Systems Administrator (VDI) — TS/SCI

Virtual Desktop Infrastructure (VDI) Systems Engineer Location: Dayton, OH Work Model: Fully onsite at NASIC Clearance: Active TS/SCI

Overview Rackner is seeking a Virtual Desktop Infrastructure Engineer to support the VDI Engineering and Endpoint Management team. The VDI Engineer will work within a team responsible for the implementation, management, maintenance, security compliance, and documentation of the organization’s multi-cloud Virtual Desktop Infrastructure (VDI) and thin-client endpoint environment.

Responsibilities

Manage and maintain 10ZiG thin-client environments hosted in AWS, including device configurations, firmware updates, security patches, certificates, andendpoint enrollment

Configure and support VDI environments, including Azure Virtual Desktop (AVD), AWS Workspaces, and Horizon

Build and maintain virtual desktop images, user profiles, applications, host pools, and scaling configurations

Test VDI performance and compatibility, gather user feedback, and make improvements to desktop environments

Work with Information System Security Officers (ISSOs) to support security compliance and continuous monitoring requirements

Apply and maintain DISA STIGs across virtual desktops, Active Directory, thin clients, and cloud resources

Support ATO and CTO activities by preparing technical documentation, testing configurations, and gathering required evidence

Develop and maintain technical documentation, including CONOPS, SOPs, and system architecture documentation

Qualifications/Experience Preferred

VDI Administration: experience administering at least one of the primary VDIplatforms (AVD, AWS WorkSpaces, Horizon)

Endpoint Management: Experience configuring and operating 10ZiG Manager or equivalent thin-client deployment consoles

Scripting & Automation: Proficiency with scripting languages (PowerShell,Bash, or Python) to automate template deployment, cloud resource scheduling, and user profile management

Infrastructure Security: Documented experience executing STIG checklists and supporting CTO/ATO documentation packages in highly regulated enterprise environments

Writing Capabilities: Strong technical communication skills, with experience drafting standard operating procedures (SOPs), technical design blueprints, and system whitepapers

CompTIA Security+ (DoD 8570 / 8140 IAT Level II baseline) OR a globally recognized equivalent certification is MANDATORY

Preferred Certifications:

Microsoft Certified: Azure Virtual Desktop Specialty

AWS Certified Solutions Architect or SysOps Administrator

VMware Certified Professional - Desktop and Mobility (VCP-DTM) or Omnissa Horizon credentials

About Rackner Rackner is a software consultancy focused on building mission-critical systems for the U.S. government. Our teams work across cloud platforms, DevSecOps, AI/ML, distributed systems, and modern software engineering initiatives supporting federal agencies and national security missions. Rackner engineers and technical teams collaborate closely with leadership, program teams, and mission stakeholders to design, demonstrate, and improve software systems that address complex operational challenges.

Benefits & Perks At Rackner, we believe that when our people grow, our company grows with them, and we are committed to supporting their growth, development and success. We are proud to offer a creative and forward-thinking environment that includes:

Company-supported certifications aligned to current and future program work, including cloud, Kubernetes, DevSecOps, security, AI/ML, project management, and related technical areas

Clear advancement tracks and future leadership opportunities

401(k) with 100% match up to 6%

Comprehensive medical, dental, vision, life, and disability coverage

Generous PTO and paid holidays

Home-office equipment plan and remote work support

Fitness and wellness reimbursement

Weekly pay schedule and modern perks, including team events

Equal Opportunity Rackner is an equal opportunity employer and considers all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or other protected characteristics.