System Administrator Jobs

System Administrator (All Levels)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.ResponsibilitiesMonitor, 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 QualificationsActive 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 QualificationsUnderstanding 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 TechnologiesLustre 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 TechnologiesTCP/IP networking and storage networking concepts.Experience with enterprise routing and switching platforms, including Cisco, Juniper, Arista.Emerging Technologies Experience or interest in learning: E1000 Storage Systems, Elastic Storage Nodes (ESNs), DAOS (Distributed Asynchronous Object Storage), Weka Data Platform.Performance and Benchmarking Tools Experience with one or more of the following: 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. We value professionals who: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 OST has been providing mission-critical support to Government agencies since 1996 and offers a comprehensive benefits package including: 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. Job # 1134 group id: 91090951