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Salary
$108k – $135k per year
Location
In office (London)
Seniority
Senior · 5+ years exp
Visa
H-1B filings in 12 months: 21 · for this role: 13 · green card filings: 4
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 1, 2026. First seen by Alion on Oct 28, 2026. General Dynamics Information Technology scores A on the Alion truth index.

Overview
Company
Impact
Profile match
General Dynamics Information Technology, known as GDIT, is the technology services division of the defence contractor General Dynamics and one of the largest suppliers of IT to the United States federal government. It designs, builds and operates networks, cloud environments, cybersecurity and mission applications for defence, intelligence, homeland security and civilian agencies, work that requires a very large security-cleared workforce. The division roughly doubled in scale through the 2018 acquisition of CSRA, and has since concentrated on cloud migration, zero trust architecture and applying artificial intelligence inside accredited government environments.

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Top Secret/SCI

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

IT Infrastructure and Operations

Job Qualifications:

Skills:

Storage Management, Unix System Administration, Windows System Administration

Certifications:

None

Experience:

5 + years of related experience

US Citizenship Required:

Yes

Job Description:

Transform technology into opportunity as a 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.

At GDIT, people are our differentiator. As a Systems Administrator you will help ensure today is safe and tomorrow is smarter. Our work depends on TS/SCI cleared Systems Administrator joining our team to Support our intelligence customer in London, UK.

HOW A SYSTEMS ADMINISTRATOR WILL MAKE AN IMPACT

As a Regional Systems Administrator, you will work closely with both on-site and remote

users to coordinate site visits and upgrades, provide on-site and remote resolution support

for trouble calls and provide TIER 2/3 support of Unix/Windows workstations and servers, including Web servers, network attached storage devices, and stored data in support of business processing requirements.

Job Duties:

  • Systems administration of desktop and server systems connected to local and wide area networks. Desktop system management responsibilities involving account monitoring, security, Operating System (OS) installation, and other local area system administration related functions.
  • Provide support for implementation, troubleshooting and maintenance of IT systems and management of system infrastructure and any processes related to these systems
  • Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc.
  • Provide Tier 2 and Tier 3 problem identification, diagnosis and resolution
  • Provide support for the escalation and communication of status to agency management and internal customers
  • Install/load operating system and application software
  • Isolate and resolve hardware and software problems involving the applications, the operating system, the hardware, the communications infrastructure, or any combination thereof
  • Troubleshoot, maintain integrity and configure network components along with implementing operating systems enhancements to improve reliability and performance
  • Perform software installations and upgrades to Unix/Windows operating systems and layered software packages and maintains them in accordance with established policies, procedures and service level agreements; evaluation and installation of software/hardware patches and resolution of software related problems associated with COTS/GOTS products
  • Create and follow procedures to maintain and manage multiple linked databases including security, data safety and integrity, disaster recovery, and bulk data import/exports.
  • Conduct routine and emergency maintenance of assigned data center equipment
  • Communicate/coordinate scheduled preventive maintenance windows with potentially impacted customers
  • Collaborate and contribute to the development, administration, and testing of backup and recovery plans
  • Ensure systems are secure to STIG guidelines by utilizing tools such as Retina and HBSS
  • Maintain operational, configuration, and other standard operating procedures (SOPs).
  • Verify system availability with existing Enterprise tools

Requirements:

  • Bachelor's Degree and 5+ years of relevant experience or an equivalent combination of education and years of experience.
  • Must have Security+ certification or DoW 8570 Level II equivalent within 90 days of hire
  • TS/SCI Clearance required and eligibility to obtain CI Poly
  • UNIX, Windows, and/or Storage administration
  • Experience working with trouble reporting and tracking systems such as Security+
  • Ability to respond to after hour calls “provide on-call support"
  • Ability to travel 0-20% to local area sites as well as other locations with similar architecture/footprint.
  • Ability to prioritize and execute tasks in a high-pressure environment. Physical Requirements: The employee will need to be able to lift/move/carry equipment as necessary (max 40 pounds)

Desired Skills:

  • Experience in the imagery intelligence domain a plus
  • Ability to create and modify scripts in multiple disciplines on Windows, Linux, and Solaris systems
  • Knowledge of the Customer's processes and procedures and of the Customer's production systems a plus
  • Ability to prioritize and execute tasks in a high-pressure environment.
  • Ability to function as a team member and independently
  • Prefer skills in one or more of the following: Window Server, Red Hat, IRIX, Solaris, Sybase, Informix, SQL, and Imagery Production Chain
  • General knowledge of database administration, network administration and possess network configuration management skills.
  • Must have a valid US passport

Location: Customer Site

US Citizenship Required

GDIT IS YOUR PLACE:

  • 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

The likely salary range for this position is $107,744 - $134,550. 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.Total compensation for international positions varies by tax, social security, and immigration statuses, as well as location. Generally, an international assignment may include allowances, premium uplifts, and/or relocation or transportation benefits, above base salary range noted.

Scheduled Weekly Hours:

40

Travel Required:

10-25%

Telecommuting Options:

Onsite

Work Location:

International

Additional Work Locations:

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 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.

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events at

gdit.com/tc.

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