System Administrator

System Administrator (All Levels) Specializations: Network Engineers | Storage Engineers | Platform Engineers Locations: Maryland and Utah Clearance Required: Active TS/SCI with Polygraph Citizenship: U.S. Citizenship Required Open Systems Technologies Corporation (OST) is seeking System Administrators at all experience levels to support mission‑critical operations in Maryland and Utah. These funded positions support high‑performance computing (HPC) environments and mission operations sustainment activities, including monitoring, troubleshooting, maintenance, and optimization of complex Linux‑based infrastructures. We are seeking candidates with strong Linux administration skills and a passion for solving complex technical challenges. Whether your expertise is in platform engineering, networking, or storage systems, you will play a critical role in ensuring the reliability, performance, and availability of mission‑essential environments. Responsibilities Monitor, maintain, and troubleshoot mission operations systems and infrastructure. Install, configure, and administer Linux operating systems and applications. Configure and manage file systems, networking services, and system resources. Perform operating system and application troubleshooting in complex environments. Develop and maintain Bash scripts to automate administrative tasks. Compile, install, configure, and support software applications. Support infrastructure automation and configuration management initiatives. Collaborate with engineering and operations teams to resolve system issues and improve performance. Document configurations, procedures, and troubleshooting processes. Participate in system upgrades, maintenance activities, and operational support. Note Regardless of specialization, all team members are expected to perform core Linux system administration functions and contribute to overall system sustainment efforts. Required Qualifications Active TS/SCI with Polygraph security clearance. U.S. Citizenship. Experience administering Linux operating systems, including: Red Hat Enterprise Linux (RHEL) CentOS Rocky Linux SUSE Linux Enterprise Server (SLES) Ubuntu Experience with: Linux installation and configuration File system administration TCP/IP networking Operating system troubleshooting Application troubleshooting Bash scripting Software compilation and installation Strong analytical and troubleshooting skills. Ability to work independently and collaboratively in dynamic mission environments. Desired Qualifications Understanding of High‑Performance Computing (HPC) architectures. Experience supporting large‑scale enterprise or mission‑critical environments. Knowledge of high‑speed networking technologies including: InfiniBand Slingshot Experience with: Jira Confluence Grafana Prometheus Nagios Slurm Git Salt Ansible Storage & Network Engineering Preferred Experience Candidates with storage, networking, or infrastructure engineering backgrounds are highly encouraged to apply. Storage Technologies Lustre file system configuration, administration, and troubleshooting. Experience with DDN Exascaler file system appliances. Storage fabric design, implementation, and support. Storage performance tuning and optimization. Networking Technologies TCP/IP networking and storage networking concepts. Experience with enterprise routing and switching platforms, including: Cisco Juniper Arista Emerging Technologies E1000 Storage Systems Elastic Storage Nodes (ESNs) DAOS (Distributed Asynchronous Object Storage) Weka Data Platform Performance and Benchmarking Tools IOR iperf FIO lnet_selftest What We're Looking For Successful candidates are naturally curious problem‑solvers who enjoy working in complex environments and continuously expanding their technical expertise. Our environments are highly customized, and effective troubleshooting often requires creativity, critical thinking, and a willingness to investigate beyond standard solutions. Demonstrate initiative and ownership. Thrive in collaborative environments. Enjoy learning new technologies. Have a strong commitment to mission success. Possess excellent troubleshooting and analytical skills. Benefits 3 Weeks Paid Time Off 11 Federal Holidays Medical and Dental Coverage Short‑Term Disability (STD) Long‑Term Disability (LTD) Life Insurance Accidental Death & Dismemberment (AD&D) Coverage 401(k) with up to 4% Company Match About OST Open Systems Technologies Corporation (OST) is an Equal Opportunity Employer dedicated to delivering innovative technology solutions and exceptional support to Government customers. We foster a culture of technical excellence, continuous learning, and professional growth while supporting some of the nation's most critical missions. #J-18808-Ljbffr