SME Linux Systems Administrator

Job Description

The compensation for this role will be competitive and is aligned with industry standards, taking into consideration factors such as experience, education, and geographic location. The base salary range for this position is $126,500 to $159,000 (USD), exclusive of any discretionary bonuses and benefits.

Mission Edge is seeking an experienced Linux Systems Administrator / Infrastructure SME to support and maintain enterprise systems in a secure, mission-critical environment. This role is primarily focused on Red Hat Linux administration, server infrastructure, networking, automation, system maintenance, and troubleshooting, with responsibility for supporting applications and data services hosted across physical and virtual environments.

The ideal candidate is a hands‑on technical professional who can independently troubleshoot complex system issues, maintain reliable and secure Linux environments, automate administrative tasks, and work effectively across systems, networking, security, and application teams.

• Administer, configure, maintain, and troubleshoot Red Hat Enterprise Linux (RHEL) and other Linux-based systems.
• Install, upgrade, patch, and maintain Linux operating systems and Intel-based server systems.
• Perform routine system health checks, maintenance, troubleshooting, and performance monitoring.
• Diagnose and resolve complex issues involving Linux systems, applications, networking, and infrastructure.
• Support servers and services across physical and virtual environments.
• Configure and maintain system services, storage, networking, and related infrastructure.
• Troubleshoot network connectivity and understand how TCP/IP, routing, firewalls, and network services impact application and system operations.
• Develop and maintain Bash, Shell, and Python scripts to automate system administration and repetitive tasks.
• Support configuration management and automated system maintenance using tools such as Ansible or Puppet.
• Create, maintain, and restore system backups and support disaster recovery activities.
• Apply Linux security best practices and support system hardening, vulnerability remediation, and security compliance requirements.
• Install, configure, and support servers and infrastructure equipment in datacenter/rack-mounted environments.
• Document system configurations, procedures, architecture, maintenance activities, and troubleshooting processes.
• Collaborate with network, security, application, and infrastructure teams to resolve technical issues and maintain system availability.
• Participate in scheduled and occasional after-hours maintenance windows as required.

• Due to the nature of this position and the information that employees willbe requiredtoaccess;
  
  U.S. Citizenship is required.
• Active TS/SCI w/ polygraph
• Bachelor's degree in a technology-related discipline and 5+ years of relevant experience, or 12 years of relevant experience in lieu of a degree.
• 5+ years of hands‑on Linux systems administration experience, preferably with Red Hat Enterprise Linux (RHEL).
• Strong understanding of Linux system administration, troubleshooting, installation, configuration, patching, and maintenance.
• Strong understanding of networking fundamentals, including TCP/IP, UDP, routing, firewalls, and network connectivity.
• Experience troubleshooting systems in enterprise or mission‑critical environments.
• Experience writing and maintaining Bash/Shell and Python scripts for system administration and automation.
• Experience with server backup, restoration, and disaster recovery processes.
• Experience supporting physical and/or virtual server environments.
• Ability to troubleshoot complex technical problems and work independently with minimal supervision.
• Strong written and verbal communication and documentation skills.

• Experience with Ansible, Puppet, or other configuration‑management/automation tools.
• Experience supporting Cisco network infrastructure and network troubleshooting.
• Familiarity with Dell server hardware and iDRAC.
• Experience deploying, configuring, and maintaining multiple servers in datacenter environments.
• Familiarity with Linux…