Senior Linux/UNIX System Administrator

Gcubed Enterprises; Florida; On-site; USD 75,000 - 90,000; Full time

Job summary

Gcubed Enterprises in Brevard County, FL is seeking a Linux/UNIX System Administrator to manage and maintain our Linux-based systems, ensuring performance, security, and reliability. The role includes resource management, proactive maintenance, troubleshooting, and supporting cloud-based Linux environments.

You will train junior staff, assist in migrations, and contribute to backup, DR planning, and automation through scripting.

Qualifications

• 5+ years of experience in Linux/UNIX system administration.
• Strong knowledge of RedHat 7.x and Solaris.
• Security+ certification required; RHCSA/RHCE preferred.

Responsibilities

• Administer Linux/UNIX-based systems (RedHat/Solaris) ensuring daily operations.
• Perform proactive space management, scalability improvements, and high-availability.
• Support system migrations, including cloud integrations and physical-to-virtual conversions.
• Implement backup and disaster recovery strategies.
• Troubleshoot complex system issues and perform root-cause analysis.
• Develop scripts to automate administrative tasks and assist hardware refresh cycles.

Skills

Linux/UNIX administration

Security+ certification

IAT Level 2

Top Secret Clearance

Tools

Docker

Kubernetes

RHCSA/RHCE

Job description

Job Details: Job Location: Brevard County , FL 32925, Salary Range: $75,000.00 - $90,000.00 Salary/year, Job Description: The Linux/UNIX System Administrator will manage and maintain AFTAC’s Linux-based systems, ensuring optimal performance, security, and reliability. This role will involve managing system resources, performing proactive system maintenance, handling troubleshooting tasks, and supporting cloud-based Linux environments. The administrator will also provide training and guidance to junior staff and assist in system migrations.

Key Responsibilities

• Administer Linux/UNIX-based systems, including RedHat and Solaris, ensuring smooth day-to-day operations.
• Perform proactive space management, scalability improvements, and implement high-availability strategies.
• Support system migrations, including physical-to-virtual conversions and cloud integrations.
• Implement backup and disaster recovery strategies.
• Troubleshoot complex system issues and perform root cause analysis to ensure system uptime.
• Develop and document scripts for automation of administrative tasks.
• Assist in the development of IT infrastructure replacement plans and hardware refresh cycles.

Qualifications

Required Qualifications

• 5+ years of experience in Linux/UNIX system administration.
• Strong knowledge of RedHat 7.x, Solaris, and other Linux variants.
• Certifications: Security+ required, RHCSA, RHCE (Red Hat Certified Engineer) preferred.
• Experience with containerization technologies (e.g., Docker, Kubernetes) is a plus.
• Top Secret Clearance
• IAT Level 2
• Oracle (Solaris) Certified Associate and/or Red Hat Certified System Administrator

Desired Qualifications

• Oracle Solaris 11 Systems Administration I, II, III
• Oracle Solaris 11 Logical Domains
• Oracle Solaris 11 Zones
• Oracle Solaris 11 Essentials and Shell Oracle
• Solaris 11 ZFS Administration
• Oracle Solaris 11 Security Administration
• Oracle Solaris 11 Performance Tuning and Management
• Red Hat Automation with Ansible
• Red Hat System Administration I, II, III
• Red Hat Certified Engineer (RHCE)
• Red Hat Satellite Administration
• Red Hat Enterprise Virtualization
• Comptia Linux+