Sr. Systems Administrator

Are you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a Senior System Administrator to join our team of passionate individuals in Springfield, VA . In this role you will support challenging, mission-critical projects that make a direct impact on the Nation's security and intelligence mission.

The Geospatial Enterprise Open Data Store (GEODS) contract provides integration, design, development, and sustainment for data services in support of the Federal Government.

The Senior System Administrator is responsible for overseeing the testing of products from development to operational deployment, working with Scrum Masters and developers through the requirements process and contributing to a robust, organized Backlog and streamlined Roadmap for the GEODS program.

Work Schedule: (shift hours and days of the week)

Within the window of 5:00AM - 9:00 PM EST

Essential Responsibilities: ( describe the day-to-day )

• Access Management & Security:

• Fulfill AWS S3 bucket access requests from data custodians, ensuring proper authorization and data security.

• Create and manage IAM roles and policies to enforce strict access control principles and maintain a secure cloud environment.

• Create, rotate, and manage IAM user secret & access keys in accordance with the company's 90-day key rotation policy.

• Monitoring & Troubleshooting:

• Proactively monitor the health and performance of our systems and websites using tools like CloudWatch, Kibana/Elasticsearch, and Tableau, ensuring optimal functionality and identifying potential issues.

• Troubleshoot and resolve system issues by analyzing logs on EC2 Linux instances within AWS.

• Assist in troubleshooting network, DNS, and storage issues, and make recommendations for cost-saving options and growth.

• Operational Support & Collaboration:

• Work on tickets in a timely manner, adhering to Service Level Agreements (SLAs) and providing efficient support to internal stakeholders.

• Assist DevOps and development teams during deployments, ensuring smooth and successful releases.

• Create SNS topics and configure S3 bucket notifications based on customer requests, enabling timely alerts and automated workflows.

• Work closely with various teams across the organization, including security, development, and operations, to address AWS infrastructure requests and ensure alignment with best practices.

• Document processes and contribute to the creation and maintenance of Standard Operating Procedures (SOPs) to improve team efficiency and knowledge sharing.

• Independence & Reliability:

• Execute tasks with minimal technical supervision, embrace reliability constraints, and proactively contribute improvements to the platform.

• Demonstrate commitment to teamwork, contributing to the betterment of the team and fostering a collaborative environment.

• On-Site Availability:

• Maintain on-site availability Monday through Friday, adhering to the required work schedule.

• Proficiency with Tools:

• Demonstrated experience using collaboration tools such as ServiceNow, Jira, and Confluence for incident management, project tracking, and knowledge sharing.

Clearance Required: TS/SCI

Minimum Education: Bachelor's degree plus 5 years of experience,

Associates degree plus 7 years of experience or a minimum of 8 years of experience, in a related field

Minimum Years of Experience: Bachelor's degree plus 5 years of experience; Associate degree plus 7 years of experience, or a minimum of 8 years of experience, in a related field

Compensation Details:

$155,000 - $180,000

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.

#javelin

Compensation Details:

US: $150,000 - $180,000

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:

02/13/2026 - 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 ( .