System Administrator

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.

• Active TS/SCI with Polygraph security clearance.
• U.S. Citizenship.

• Experience administering Linux operating systems, including: o Red Hat Enterprise Linux (RHEL) o CentOS o Rocky Linux o SUSE Linux Enterprise Server (SLES) o Ubuntu

• Experience with: o Linux installation and configuration o File system administration o TCP/IP networking o Operating system troubleshooting o Application troubleshooting o Bash scripting o 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: o InfiniBand o Slingshot

• Experience with: o Jira o Confluence o Grafana o Prometheus o Nagios o Slurm o Git o Salt o 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: o Cisco o Juniper o 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, 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.

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.