Senior Systems Engineer; Citrix; TS​/SCI w CI Poly

Title:

Sr. Systems Engineer (Citrix)

Location:

Sterling, VA (Relocation assistance considered)

Clearance required:

Active TS/SCI with CI Polygraph

Employment type:

Full-Time, Onsite

Multiple positions available

MGS is seeking a Sr. Systems Engineer (Citrix) to lead the design, deployment, and optimization of an enterprise Citrix Virtual Desktop Infrastructure (VDI) environment within a secure, cloud-native platform supporting national security missions. In this role, you will deliver scalable, high-performance virtual desktop solutions while maintaining Linux and Windows cloud-based infrastructure, COTS applications, and enterprise computing services across a Dev Sec Ops -driven Agile environment.

Working alongside engineering, cybersecurity, and mission experts, you will implement secure-by-default configurations, drive Infrastructure as Code (IaC) practices, and keep critical environments running at the highest level.

• Design, deploy, and maintain Citrix Virtual Apps and Desktops (CVAD) infrastructure in a 100% cloud environment, including Delivery Controllers, Store Front, Net Scaler/ADC, and supporting components.
• Implement and manage Citrix Provisioning Services (PVS) or Machine Creation Services (MCS) for desktop image management; manage Virtual Delivery Agents (VDAs), hypervisors, and storage systems.
• Optimize VDI performance through monitoring, capacity planning, and resource allocation; configure and manage user profiles using FSLogix.
• Deploy, configure, and maintain Linux and Windows cloud-based infrastructure, COTS applications, and enterprise computing services as IaC and AaC.
• Configure IdAM, Active Directory, and LDAP resources with platform applications.
• Troubleshoot complex technical issues across the VDI and infrastructure stack using log file analysis and root-cause analysis.
• Develop and execute comprehensive test plans; prepare and maintain technical documentation including user guides, infrastructure diagrams, and operational procedures.
• Collaborate with engineering teams and end-users to design and maintain application interfaces and platform solutions.
• Develop within an Agile scrum team following Dev Sec Ops  principles and configuration management standards.
• Prepare technical presentations for government and senior leadership.

• Must possess an active DoD TS/SCI security clearance with CI Polygraph.
• Must meet DoD 8140 requirements, including Security+ CE certification.
• Bachelor's or master's degree in a STEM field. Experience may be acceptable in lieu of a degree.
• 10+ years of experience deploying and maintaining platform infrastructure and COTS applications in cloud-based environments.
• 5+ years of hands‑on experience with Citrix Virtual Apps and Desktops, including expert knowledge of Citrix architecture, components, and deployment methodologies.
• Experience with hypervisor platforms including VMware vSphere, Microsoft Hyper‑V, or Citrix Hypervisor.
• Proficiency with Citrix Net Scaler/ADC configuration and management.
• Strong experience with Windows Server administration and Active Directory.
• Experience with cloud architecture, system design, and enterprise workflow or automation platform integration.
• Experience supporting IdAM technologies including Active Directory, SAML, OpenLDAP, OAuth 2.0, and OIDC.
• Experience with Dev Ops tooling including Ansible, Terraform, Jenkins, and Git Lab.
• Familiarity with containerized development environments including Rancher and Kubernetes.

• Citrix Certified Professional, Virtualization (CCP-V) or higher.
• Experience with Model‑Based Systems Engineering (MBSE) environments and tools.
• Experience optimizing cloud‑hosted solutions and supporting Azure…