Senior Linux System Administrator IRES - SSFB

Position Title: Senior Linux System Administrator

Location: Schriever Space Force Base, Colorado Springs, CO

Relocation Assistance: None available at this time

Remote/Telework: NO

Clearance Type: DoW Secret

Shift: Day shift

Travel Required: Up to 10% of the time

Description of Duties:

The Senior Linux System Administrator supports the Missile Defense Agency (MDA) on the Integrated Research and Development for Enterprise Solutions (IRES) contract. The candidate will:

• Build, configure, deploy, administer, maintain and troubleshoot virtual and physical servers/systems
• Ensure system changes are completed in accordance with developer documentation, configuration management and documentation practices
• Install, configure, and manage RHEL and other Linux-based systems
• Perform necessary physical inspections and research using system/event logs and appropriate tools/software to identify problems, trends and aid in troubleshooting actions
• Advise leadership and make appropriate technical recommendations regarding system operation issues and improvements, optimization tools and methods, and process development
• Assist integration managers in problem definition and root cause analysis as needed
• Provide timely updates to appropriate team leads, managers and stakeholders on status of tasks and troubleshooting efforts
• Make recommendations to plan, develop and execute work actions that achieve critical-path requirements
• Identify documentation errors and provide recommendations to appropriate personnel for correction
• Use REMEDY ticketing system to report, track and document problem and resolution life-cycle actions on faulty systems
• Perform evening shift work and weekend duty as needed to meet off-hour mission activities

Resumes, in month and year format, must be submitted with application in order to be considered for the position. The selected candidate may be assigned as an employee for one of our teammate companies.

Basic Requirements:

• Must have 08, or more, years of general (full-time) work experience
  • May be reduced with completion of advanced education
• Must have 06, or more, years of directly related experience in IT systems, installing and configuring operating systems and virtual machines, and troubleshooting
• Must have 1, or more, years of experience working in a management or leadership role
• Must have experience with Multi Factor Authentication methodology
• Must have experience building, configuring and deploying servers/systems in a virtualized environment
• Must have administration experience on RHEL 8/9 using Command Line Interface
• Must be able to interface with software engineers, system engineers, and subject matter experts to solve complex integration and technical problems
• Must have a current DoW approved 8570 Level II certification such as Security+ CE
• Must have an active DoW Secret Security Clearance

Desired Requirements:

• Have experience working with Ansible automation
• Have experience configuring and managing NetApp storage devices
• Have experience with security patching and software management using RHEL Satellite
• Have network troubleshooting experience
• Have knowledge of Missile Defense, DoD communications systems and MDIOC operations
• Have Project Management experience
• Have a Degree in an IT or Engineering related discipline

This position will be posted for a minimum of 3 days. If a candidate has not been selected at that time, it will continue to be posted until a suitable candidate is selected or the position is closed.

Compensation Details:
$125,000 - $140,000

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:
05/29/2026 - 06/08/2026
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 .