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Sr. System Administrator

Job in Reston, Fairfax County, Virginia, 22090, USA
Listing for: Arena Technical Resources, LLC (ATR)
Full Time position
Listed on 2025-12-07
Job specializations:
  • IT/Tech
    Systems Administrator, IT Support
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below

Overview

Job Title:

Sr. System Administrator

Location:

Reston, VA – Onsite, SCIF Environment
Eligibility: TS/SCI with CI Polygraph

Responsibilities
  • Plans, designs, and implements infrastructure changes and system upgrades.
  • Manages and troubleshoots multiple VMware environments.
  • Provides Windows Server and Linux administration, maintenance, and troubleshooting.
  • Creates STIG compliant images for Windows Desktop, Windows Server, and Linux OS.
  • Creates, tests, and deploys software packages using software deployment products such as SCCM, PDQ, etc.
  • Provides expert level support and mentoring for Mid and Junior System Administrator personnel.
  • Develops and maintains installation and configuration procedures for system and software changes.
  • Utilizes scripting to automate common tasks.
  • Performs hardware maintenance/repair activities.
  • Ensures proper planning and execution of major projects/maintenance activities.
  • Provides advanced level administration and troubleshooting of Active Directory, GPO, DNS, DHCP, and Domain Controllers.
Required Qualifications
  • Ability to write scripts using Power Shell and/or Bash.
  • Experience managing VMware, Nutanix, and other types of enterprise level Virtual Infrastructures.
  • Proficient in managing and troubleshooting Active Directory and Group Policy Object (GPO).
  • At least 8 years of relevant experience.
  • Must presently be 8570 compliant (IAT Level 2 preferred); must be 8570 compliant (IAT Level
    2) by date of security indoctrination with any necessary continuing education (CE) for certification.
Desired Qualifications
  • Linux OS (CentOS, RHEL) administration.
  • Satellite server administration.
  • Ansible playbook writing.
  • Implementing STIGs.
  • Experience supporting a software configuration management and development environment.
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