Systems Administrator with Security Clearance

US Citizenship is Required. Ability to qualify for a US Department of Defense security clearance required. Candidate must be SAP program eligible. This position is in-person in our Arlington, VA office. Toyon Research Corporation is seeking a Systems Administrator to join our IT team, supporting a small, collaborative group responsible for the health, security, and availability of our systems. This is a hands-on, customer-facing role.

The ideal candidate will be comfortable wearing multiple hats, troubleshooting a wide range of issues, and engaging directly with internal customers with a service-oriented mindset. The role carries responsibility for remediating security findings and vulnerabilities, maintaining systems, and ensuring uptime across servers, storage, and endpoints, and requires a candidate committed to continuous learning through formal training and self-teaching. Responsibilities

• Remediate security findings and vulnerabilities across the environment
• Perform system maintenance and troubleshoot servers, storage, and endpoints
• Monitor systems and maintain availability/uptime
• Build and configure Windows and Linux virtual machines for various purposes
• Apply operating system security hardening techniques (Windows, Linux), including STIGs and other industry standards
• Support day-to-day IT customer service needs across the organization Requirements
• Associate’s degree in computer science or related field
• 2+ years of experience with both Windows and Linux systems
• IAT Level II certification required (Security+ CE at minimum)
• Experience with virtualization technologies and hypervisors (e.g., VMware, Hyper-V)
• Understanding of basic networking concepts (DNS, network segmentation, basic routing)
• Experience with Windows 11, Windows Server, Active Directory, and Group Policy Management
• Experience with Red Hat Enterprise Linux and its derivatives/offshoots
• Strong written and verbal communication skills; comfortable in a customer-facing capacity
• Willingness and ability to work collaboratively on a small team, covering a broad range of responsibilities

Preferred Qualifications

• Familiarity with scripting languages (e.g., Bash, PowerShell) for automating security tasks
• Familiarity with Ansible
• Familiarity with backend storage appliances and storage management (NAS products)
• Familiarity with Virtual Desktop Infrastructure (VDI) and Zero/Thin client architecture