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Sigma Defense

Software-driven CJADC2 and C5ISR systems

Virtual Desktop Infrastructure Engineer

Full-TimeUpdated on 10/17/2026
$95k - $136k/yr
Mid
Associate's
Rome, GA, USA
In Person
IT OperationsSystem Administration
No H1B Sponsorship
US Citizenship, US Top Secret Clearance Required

About the job

Requirements
  • At least 4 years of relevant experience.
  • Professional experience supporting Virtual Desktop Infrastructure (VDI) or enterprise Windows desktop environments.
  • Hands-on experience with Microsoft Azure Virtual Desktop (AVD).
  • Working knowledge of Microsoft Azure infrastructure and services.
  • Experience configuring and managing AVD host pools, session hosts, workspaces, and application groups.
  • Experience administering and troubleshooting Windows 10/11 and/or Windows Server environments.
  • Experience with virtual desktop image creation, maintenance, and deployment.
  • Experience with FSLogix profile management.
  • Understanding of Azure networking concepts and their impact on virtual desktop environments.
  • Working knowledge of Microsoft Entra ID, authentication, authorization, and Azure role-based access control (RBAC).
  • Experience troubleshooting user sessions, profiles, applications, authentication, networking, and performance issues.
  • Experience with PowerShell scripting and Windows administration.
  • Must be a U.S. citizen.
  • Must possess or be able to obtain an active Top Secret/Sensitive Compartmented Information (TS/SCI) security clearance.
  • An Associate's degree from an accredited college or university in Information Technology.
  • Must hold CompTIA Security+ and Azure Virtual Desktop Specialty (AZ-140) certifications.
Responsibilities
  • Deploy, configure, administer, and maintain Azure Virtual Desktop (AVD) environments within Microsoft Azure.
  • Configure and manage AVD host pools, session hosts, workspaces, application groups, and published desktops and applications.
  • Support pooled and personal desktop environments based on mission and user requirements.
  • Monitor AVD environments and troubleshoot user-session, performance, connectivity, authentication, application, and profile issues.
  • Build, maintain, test, and deploy standardized Windows desktop and session-host images.
  • Support automated image-management and deployment processes for AVD session hosts.
  • Configure and maintain FSLogix profiles and profile containers.
  • Support application installation, configuration, testing, packaging, and delivery.
  • Configure and maintain AVD scaling plans and optimize session-host utilization and performance.
  • Support Azure compute, storage, networking, and identity resources required by AVD.
  • Integrate AVD environments with Microsoft Entra ID, Azure RBAC, and other Azure identity services.
  • Support secure authentication and access-control requirements.
  • Work with Azure Network Engineers to troubleshoot network connectivity, DNS, routing, firewall, and private-access issues.
  • Work with cybersecurity engineers to implement system-hardening requirements and remediate vulnerabilities.
  • Support Azure Policy, Microsoft Defender for Cloud, and other security and governance capabilities.
  • Develop and maintain automation using PowerShell, Azure CLI, and Infrastructure as Code.
  • Monitor system health, capacity, utilization, and user experience.
Desired Qualifications
  • Experience supporting Azure Virtual Desktop within Azure Government.
  • Experience supporting VDI or AVD environments within a Department of Defense (DoD) or other regulated environment.
  • Experience with large-scale or multi-environment AVD deployments.
  • Advanced experience with FSLogix.
  • Experience with automated Windows image creation and management.
  • Experience with Microsoft Intune and Microsoft Entra ID Conditional Access.
  • Experience with Azure Files, Azure NetApp Files, Azure Monitor, Log Analytics, and AVD Insights.
  • Experience with Microsoft Defender for Cloud and Microsoft Defender for Endpoint.
  • Experience implementing Azure Policy.
  • Experience using Terraform, Bicep, ARM templates, Azure DevOps, or GitHub Actions.
  • Familiarity with DoD RMF, NIST SP 800-53, and STIGs.

About the company

Sigma Defense provides software-driven solutions that improve military communications and decision-making. It specializes in integrating advanced technologies, data analytics, and communication networks to create interoperable systems that share real-time information across all military services and agencies. Its CJADC2 focus means it bridges legacy systems with modern technology to speed access to data and enhance decision-making through sensor analysis and strong network security. The portfolio includes C5ISR, SATCOM, and DevSecOps, and features a Tactical Relay System (a U.S. Government Program of Record) that transports and distributes tactical ISR data. The company uses DevSecOps to enable rapid, secure deployment of capabilities to front-line users, with a team of veterans and technologists developing hardware and software solutions to improve decision quality, speed, and certainty in military operations.

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

Warner Robins, Georgia

Founded

2006

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Simplify's Take

What believers are saying

  • July 2026 SUNet 2.0 positions Sigma inside secure AI infrastructure procurement.
  • February 2026 CANES reaches $102 million, extending Naval networking work through 2033.
  • October 2025 Aries Defense adds UAV sensor fusion and contested-edge ISR distribution.

What critics are saying

  • Cedar Lane Technologies litigation ended in 2023, but IP disputes still distract engineering.
  • February 2026 CANES depends on one Navy program; contract concentration risks revenue shock.
  • SUNet 2.0 is a six-month prototype; failure kills follow-on production and AI ambitions.

What makes Sigma Defense unique

  • June 2026 NSA CSfC Trusted Integrator status validates classified-network credibility.
  • Sigma Software Studio holds Navy and Marine Corps ATOs across IL2, IL4, IL5.
  • Five acquisitions since 2024 deepen CJADC2, EW, SATCOM, and tactical ISR integration.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Life Insurance
  • 401(k) Retirement Plan
  • 401(k) Company Match
  • Paid Vacation
  • Paid Holidays
  • Health Savings Account/Flexible Spending Account
  • Employee Assistance Program
  • Educational Assistance

Company News

PR Newswire
Jul 23rd, 2026
Sigma Defense wins SUNet 2.0 contract to build secure AI platform for Department of War

Sigma Defense has been selected to deliver a SUNet 2.0 prototype under an Other Transaction Agreement. The initiative aims to create a secure environment for artificial intelligence and machine learning development, data collaboration, and mission applications across the Department of War. Under the initial six-month effort, the Georgia-based company will deliver a production-representative Minimum Viable Product. The prototype will enable the government to evaluate core capabilities supporting AI/ML development, data operations, secure collaboration, and technology integration. The programme includes potential for a follow-on production effort. SUNet 2.0 is designed to provide a mission-ready foundation whilst maintaining government ownership of governance, identity, security, data, and operations. Sigma Defense provides mission-critical software and communications systems for the Department of Defense.

Sigma Defense
Oct 13th, 2025
Sigma Defense Acquires Aries Defense

Sigma Defense Systems has acquired Aries Defense to enhance its capabilities in Tactical Edge ISR and CJADC2. The acquisition aims to integrate Aries Defense's expertise in tactical video and sensor integration, particularly in capturing and distributing UAV and unattended sensor data for real-time situational awareness.

Sigma Defense
Apr 22nd, 2024
Driving Innovation: Sigma Defense Expands CJADC2 Capabilities with EWA Acquisition

Driving Innovation: Sigma Defense Expands CJADC2 Capabilities with EWA Acquisition | Perry, GA – April 22, 2024

Sigma Defense
Feb 13th, 2024
Sigma Defense Announces Acquisition of Juno Technologies, Enhancing CJADC2 Capabilities

Sigma Defense LLC, has announced the acquisition of San Diego, CA-based Juno Technologies, enhancing CJADC2 Capabilities

PR Newswire
Feb 12th, 2024
Sigma Defense Systems Launches Sigma Software Studio - A New Devsecops Platform

PERRY, Ga., Feb. 12, 2024 /PRNewswire/ -- Sigma Defense Systems is proud to announce the launch of Sigma Software Studio, a cutting-edge DevSecOps platform poised to revolutionize software development for the DoD and government agencies.Rooted in Sigma's collaboration with PEO Digital and Black Pearl, Sigma Software Studio, is a DevSecOps platform designed for transformation and software modernization across the Department of the Navy. The platform has been accredited with Authority to Operate (ATO) by the U.S. Navy and USMC.Sigma Defense Systems announces the launch of Sigma Software Studio, a DevSecOps platform for government and DoD. Post this Sigma Defense Systems is proud to announce the launch of Sigma Software Studio, a cutting-edge DevSecOps platform poised to revolutionize software development for the DoD and government agencies.Sigma Software Studio, represents a new approach to software development, enabling rapid and secure stand-up of software factories with reduced cost and complexity compared to traditional methods. By providing a proven, secure DevSecOps platform that unifies and streamlines software development processes, Sigma Software Studio, accelerates the deployment of software applications and significantly lowers costs compared to traditional DIY approaches