Demo

Junior Systems Administrator

Lensa
Mc Lean, VA Full Time
POSTED ON 12/24/2025
AVAILABLE BEFORE 1/22/2026
Lensa is a career site that helps job seekers find great jobs in the US. We are not a staffing firm or agency. Lensa does not hire directly for these jobs, but promotes jobs on LinkedIn on behalf of its direct clients, recruitment ad agencies, and marketing partners. Lensa partners with DirectEmployers to promote this job for Amentum. Clicking "Apply Now" or "Read more" on Lensa redirects you to the job board/employer site. Any information collected there is subject to their terms and privacy notice.

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

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 (https://postings.govdocs.com/#/vxSkbztPuAwwxfs) .

If you have questions about this posting, please contact support@lensa.com

Salary.com Estimation for Junior Systems Administrator in Mc Lean, VA
$98,854 to $124,169
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