Req ID: RQ225257
Type of Requisition: Regular
Clearance Level Must Be Able to Obtain: Top Secret/SCI
Public Trust/Other Required: None
Job Family: IT Infrastructure and Operations
Skills:
Backup and Recovery,Information Technology (IT) Systems,System Administration
Certifications:
CompTIA Security+ CE | CompTIA - CompTIA
Experience:
5 + years of related experience
US Citizenship Required:
Yes
Job Description:
Position Overview:
We are seeking a highly skilled Systems Administrator to manage and support a secure, air-gapped virtualized environment running VMware ESXi and ArcGIS Enterprise 12.1. This role combines infrastructure management, enterprise GIS administration, and general IT operations to ensure the reliability, performance, and security of a multi-server ArcGIS deployment.
Key Responsibilities:
VMware / Virtual Infrastructure Administration:
Manage and maintain VMware vSphere environment, including ESXi hosts and vCenter Server Appliance (VCSA)
Provision, configure, and optimize virtual machines across multiple physical hosts
Monitor system performance, resource utilization (CPU, RAM, GPU), and storage
Perform VM lifecycle management (deployment, snapshots, backups, cloning)
Troubleshoot virtualization, networking, and hardware-related issues
Ensure high availability and system resiliency within an offline environment
ArcGIS Enterprise Administration:
Administer ArcGIS Enterprise 12.1 deployment (Portal, Server, Image Server, Web Adaptors, Notebook Server)
Manage site configurations, federation, and security
Publish and maintain GIS services, web maps, and applications
Monitor system health, logs, and performance
Perform upgrades, patches, and backups
Troubleshoot service failures and performance issues
Support ArcGIS Pro users and licensing
Database & Data Management:
Administer Microsoft SQL Server 2019
Manage geodatabases, backups, and data integrity
Optimize database performance for GIS workloads
IT Systems & Network Administration:
Maintain Windows Server 2025 systems
Configure IIS, DNS, and internal networking
Implement security policies in an air-gapped environment
Perform system patching and updates (offline)
Manage user accounts and access controls
Maintain system documentation
Hardware & GPU Resource Management:
Support NVIDIA L40 GPU environments
Allocate GPU resources for ArcGIS Pro VMs
Monitor GIS workload performance
Required Qualifications:
Bachelor's degree in IT, GIS, Computer Science, or related field (or equivalent experience)
Security+ or greater certification
5+ years of systems administration experience
Strong VMware vSphere / ESXi experience
Has or is able to obtain a TS/SCI
ArcGIS Enterprise administration experience
Windows Server administration knowledge
SQL Server experience
IIS/web server knowledge
Preferred Qualifications:
Experience in air-gapped environments
Familiarity with ArcGIS Pro workflows
GPU virtualization experience
Scripting (PowerShell, Python)
Backup and disaster recovery knowledge
Key Skills:
Problem-solving and analytical thinking
Strong communication and documentation
Ability to work independently
Attention to detail
Work Environment:
Able to work in a secure space
Fully disconnected (air-gapped) infrastructure
VMware-based virtualized ecosystem
Multi-server ArcGIS Enterprise deployment
GPU-accelerated compute environment
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 $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.
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 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 https://gdit.com/tc.
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
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.
