System Administrator

System One Holdings, LLC

$150K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Active TS/SCI with Polygraph required
  • Linux administration experience (RHEL, CentOS, Rocky Linux, SLES, Ubuntu)
  • Proficient in installation/configuration and file system administration
  • Familiar with TCP/IP networking fundamentals
  • Strong Bash scripting skills
  • Analytical troubleshooting abilities
  • Ability to work independently and collaboratively

Responsibilities

  • Monitor, maintain, and troubleshoot systems and infrastructure
  • 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 tasks
  • Compile, install, configure, and support software applications
  • Collaborate with engineering and operations teams to enhance system performance

Benefits

  • Hands-on experience in Linux-based, high-performance environments
  • Support for Automation and Configuration Management initiatives
  • Access to professional development through exposure to emerging technologies like E1000 Storage Systems and high-speed networking
  • A team-centric environment that values collaboration and problem-solving
Full Job Description
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

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