Systems Administrator - VMware & ArcGIS Enterprise

Public Trust: None

Requisition Type: Regular

Your Impact

Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.

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.

Work Requirements

Years of Experience

5 + years of related experience

* may vary based on technical training, certification(s), or degree

Certification

CompTIA Security+ CE | CompTIA - CompTIA

Travel Required

Less than 10%

Citizenship

U.S. Citizenship Required