System Administrator

System Administrator – TS/SCI w/ Polygraph

Location: Annapolis Junction, MD
Work Model: 100% Onsite
Type: Direct Hire (W2)
Compensation: Up to $150,000/year
Schedule: 40 hours/week
Clearance Required:
Active TS/SCI with Polygraph (required)

We’re hiring System Administrators at multiple experience levels to support mission‑critical operations in Linux‑based, high‑performance environments
. This role is ideal for someone who enjoys hands‑on troubleshooting, optimizing system performance, and working closely with engineering and operations teams to keep essential infrastructure reliable and available.

This team includes professionals who specialize in platform
, network
, and storage engineering—but everyone is expected to contribute to core Linux system administration and operational sustainment work.

• Monitor, maintain, and troubleshoot systems and infrastructure supporting mission operations
• Install, configure, and administer Linux operating systems and applications
• Manage file systems, networking services, and system resources
• Troubleshoot operating system and application issues in complex environments
• Write and maintain Bash scripts to automate administrative tasks
• Compile, install, configure, and support software applications
• Support automation and configuration management initiatives
• Collaborate with engineering/operations teams to resolve issues and improve performance
• Document configurations, procedures, and troubleshooting steps
• Participate in upgrades, maintenance windows, and operational support activities

• Active TS/SCI with Polygraph
• Linux administration experience with one or more of the following:
  • RHEL, CentOS, Rocky Linux, SLES, Ubuntu
• Experience with:
  • Linux installation/configuration
  • File system administration
  • TCP/IP networking fundamentals
  • OS and application troubleshooting
  • Bash scripting
  • Software compilation and installation
• Strong analytical troubleshooting skills and ability to work both independently and on a team

• Exposure to or understanding of High‑Performance Computing (HPC) environments
• Experience supporting large‑scale enterprise or mission‑critical infrastructure
• Familiarity with high‑speed networking such as Infini Band and/or Slingshot
• Tools/Platforms:
  • Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, Git, Salt, Ansible

If you have a background in storage, networking, or infrastructure engineering, you’re highly encouraged to apply.

Storage technologies (preferred):

• Lustre configuration/administration/troubleshooting
• DDN Exascaler appliances
• Storage fabric design/support
• Storage performance tuning/optimization

Networking technologies (preferred):

• Enterprise routing/switching (Cisco / Juniper / Arista)

Bonus (emerging tech exposure):

• E1000 Storage Systems, ESNs, DAOS, Weka

Benchmarking/diagnostics tools:

• IOR, iperf, FIO,

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.