Mission Assurance System Administrator - NISSC 3 - DC

Amentum; Washington (District of Columbia); On-site; USD 150,000 - 160,000; Full time

Benefits offered by this job

Health insurance

Paid time off

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum is seeking a Mission Assurance System Administrator to support NORAD ITW/AA and NISSC 3 at the Pentagon, Washington DC. The role focuses on maintaining and securing critical system infrastructure, troubleshooting complex hardware/software issues, and coordinating with engineers and maintenance teams on-site.

The ideal candidate will have TS/SCI eligibility, DoD IAT Level II+ security, extensive Linux/Windows administration experience, VMware, AD and network knowledge, and a track record

Qualifications

• Active TS with SCI eligibility.
• Current DoD IAT Level II or higher (Sec+).
• 10+ years general work experience.
• 8+ years directly related experience.
• 2–4 years Mission Assurance Center experience.
• Linux administration, Windows OS, VMware, LAN/WAN knowledge.
• Active Directory/domain knowledge.
• Understanding of virtual machines and Remote Desktop.
• Windows system administration experience.

Responsibilities

• Analyze, troubleshoot, and resolve system hardware, software, peripheral, and networking problems.
• Explain technical concepts to inexperienced users.
• Optimize, fine‑tune, and monitor operating system software and hardware.
• Install and configure software and hardware.
• Identify and corrects processing anomalies.
• Create incident reports and perform data collection.
• Provide server, workstation, and application expertise to users.
• Support to other work centers and test community.
• Escort and support engineers and maintenance personnel.
• Coordinate higher level support with Mission Assurance Centers.

Skills

TS/SCI clearance

System administration

Troubleshooting

Incident reporting

Technical support

Education

AS degree in computer field

Tools

Red Hat Enterprise Linux

Windows OS administration

VMware

Active Directory

Remote Desktop

Job description

Position Title: Mission Assurance System Administrator

Location: Pentagon, Washington DC

Relocation Assistance: None available at this time

Remote/Telework: NO - Not available for this position

Clearance Type: Top Secret with SCI Eligibility

Shift: Shift work may be required

Travel Required: Up to 10% of the time

The NORAD Operations Division, as the prime contractor on the North American Aerospace Defense Command (NORAD) Cheyenne Mountain Complex (NCMC) Integrated Tactical Warning/Attack Assessment (ITW/AA) and Space Support Contract 3 (NISSC 3), provides:

• Operations, maintenance, and Sustainment of ITW/AA threat warning and control systems.
• Software development and integration.
• Supports the classified communications and processing for Command and Control (C2) capability and legacy space C2 systems located at:
  • Cheyenne Mountain Space Force Station (CMSFS), Colorado
  • Peterson Space Force Base (PSFB), Colorado
  • Offutt Air Force Base, Nebraska
  • Vandenberg Space Force Base, California
  • Numerous sensor and forward operator sites around the world

Description of Duties:

The Mission Assurance System Administrator supports North American Aerospace Defense Command (NORAD) Cheyenne Mountain Complex (NCMC) Integrated Tactical Warning/Attack Assessment (ITW/AA) and Space Support Contract 3(NISSC 3). The candidate will:

• Analyze, troubleshoot, and resolve system hardware, software, peripheral, and networking problems in stressful situations
• Explain technical concepts to inexperienced users
• Optimize, fine‑tune, and monitor operating system software and hardware
• Install and configure software and hardware
• Identifies and corrects processing anomalies
• Create Incident Reports on system issues and perform system data collection
• Perform and provide server, workstation, and application expertise to government, civilian and contractor users
• Provide support to other work centers and test community
• Escort and provide support to engineers and maintenance personnel
• Coordinate higher level support with Mission Assurance Centers

It is important to be available to work any shift/designated hours required including nights, weekends, and holidays. Personnel may be required to remain on-site for extended periods during emergencies and drills.

This position is expected to pay $150,000-$160,000 annually; depending on experience, education, and any certifications that are directly related to the position.

This position will be filled and work onsite at Pentagon, Washington DC

The selected candidate may be assigned as one of our teammate companies.

Basic Requirements:

• Active TS with SCI eligibility
• Current DoD IAT Level II or higher (Sec+)
• 10 years or more of general work experience
• 8 years or more of directly related experience
• At least 2-4 years Mission Assurance Center experience
• Working knowledge and system administration experience with Red Hat Enterprise Linux environments; Microsoft Windows operating systems (OS) administration and associated hardware; VMWare and system visualization; and Local Area Network (LAN) and Wide Area Network (WAN) technologies
• Knowledge of Active Directory and domains
• Understanding of virtual machine and Remote Desktop
• Windows System Administration experience

Desired Requirements:

• Have experience using command line interface such as Windows, Linux, or Cisco
• AS degree in a computer field
• VCP/VCAP
• Cyber experience
• Basic understanding of network topologies and protocols
• Trouble ticket experience

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:

$150,000-$160,000

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:

11/03/2026 - 11/06/2026

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.