
Provide expert level Security Engineering support services focused on the implementation and execution of DoD security policies, procedures and other information systems security requirements.
Provide support for current and new initiatives related to implementing Information Assurance (IA) related products and services.
Provide support for integrating existing IA products with new hardware and software introduced to the network.
Updates manage and track implementation of information security requirements for the IT assets and resources and ensure they are properly protected against current and evolving attacks and/or compromise vectors.
Provide security support at a technical level, in remediating vulnerability findings during vulnerability assessments of systems, networks, and assist with the development of Plan of Actionable and Milestones (POAMs) for remediation.

Your day-to-day responsibilities will include:

Review and Update Information Security Requirements:
Review the current information security policies and procedures.
Update security requirements for IT assets and resources to ensure they are protected against current and evolving threats.
Document any changes and ensure compliance with DoD security policies.
Vulnerability Assessment and Remediation:
Conduct vulnerability assessments on systems and networks.
Identify and document any vulnerabilities found.
Develop and implement POAMs (Plan of Actionable and Milestones) for remediation of identified vulnerabilities.
Technical Support and Troubleshooting:
Provide technical expertise and support to resolve customer problems.
Utilize prior experience and understanding of how products and services interrelate to recommend effective solutions.
Afternoon Tasks:
Implementation of Information Assurance (IA) Products:
Support the implementation of IA-related products and services for both current and new initiatives.
Ensure that existing IA products are integrated with new hardware and software introduced to the network.
Document all activities, findings, and recommendations from the day’s work.
Prepare reports for management and stakeholders on the status of security initiatives, vulnerability assessments, and remediation efforts.
Continuous Learning and Development:
Stay updated with the latest trends, technologies, and best practices in information security and emerging technologies.
Participate in training programs or webinars to enhance your skills and knowledge.
Collaboration and Coordination:
Work closely with other IT professionals, stakeholders, and management to ensure alignment with organizational goals.
Participate in team meetings and discussions to share insights and seek input on complex issues.
Ensure that all IT assets and resources are compliant with relevant security standards and regulations.
Prepare for and assist with security audits and assessments.
By following this daily task list, the IT Specialist III Mid can effectively manage their responsibilities, ensure the security and integrity of IT assets, and provide valuable support to the organization.

This role calls for someone who thrives under pressure, is technically exceptional, and can see both the big picture and the fine details. Your ability to multitask, stay organized, and lead through complexity will be critical to your success.

Minimum Education: Bachelor’s degree in computer science, Information Systems, Engineering, Business, or other related discipline with ten (10) years of which at least seven (7) years specialized experience.

Minimum Years of Experience: Related discipline with five (5) years

Required Certifications: 8570 CompTIA Security +

Preferred:

Familiarity with government or DOD operations.

Security Clearance Required: TS SCI with Poly

Minimum Education: Bachelor’s degree in computer science, Information Systems, Engineering, Business,

Minimum Years of Experience: Related discipline with nine (9) years of which at least seven (7) years specialized experience.

Required Certifications: IAM1 8570 Compliance (Security +)

Preferred Qualifications: Prior experience supporting DOD or other federal government agencies.

·Certifications such as:

Security+ Certification

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.

#javelin

Compensation Details:

$185k - $190k 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:

11/12/2026 - Until FilledAmentum 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.

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More about this job

Skills

Provide technical expertise
Security regulations
Cybersecurity
Regulatory compliance
Technical support
Troubleshooting
Collaboration
Multitask
Computer science
Security+
Emergency response
Customer service
Quality assurance procedures

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Work requirements

Jobs in the United States