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) About the Role 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. What You’ll Do 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 Required Qualifications 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 Nice to Have (Strongly Preferred) 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 InfiniBand and/or Slingshot Tools/Platforms: Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, Git, Salt, Ansible Storage / Networking Experience (A Plus) 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, lnet_selftest 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. #M-1 Ref: #851-Rockville-S1 #J-18808-Ljbffr System One