Virtual Applications System Administrator

Virtual Applications System Administrator

RTX is seeking an experienced Virtual Applications System Administrator to support enterprise-level virtualized environments and endpoint management solutions for classified and unclassified programs. The ideal candidate will have a strong background in virtualization, cross-domain technologies, secure application delivery, and large-scale systems administration. This role requires working within DoD-compliant environments and supporting mission-critical capabilities for national defense customers.

This position can be in Tucson AZ, Tewksbury MA, or Richardson TX.

What You Will Do:

• Provide administration, sustainment, and operational support for application services, virtualization infrastructure, and virtual desktop infrastructure operating within Classified Digital Services environments.
• Install, configure, maintain, patch, secure, and troubleshoot Windows-based application servers, virtual machines, virtual desktops, supporting services, and associated platform components.
• Support VDI platforms and virtual application delivery technologies, including virtual desktop pools, persistent and non-persistent desktop images, connection brokers, agent software, user profiles, published applications, and supporting infrastructure.
• Troubleshoot complex issues involving application delivery, virtual desktops, virtualization platforms, authentication, storage, networking, user profiles, printing, peripheral access, performance, and security-tool integration.
• Work with cybersecurity professionals to support vulnerability remediation, application and operating system patching, DISA STIG compliance, secure configuration baselines, scanning activities, findings resolution, and audit evidence requirements.
• Support the integration of application services and VDI platforms with enterprise identity, endpoint-management, monitoring, logging, vulnerability-management, and cybersecurity capabilities.
• Use automation and scripting technologies such as PowerShell, Ansible, Python, or comparable tools to improve application deployment, VDI administration, patching, configuration management, compliance validation, and operational sustainment activities.
• Identify opportunities to automate repetitive administration tasks, image maintenance, application delivery, health checks, reporting, patch validation, or secure configuration activities.
• Participate in testing and implementation of infrastructure changes, application upgrades, desktop-image updates, software deployments, security patches, and platform modernization initiatives.
• Assist with monitoring service health, platform capacity, virtual desktop availability, application performance, resource utilization, system events, and operational trends.
• Support account administration, privileged access, application permissions, service accounts, group-policy dependencies, and other access-control requirements in accordance with approved security procedures.
• Create and maintain standard operating procedures, system administration guides, application support documentation, VDI support procedures, architecture diagrams, automation documentation, test plans, implementation plans, troubleshooting guides, and knowledge articles.
• Provide technical support during service disruptions, root-cause investigations, recovery activities, planned maintenance, and mission-critical operational events.
• Perform other duties and assignments in support of CDS application, virtualization, endpoint, and cybersecurity operations.

Qualifications You Must Have:

• Typically requires a University Degree or equivalent experience and minimum 8 years prior relevant experience, or an Advanced Degree in a related field and minimum 5 years experience
• Active DoD Secret clearance (interim not accepted).
• An active and transferable U.S. government-issued Secret security clearance is required on day one of employment.
• Must be able to obtain and maintain a Department of Defense Directive 8140 / 8570-compliant baseline certification, such as CompTIA Security+ CE or an approved equivalent, within 6 months of start date unless already held.

Qualifications We Prefer:

• Experience administering Omnissa Horizon or VMware Horizon, including desktop pools, connection servers, agents, golden images, instant clones, application delivery, or user-profile solutions.
• Experience administering VMware virtualization platforms, including vCenter, ESXi hosts, virtual machines, templates, snapshots, clusters, resource allocation, and troubleshooting.
• Experience supporting non-persistent VDI environments and maintaining standardized desktop images, application layers, user-profile technologies, or secure configuration baselines.
• Experience supporting application packaging, deployment, lifecycle management, middleware, web services, database dependencies, licensing services, or application-hosting platforms.

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