Systems Administrator

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:
Information Technology (IT) Systems, Linux, Microsoft Windows, Operating Systems (OS), Software Updates

Certifications:

None

Experience:

5 + years of related experience

US Citizenship

Required:

Yes
Job Description: SYSTEMS ADMINISTRATOR SENIORAdvance how our customers operate while you advance your career. Join GDIT as a Systems Administrator Senior and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.

MEANINGFUL WORK AND PERSONAL IMPACT
As a Systems Administrator Senior at GDIT, you will directly support the mission of the customer by ensuring the reliability, security, and availability of critical Sense & Warn (S&W) systems. You will provide hands‑on administration and operational support for Windows and Linux environments across both enterprise and fielded systems. This role supports mission readiness by maintaining system availability, performing troubleshooting, and ensuring systems operate effectively in deployed and limited‑connectivity environments.

You will assist with system deployments, patching, backup and recovery, and documentation to support operational continuity and compliance requirements. Working closely with engineers and operational teams, you will help resolve technical issues and contribute to continuous improvement of mission systems. Your work ensures the customer maintains consistent situational awareness and operational capability in support of mission objectives.

WHAT YOU’LL NEED TO SUCCEED
Bring your technology expertise and drive for innovation to GDIT. The Systems Administrator Senior must have:

• Education:
  
  Technical Training, Certification(s) or Degree
• Experience:
  
  3+ years of related experience
• Technical skills:
  Troubleshooting, Active Directory, Technical Support, Customer Service, MS Office, System Software, Documentation, Maintenance, Windows 64, Installation, Security, Database, VPN, Networking, Teamwork, Operations, Questioning Skills, LAN/WAN, Deployments, Windows Server, Backup & Recovery, VMWare Software, Firewalls, Dynamic Host Configuration Protocol, Linux
• Security clearance level:
  DoW Secret with the ability to obtain a Top Secret
• US citizenship required

Skills and

Competencies:

• Self‑motivated with the ability to work effectively under minimal supervision.
• Strong interpersonal skills with the ability to interact professionally, diplomatically, and tactfully across all levels of an organization.
• Ability to work as part of a cohesive team while maintaining a positive attitude.
• Strong multitasking skills and attention to detail in a fast‑paced environment.
• Excellent verbal and written communication skills.
• Proficiency in Microsoft Windows operating systems and office automation software, including Microsoft Office and SharePoint.
• Community:
  Award‑winning culture of innovation and a military‑friendly workplace
• Troubleshooting;
  Active Directory;
  Technical Support;
  Customer Service;
  Documentation;
  System Installation and Maintenance;
  Windows 10/11;
  Windows Server;
  Linux (RHEL, Debian);
  Proxmox VE;
  Backup and Recovery; VPN;
  Networking;
  Firewalls; LAN/WAN; DHCP; DNS;
  Security;
  Patch Management;
  Database Basics;
  Deployments;
  Operations;
  Teamwork.

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

Travel and Medical Requirements

• The Sense & Warn (S&W) Systems Administrator must be prepared to travel to both domestic and international work locations, including high‑threat and austere environments, as necessary to support the inspection, maintenance, and quality assurance of S&W…