Tier 3 System Administrator – TS/SCI Polygraph
Listed on 2026-09-30
-
IT/Tech
Systems Administrator, IT Support
Type of
Requisition :
Regular
Clearance Level Must Currently Possess:Top Secret SCI + Polygraph
Clearance Level Must Be Able to Obtain:Top Secret SCI + Polygraph
Public Trust/OtherRequired:
None
Job Family:IT Infrastructure and Operations
Job Qualifications:Skills:
Linux, Microsoft Windows, System Administration
Certifications:None
Experience:5 + years of related experience
US CitizenshipRequired:
Yes
Job Description:General Dynamics Information Technology (GDIT) is seeking a Linux/Microsoft Systems Administrator to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a competitive salary and generous health and personal benefits, the Systems Administrator will enhance their skill set among a talented and technically accomplished group of colleagues.
Primary responsibilities include providing Tier II support of maintaining multiple large Enterprise environment. The supporting infrastructure includes multiple Microsoft based networks spanning multiple security enclaves within a hybrid (Windows & RHEL) environment.
Job Responsibilities & Duties:- Troubleshooting application functionality, crash and performance
- Investigate user performance and work with external teams to improve user experience.
- Assist customers with Tier 2 incident resolution for Linux and windows applications.
- Provide remote end user desktop support.
- Identifies, analyzes, and resolves system incidents with both short-term workarounds and long-term solutions. Responds to escalated service desk/team requests.
- Communicate effectively (in oral and written form) with a variety of individuals; work well within small and large team environments.
- Willingness to provide initial triage, response, and notifications for incidents.
- Participates in special projects as required.
- Bachelor’s Degree in Computer Science, Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.
- 5+ years of related systems administration experience
- TS/SCI with Polygraph is required.
- Candidate must possess an appropriate and current DoD Information Assurance (IA) Certification to be considered for employment; either valid CompTIA Security+ CE, Systems Security Certified Practitioner (SSCP) or Cisco Certified Network Associate (CCNA)-Security. CompTIA Security+ CE Certification is the preferred certification. In addition, candidate must attain the required DoD 8570 Computing Environment (CE) Training within six (6) months of Hire Date.
Successful candidates are expected to have related experience and knowledge/understanding of:
- Active Directory Administration
- DNS, DHCP, DFS, LDAP
- Windows 10, Server 2012, Server 2016,
- Application Troubleshooting such as Outlook, Excel, Word, JAVA, Internet Explorer
- Linux Operating system
- Understanding of Service Now, NETS or other ticketing process
- ITIL v3 or higher
The following knowledge/skill set is not required but is a plus:
- Microsoft System Center Configuration Manager
- Power Shell
- Virtualization Environments (VMware, Citrix)
- Profile management utilizing the VMware User Experience Management (UEM) toolset
GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
- Growth: AI-powered career tool that identifies career steps and learning opportunities
- Support: An internal mobility team focused on helping you achieve your career goals
- Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
- Community: Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.
The likely salary range for this position is $110,500 - $149,500. 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.
Scheduled WeeklyHours:
40
Travel Required:None
Telecommuting Options:Onsite
Work Location:USA CO Aurora
Total Rewards at GDIT: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…
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