ManTech logo

System Administrator

ManTech

Quantico, VAJobSeen todaySeen in employer's feed today

Most applications go out cold — see where you stand first. No sign-up to start.

You apply on the employer's site, with no Olive account needed.

Watch jobs like this.

Don't just apply. Show up ready.

Olive works from this exact posting.

At a glance

Compensation
No compensation found
Location
Quantico, VA
Work Authorization
Not specified

Olive lists jobs from US employers, including remote roles you can work from the United States.

Requirements

Credentials this posting asks for.

DoD 8570 IAT Level IITS/SCI clearance

Job overview

MANTECH seeks a motivated, customer-oriented Systems Administrator for its USMC IT Service Desk team in Stafford, Virginia. The role supports enterprise systems and networks for more than 600 users, including Windows servers and workstations, virtual machines, accounts, and applications. The administrator also supports accreditation efforts and maintains user and administrator documentation. A current Top Secret/SCI clearance and DoD 8570 IAT Level II qualification are required.

Skills & qualifications

RequiredNice to have

Skills

Active DirectorySystem ConfigurationNetwork ConfigurationNetwork TroubleshootingNetwork SetupDoD ConceptsMarine Corps ConceptsGroup PolicyLinuxNetworkingMS ExchangeMS LyncSCCMService ManagerMS Hyper-VMS SQL ServerNetworked PrintersDistributed File ServicesData Protection ManagerSMBJavaScriptSharePointPowerShell ScriptingDoD STIG ImplementationPOAM Writing

Qualifications

3+ Years Related ExperienceDoD 8570 IAT Level IITop Secret/SCI Clearance

Full job description

MANTECH seeks a motivated, career and customer-oriented Systems Administrator to join our team USMC IT Service Desk in Stafford, VA.

Responsibilities include but are not limited to:

  • Maintain multiple networks for over 600 users

  • Assist in administering and maintaining Windows servers, Windows Workstations, Virtual Machines, and other critical systems in an enterprise environment

  • Use Microsoft Service Manager, Remedy, ServiceNow, or other ticketing system to create, update, monitor, and close tickets

  • Diagnose and resolve technical hardware and software issues by conducting basic and tier II troubleshooting for servers, workstations, and applications within the Active Directory environment

  • Assist and support with account creations, resetting passwords, troubleshooting system and network problems, installation of hardware and workstations, unlocking accounts, and transferring data

  • Support Accreditation efforts, to include STIGS, POAMs, SAARs, and other critical Processes

  • Update/Create documentation as needed (user guides, admin guides, knowledge base articles, FAQs, quick reference guides)

Minimum Qualifications:

  • At least 3 years of related experience in Service Desk or System Administration roles.

  • Meet DoD 8570 IAT Level II requirements

  • Experience with Active Directory (user account creation, password resetting, PKI setup, group policy, etc.)

  • Experience developing and maintaining system applications/security/network configurations

  • Experience troubleshooting network performances issues

  • Experience with the set-up, configuration, and support of internal and external networks

Preferred Qualifications:

  • Knowledge of standard DoD and Marine Corps concepts, practices, and procedures.

  • Active Directory, Group Policy, Linux OS, Networks, MS Exchange, MS Lync, SCCM, Service Manager, MS Hyper-V, MS SQL Server, Networked Printers/Services, Distributed File Services, Data Protection Manager, SMB, JavaScript, SharePoint

  • PowerShell scripting using any/all the respective plugins related to the applicable technologies

  • Working knowledge of DoD STIGs related to the applicable technologies and how to implement, mitigate, and write POAM statements

Clearance Requirements:

  • A current/active Top Secret/SCI clearance.

Physical Requirements:

  • Must be able to remain in a stationary position 50%.

  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at [email protected] and provide your name and contact information.

How this job compares

Set against the 2,288 open Systems Administrator jobs on Olive Jobs, counted November 5, 2026.

Pay
  • This postingNot listed
  • Virginia median$96–158K/yr191 salary ranges
  • US median$40–48/hr121 hourly ranges
Openings
Olive Jobs lists 261 open Systems Administrator jobs in Virginia and 2,288 across the US. 5% of them nationwide are listed as remote or flexible.
Hiring the most in Virginia
Experience
This posting asks for at least 3 years of experience; Systems Administrator postings that state a minimum ask for 5 years at the median (1,925 postings).
Education
352 of the 2,288 open Systems Administrator jobs (15%) ask for a bachelor's degree or higher.

Counted across the open, public US postings on Olive Jobs on November 5, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.

Prepare for this role

You've read the whole posting — now see how you match it.