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# Senior VMware / Horizon Engineer

- **Company:** ASGN Incorporated
- **Location:** Linthicum Heights, MD, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Computer-Aided Design, Active Directory, Backup Devices, Digital Libraries, Disaster Recovery, VMware ESX Servers, Windows Servers, Network Virtualization, PowerCLI, Windows PowerShell, Virtualization Technology, VMware VSphere, Backup and Restore, Data Logging, Build Management, Deployment Automation, Vcenter, Vmware
- **Published:** October 14, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9241100/senior-vmware-horizon-engineer

## About the Role

* 8+ years of VMware engineering, including design and build of production vSphere environments.
 * 5+ years of hands-on Horizon (7 or 8) design and administration, including connection servers, instant clones, golden images, and profile management.
 * Experience supporting VDI at scale, ideally hundreds to thousands of users, including thin or zero clients.
 * Strong PowerCLI and PowerShell scripting.
 * Working knowledge of storage, backup, Windows Server, Active Directory, and virtual networking.
 * Experience in isolated, air-gapped, CUI, or other restricted environments, including offline patching., * GPU or vGPU VDI for engineering and CAD workloads.
 * Experience with VMware NSX, Aria Operations (vRealize), or Site Recovery Manager.
 * Experience with VMware migrations or platform evaluations, including licensing changes and alternative hypervisors.
 * Experience applying DISA STIGs to ESXi, vCenter, and Horizon.
 * VCP-DCV and VCP-DTM (Desktop/Horizon), VCAP, or VCDX certifications.

## Description

vSphere Platform

 * Design and build vSphere clusters on transferred Dell and HPE hardware, including ESXi, vCenter, HA, DRS, vMotion, resource pools, and distributed switching.
 * Plan capacity for up to 800 users with headroom, using pilot-wave measurements to refine host, storage, and VDI density.
 * Integrate storage and backup, validate restores before migration, and build templates and content libraries for repeatable server builds.
 * Harden ESXi and vCenter using VMware security configuration guidance and DISA STIGs; implement role-based access and central logging.
 * Manage patching and upgrades through offline depots and the controlled ingress process, since the environment has no direct internet access.

Horizon 8 VDI

 * Design and build the Horizon 8 environment, including paired connection servers, desktop pools, instant clones, and App Volumes or Dynamic Environment Manager as appropriate.
 * Build and maintain golden images, and tune them for engineering and CAD-type workloads, including GPU or vGPU where needed.
 * Re-point thin and zero clients to the new environment, migrate user profiles, and validate engineering applications and license-server access with each migration wave.
 * Monitor session performance and user experience, and resolve logon, display protocol, and application issues during hypercare.

Lifecycle, Automation, and Advisory

 * Automate provisioning and configuration with PowerCLI, templates, and version-controlled scripts.
 * Assess platform health, end-of-life timelines, and licensing ahead of the 2027 renewal, and provide options and cost inputs for platform and refresh decisions.
 * Produce as-builts, runbooks, SOPs, and Horizon recommendations on architecture, scaling, and future management.
 * Mentor systems administrators and client staff to build in-house virtualization skills before the move to managed operations.