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Senior Systems Administrator Security Clearance

Job in Fort Belvoir, Fairfax County, Virginia, 22060, USA
Listing for: TekSynap
Full Time position
Listed on 2026-01-24
Job specializations:
  • IT/Tech
    Cybersecurity, IT Support, Systems Administrator, Network Security
Job Description & How to Apply Below
Position: Senior Systems Administrator with Security Clearance
Responsibilities & Qualifications RESPONSIBILITIES
Installation, configuration, maintenance, and administration of Active Directory. Be comfortable updating and troubleshooting a range of enterprise situations that involve things like Group Policy Object management, authentication, and VDI.
Familiar with VDI platforms, preferably Horizon View.
VMWare familiarity – demonstrated the ability to use vCenter to deploy, clone, update templates, etc.
ACAS management. Has worked on administration of an ACAS deployment.
RHEL / Linux Experience.
Very familiar with DoD and local SSO security requirements, including STIG, Virus Scan, compliance scanning, Tanium, and local security policies, while maintaining system efficiency, maintainability, and supportability.
Install and configure new software as required and install software patches as they become available.
Troubleshoot, debug, and resolve software, system, network, and security related issues.
Ability to work with software vendor technical support to overcome issues, including software, configuration, and compatibility issues with DoD compliant security environment.
Write and modify scripts in Power Shell, C#, C++, HTML, XML, JSON, and JavaScript to automate administrative processes and labor tasks, modify installed software, and provide system control and monitoring.
Develop and maintain required system documentation (as-builts, SOPs, work instructions, TTPs etc). REQUIRED QUALIFICATIONS
Active DoD Top-Secret Clearance with SCI eligibility
8570 IAT II level certification, i.e. Security + CE
Bachelor of Arts (BA)/Bachelor of Science (BS) degree or equivalent work experience. Years of work experience may be substituted one for one with college years.
10+ years of relevant experience
US Citizen
Experience administering applications in VMware environment

Experience with Windows Server OS and troubleshooting

Experience with ArcGIS/ESRI automation and deployments
Proactive self-starter demonstrating a positive, willing attitude and excellent oral and written communication skills.
Organizational

Skills:

Can plan and prioritize work. Follows tasks to their logical conclusion and makes sure that everything has been done to the right standard. Good attention to detail.
Communications:
Ability to communicate clearly and efficiently to team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context.
Position Requirements
10+ Years work experience
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