System Administrator

System Administrator
Network Engineers | Storage Engineers | Platform Engineers
Locations: Maryland and Utah
Clearance Required: Active TS/SCI with Full Scope Polygraph

Position Overview
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 Full Scope Polygraph security clearance.
• 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
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.