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Senior System Administrator - TS​/SCI w​/Polygraph

Job in Reston, Fairfax County, Virginia, 22090, USA
Listing for: Dormont Manufacturing Co
Full Time position
Listed on 2026-07-23
Job specializations:
  • IT/Tech
    Systems Administrator
Salary/Wage Range or Industry Benchmark: 142792 - 184000 USD Yearly USD 142792.00 184000.00 YEAR
Job Description & How to Apply Below

Job Title

Senior Systems Administrator

Overview

Transform technology into opportunity as a Senior Systems Administrator with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate.

Job 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 Systems 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 10 years of relevant experience.
  • Security + Certified;
    Must presently be 8570 compliant (IAT Level 2 preferred)
  • Bachelor of Arts/Bachelor of Science in a field applicable to this work
  • US Citizenship Required
  • TS/SCI with CI Poly
Desired Qualifications
  • Linux OS (CentOS, RHEL) administration.
  • Satellite server administration.
  • Ansible playbook writing.
  • Implementing STIGs.
  • Experience supporting a software configuration management and development environment
Benefits
  • 401K with company match
  • Comprehensive health and wellness packages
  • Internal mobility team dedicated to helping you own your career
  • Professional growth opportunities including paid education and certifications
  • Cutting-edge technology you can learn from
  • Rest and recharge with paid vacation and holidays
Total Rewards

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave.

To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees are most valuable about.

Salary

Range

The likely salary range for this position is $142,792 - $184,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Schedule

Weekly

Hours:

40

Travel Required:

None

Telecommuting Options:
Onsite

Location

USA VA Reston

Security Clearance Requirements

Must Currently Possess:
Top Secret/SCI

Must Be Able to Obtain:
Top Secret SCI + Polygraph

Public Trust / Other Required

None

Citizenship

US Citizenship

Required:

Yes

Job Family

IT Infrastructure and Operations

Type of

Requisition

Regular

EEO Statement

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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Position Requirements
10+ Years work experience
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