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# Expert System Administrator (Virtual Infrastructure & Cluster Ma

- **Company:** Cornerstone Defense
- **Location:** College Park, MD, United States
- **Salary:** $220,000.0 - $240,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Confluence, JIRA, Unix, Ubuntu (Operating System), Linux, Expert Systems, Network Security, Network Planning and Design, Ansible, VMware Infrastructure, Network Support, Slurm, Network Server
- **Published:** June 9, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8963410/expert-system-administrator-virtual-infrastructure-cluster-ma

## About the Role

Fifteen (15) years' experience as a SA, in programs and contracts of similar scope, type, and complexity is required. Bachelor's degree in a technical discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a bachelor's degree., * Experience with multiple operating systems (Windows, Linux, Unix)

 * Experience with Ubuntu
 * Familiar with System and Network security policies and able to implement policies
 * Maintain and administer systems and networks (monitoring, patching, troubleshooting)
 * Maintaining and deploying VMs. Able to build VMs.
 * Assist in annual inventory activities
 * Experience with Ansible
 * Create and maintain system and network documentation
 * Experience with Jira and Confluence
 * Responsive to users
 * Able to set up enclaves
 * Experience with system hardware
 * Experience with NetBox
 * Managing SLURM
 * Cluster management experience
 * DevOp experience

Desired Skills:

 * STE/STN
 * Demonstrates follow through on policies and tasking
 * Update Jira tickets, resolve issues, and close tickets

## Description

Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *, The System Administrator shall maintain existing customer network resources located XX miles from NSAW. Responsible for supporting servers, current hardware, storage, virtual infrastructures with VMs, new hardware, and resources. Responsible for day-to-day operations, creating/deleting VMs, security updates, troubleshooting, resolving issues, managing tickets (Jira). Familiar with automation tools and building of workflows. Responsible for keeping networks up-to-date utilizing industry best practices and be able to advise on system and network designs, mission architectures, and simplify and streamline network maintenance tasks.


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