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Tier 3 System Engineer, TS/SCI with Polygraph
Tier 3 System Engineer, TS/SCI with Polygraph-February 2024
Aurora
Feb 17, 2026
About Tier 3 System Engineer, TS/SCI with Polygraph

  Req ID: RQ165283

  Type of Requisition: Regular

  Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph

  Job Family: Systems Administration

  Skills:

  Linux,Microsoft Administration,Microsoft Windows

  Experience:

  5 + years of related experience

  US Citizenship Required:

  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) environments.

  Job Responsibilities & Duties:

  System Administrative Advisory duties to include management of Windows and Linux workstations on EVDI and physical

  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.

  8+ 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 ServiceNow, 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

  PowerShell

  Virtualization Environments (VMware, Citrix)

  Profile management utilizing the VMware User Experience Management (UEM) toolset

  Microsoft Exchange

  Telephone/Video support

  Networking

  Familiarity with site specific customer and mission

  The likely salary range for this position is $108,476 - $162,714. 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.

  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 have told us they value most.

  We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 30 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

  We connect people with the most impactful client missions, creating an unparalleled work experience that allows them to see their impact every day. We create opportunities for our people to lead and learn simultaneously. From securing our nation’s most sensitive systems, to enabling digital transformation and cloud adoption, our people are the ones who make change real.

  GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.

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