Linux RHEL System Administrator

Linux RHEL System Administrator

Only qualified Linux RHEL System Administrator candidates located near Plano, TX to be considered due to the position requiring an onsite presence.

Required Education: Bachelor's degree in Computer Science, Information Technology, or related field.

Preferred Certifications: Red Hat certifications such as RHCSA, RHCE are highly desirable. Cloud certifications (AWS, Azure, GCP) are a plus.

Required Skills & Qualifications:

• Strong hands-on experience with Linux RHEL system administration in enterprise environments.
• Deep understanding of system configuration and hardening, networking fundamentals (DNS, DHCP, routing, firewalls), storage management (LVM, NFS, iSCSI), system monitoring and log analysis.
• Proficiency with shell scripting (Bash, sh) for automation.
• Experience with package management (YUM, DNF) and system services (systemd).
• Working knowledge of LDAP (NSS/PAM/SSSD) and Sendmail/SMTP.
• Database exposure.
• Familiarity with virtualization technologies (VMware, KVM, etc.).
• Strong troubleshooting and analytical skills.

Key Responsibilities:

• Administer, configure, and maintain RHEL-based Linux servers across production, staging, and development environments.
• Perform system installation, patching, upgrades, kernel tuning, and performance optimization.
• Manage user accounts, permissions, file systems, storage, and networking configurations.
• Monitor system health, automate routine tasks, and ensure high availability and uptime.
• Troubleshoot complex OS-level issues and provide root-cause analysis.
• Implement and maintain security best practices, including SELinux, firewalls, and vulnerability remediation.
• Support backup, recovery, and disaster recovery processes.
• Collaborate with application, network, and security teams to support business-critical workloads.
• Document system configurations, procedures, and operational standards.

Good-to-Have (Cloud & DevOps Skills):

• Experience with cloud platforms such as AWS, Azure, or GCP.
• Knowledge of Infrastructure as Code tools (Terraform).
• Exposure to CI/CD pipelines and tools like Jenkins, GitLab CI, or GitHub Actions.
• Familiarity with configuration management tools (Ansible, Puppet, Chef).
• Understanding of containerization (Docker) and orchestration (Kubernetes, OpenShift).
• Experience with monitoring tools (Prometheus, Grafana, Nagios, Zabbix).

Soft Skills:

• Strong communication and documentation abilities.
• Ability to work independently and collaboratively in a fast-paced environment.
• Problem-solving mindset with attention to detail.
• Commitment to continuous learning and staying current with emerging technologies.