Linux Systems Administrator

Job Title: Linux Systems Administrator

Clearance Required: Public Trust US Citizen;
Public Trust (National Agency Check with Inquiries (NACI)) 0

Work Location: Boulder, CO (Hybrid with required days on site)

Alpha Omega is searching for an experienced Linux Systems Administrator to join one of our long-term Federal projects. This position provides administration, maintenance, troubleshooting, and operational support for Red Hat Enterprise Linux (RHEL) systems and associated enterprise services in a mission-focused environment. The role also includes limited hands‑on IT hardware and operational support responsibilities during onsite support hours.

• Administer, maintain, and support Red Hat Enterprise Linux (RHEL) server environments.
• Perform Linux system administration activities including user and group management, file system management, service monitoring, log review, and system troubleshooting.
• Support Identity Management (IdM) services and user account administration.
• Assist with server provisioning, configuration, deployment, and lifecycle management.
• Perform operating system patching, updates, and vulnerability remediation activities.
• Support vulnerability mitigation efforts in coordination with cybersecurity and infrastructure teams.
• Utilize automation and configuration management tools such as Ansible to support system administration tasks.
• Monitor system health and infrastructure status using monitoring platforms such as Nagios and Zabbix.
• Troubleshoot Linux system issues, application support issues, and operational incidents.
• Provide Tier 1 and Tier 2 support for Linux-related user issues and server incidents.
• Respond to requests for technical assistance via phone, e‑mail, in person, or the NCEI Jira ticketing application.
• Support walk‑up requests from NCEI employees when it is not feasible for the employee to submit a support request.
• Provide incident and problem management for all issues reported by creating, updating, and managing requests.
• Escalate service requests in accordance with established procedures and document escalation or resolution as appropriate.
• Address assigned incidents and problems in a timely manner, consistent with applicable SLAs and established protocols.
• Support compliance with organizational security policies, STIG requirements, and configuration management standards.
• Assist with IT hardware support activities during onsite operations including equipment setup, peripheral support, and basic hardware troubleshooting.
• Document technical procedures, configurations, operational activities, and troubleshooting steps.
• Participate in maintenance windows and occasional after‑hours operational support activities as required.
• Work independently and with minimal supervision.
• Adhere to NCEI change, configuration, and security guidelines.

• Minimum Years of Overall
  
  Experience:
  
  2
• Minimum Years of Specific Experience in Field: 2
• Experience supporting Linux systems in an enterprise environment.
• Experience administering Red Hat Enterprise Linux (RHEL) systems.
• Familiarity with Linux command line administration, user and permission management, system patching, and shell scripting fundamentals.
• Experience with infrastructure monitoring tools such as Nagios or Zabbix.
• Familiarity with Ansible or other automation/configuration management tools.
• Basic understanding of cybersecurity and vulnerability remediation practices.
• Strong troubleshooting, organizational, and communication skills.
• Ability to work both independently and collaboratively within a team environment.
• Ability to lift and move IT equipment up to 50 lbs.

• Experience with Red Hat Identity Management (IdM).
• Experience supporting virtualization platforms and enterprise backup solutions.
• Experience with STIG compliance and vulnerability remediation processes.
• Basic scripting experience using Bash or Python.
• Experience working in enterprise or government IT environments.
• Experience using ITSM ticketing tools such as Atlassian Jira or similar platforms.
• Basic knowledge of ITIL, Service Desk metrics/SLAs, and infrastructure operations.

• Bachelor’s Degree in Computer Science,…