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Junior Systems Administrator

Job in McLean, Fairfax County, Virginia, USA
Listing for: Amentum
Full Time position
Listed on 2026-01-03
Job specializations:
  • IT/Tech
    IT Support, Systems Administrator
Job Description & How to Apply Below

Amentum is looking for a Junior Systems Administrator to join our team in McLean, VA
! As a Junior Systems Administrator, you will be responsible for the day-to-day maintenance and support of computer systems and networks.

Must have an Active Top Secret/SCI US Government clearance.

Note:

US Citizenship is required to maintain a Top Secret/SCI clearance.

Responsibilities
  • Installing and configuring software updates, patching operating systems, managing system backups, and performing routine hardware checks.
  • Determines when server, software, and OS upgrades are required and ensures that all upgrades are completed as scheduled, and that appropriate documentation exists prior to implementation
  • Creating, modifying, and deleting user accounts, assigning permissions, and resetting passwords.
  • Identifying and resolving common technical problems with computer systems, network connectivity, and applications.
  • Monitoring system performance metrics like CPU usage, memory utilization, and network traffic to identify potential issues.
  • Maintaining system documentation with details about configurations, troubleshooting steps, and user guides.
  • Providing first-level technical assistance to end-users regarding computer issues.
  • Implementing basic security measures like password policies and virus scans.
  • Actively acquiring knowledge and skills in system administration through training programs and mentorship from senior colleagues.
  • Conduct Hardware inventory, capture serial-number, model number and input captured data in hardware database
  • Maintain software updates, renewals and purchases
Minimum Qualifications
  • Bachelor’s Degree with 4+ years experience and/or ongoing technical training and/or certification programs specific to the work unit’s hardware/software tools
  • Possess Comp TIA A+, Security+, Network+ Certifications
  • Ability to work with diverse team and mentor when needed
  • Respectable understanding of operating systems like Windows, and Linux
  • Understanding Basic Networking fundamentals (IP addressing, DNS, firewalls)
  • Knowledge of common system administration tools
  • Problem-solving and analytical skills
  • Ability to work independently and as part of a team
  • Excellent communication skills to explain technical issues to non-technical users
  • Experience with Windows Server NT/2000/2003/2019 and Active Directory Services
  • Knowledge of building server from start to finish to include (VM) Virtual Machines plus, Nodes and hardware
  • Strong verbal and written communication skills; must be organized and detail oriented
  • Must be able to troubleshoot software and hardware problems, through understanding of industry standards and the ability to work with diverse workforce
  • Must have an Active Top Secret/SCI US Government clearance.

    Note:

    US Citizenship is required to maintain a Top Secret/SCI clearance.
Work Environment
  • Individual will perform most of his/her functions from the Network Administration Office where the network servers are located.
  • Individual will be required to access all network workstations for software and configuration upgrades, troubleshooting, repair, and modifications.
  • Occasionally, individual will also install, replace, or repair Windows 11 workstations
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

12/31/2025 - 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.

Equal Opportunity Employer Statement

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…

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