Senior Linux/Unix Administrator

• Install, configure, and maintain Linux/Unix operating systems across physical and virtual server environments
• Monitor system performance, availability, and health; provide Tier 2-3 troubleshooting for OS, application, and infrastructure issues
• Apply patches, updates, and DISA STIGs to ensure compliance with DoD cybersecurity standards
• Support Red Hat Enterprise Linux environments, including Ansible, Satellite, and system automation
• Assist with deploying and managing virtual machines and storage systems (VMware, NetApp)
• Maintain accurate system documentation, operational checklists, and configuration records
• Follow established change management and configuration control procedures for all updates and installs
• Provide system health and status reporting, including patching, compliance, and outage information

• Active Top Secret security clearance and eligible for SCI access
• Cloud+ or GICSP or SSCP or Security+ or GSEC certification required
• At least 8 years of hands-on experience administering Linux/Unix systems in secure or enterprise environments
• Proficiency with Red Hat Linux, patching, system updates, and configuration management
• Familiarity with VMware environments and NetApp storage solutions
• Strong troubleshooting skills with experience providing Tier 2-3 support
• Ability to follow supported procedures, change control processes, and maintain documentation
• Excellent communication and teamwork skills to support mission-critical operations

Desired qualifications:

• One of the following certifications is preferred: ITIL 4 Foundations; Red Hat Certified Systems Administrator; or Linux Professional Institute Certification Linux Administrator; or CompTIA Linux+; or Oracle Certified Professional Oracle Linux System Administrator; or Red Hat Certified Engineer; or Oracle Certified Professional Solaris System Administrator; or Red Hat Certified Specialist in Ansible Automation