System Administrator 2 – Linux Infrastructure

About the role

Columbia Technology Partners is looking for a System Administrator 2 to support, maintain, and optimize Linux‑based IT systems across enterprise environments. The role focuses on mission‑critical operations, advanced troubleshooting, and ensuring reliable performance of infrastructure.

Key responsibilities

• Provide implementation, troubleshooting, and maintenance support for IT systems.
• Perform Tier 1 and Tier 2 problem identification, diagnosis, and resolution.
• Manage day‑to‑day system operations, including monitoring, maintenance, and updates.
• Configure, manage, and troubleshoot Linux operating systems (RHEL, CentOS, Rocky, SLES, Ubuntu).
• Support OS installation, file‑system management, TCP/IP networking, and software lifecycle activities.
• Troubleshoot system, application, and infrastructure issues in mission environments.
• Utilize automation and configuration‑management tools such as Salt and Ansible.
• Monitor systems with Nagios, Prometheus, Grafana, and Splunk.
• Collaborate using Jira, Confluence, Git, and Slurm for workload and system management.
• Assist with performance optimization and capacity planning.

Required profile

• Bachelor's degree in a technical discipline (or 5 + years equivalent experience).
• Minimum 5 years of experience as a System Administrator in similar environments.
• DoD 8570 IAT Level II certification (or equivalent).
• U.S. citizenship and ability to obtain an active security clearance with polygraph.

Required skills

• Linux system administration (RHEL, CentOS, Rocky, SLES, Ubuntu).
• Automation/configuration tools: Salt, Ansible.
• Monitoring tools: Nagios, Prometheus, Grafana, Splunk.
• Version control and collaboration: Git, Jira, Confluence, Slurm.
• Scripting with Bash.
• TCP/IP networking and file‑system management.