System Administrator, Sr Principal

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Secret

Clearance Level Must Be Able to Obtain:

Top Secret

Public Trust/Other Required:

None

Job Family:

IT Infrastructure and Operations

Job Qualifications:

Skills:

Critical Systems, Information Technology (IT) Systems, System Administration, Technical Support

Certifications:

None

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

A Sr Principal Systems Administrator is a senior-level IT professional responsible for leading the design, implementation, and ongoing management of the Defense Threat Reduction Agency’s (DTRAs) core systems, infrastructure, and security frameworks. This position requires deep technical expertise, leadership influence, and the ability to drive operational excellence across complex environments.

The Sr. Principal Systems Administrator plays a critical role in managing and optimizing this environment. This senior-level position involves leading system administration efforts, maintaining system performance, and ensuring the security and integrity of data across various platforms. The ideal candidate brings extensive technical expertise and leadership experience to drive projects that enhance efficiency and effectiveness. This job description outlines the key responsibilities, required qualifications, and expectations associated with the role of a Sr. Principal Systems Administrator.

WHAT YOU’LL NEED TO SUCCEED

The ideal candidate will possess deep expertise in Windows environments, infrastructure automation, database management, and data analysis to drive operational efficiency.

• Deep hands-on experience with Active Directory administration, certificate lifecycle management, and enterprise authentication protocols.

• Strong experience administering, configuring, and managing Virtual Machines in VMware or Microsoft Hyper-V hypervisors.

• Solid proficiency in SQL database management, including writing queries and performing general database administration. Experience managing and maintaining File Server Resource Manager (FSRM) and enterprise file systems.

• Demonstrated ability to extract and synthesize data from Active Directory, SQL, and Microsoft Configuration Manager (MCM) databases, SQL, and general CSV manipulation for system forensics and data analysis.

• Remotely manage distributed servers, switches, and workstations within each local site by a central location where possible.

• Plan, coordinate, and implement network security measures through manual configuration, installation of patches, or the application of scripts to protect data, software, and hardware.

• Mitigate vulnerability security findings on workstations and servers and coordinate the resolution between security and local on-site teams.

• Troubleshoot server and workstation failures related to software deployments, and Windows operating system updates.

• Maintain all servers within the configuration baselines and all STIGs and accurately configure and apply patches to all systems.

• Participate in technical exchanges as required.

• Provide technical and operational input to Change Review activities.

• Review existing documentation for the server, services, and maintenance processes and procedures, and provide recommendations for improvements/changes.

• Assist network and systems security personnel in IA incident response.

Bring your technology expertise and drive for innovation to GDIT.

• Education: Bachelor’s degree in computer science, Information Technology, or a related field. 

• Experience: Minimum 8 years of systems administration experience 

• Technical skills:

  • Expertise in Windows/Linux server management, virtualization, and cloud platforms (e.g., Microsoft Azure, AWS) 

  • Proficiency in scripting (PowerShell, Bash), automation tools, and infrastructure-as-code (IaC) practices.

  • Security clearance level: TS

  • US citizenship required

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.

#gditpriority

#armajobs

The likely salary range for this position is $148,750 - $201,250. 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 Weekly Hours:

40

Travel Required:

Less than 10%

Telecommuting Options:

Onsite

Work Location:

USA VA Fort Belvoir

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 consulting, technology 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 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.

Join our Talent Community to stay up to date on our career opportunities and events at

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Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans