Linux RHEL System Administrator

Intone Inc; Plano (TX); On-site; USD 76,000 - 96,000; Full time

Job summary

Intone Inc. in Plano, TX seeks a Linux RHEL System Administrator for an on-site contract role. You will manage enterprise Linux environments, ensure reliability, security, and high performance across production, staging, and development systems.

Responsibilities include administering RHEL servers, patching, tuning kernel, storage and network config, automation scripting, and incident response. Strong knowledge of security, LDAP, and virtualization is required.

Qualifications

• Strong hands-on experience with Linux RHEL system administration in enterprise environments.
• Deep understanding of system configuration and hardening.
• Networking fundamentals including DNS, DHCP, routing, and firewalls.
• Storage management with LVM, NFS, and iSCSI.
• Scripting in Bash for automation and routine tasks.
• YUM/DNF package management and systemd services.
• LDAP (NSS/PAM/SSSD) and Sendmail/SMTP knowledge.
• Experience with virtualization (VMware/KVM).
• Cloud platforms such as AWS, Azure, or GCP.
• Security best practices including SELinux and vulnerability remediation.

Responsibilities

• Administer, configure, and maintain RHEL-based Linux servers across environments.
• Perform system installation, patching, upgrades, kernel tuning, and performance optimisation.
• Manage users, permissions, file systems, storage, and networking configurations.
• Monitor system health, automate tasks, ensure high availability and uptime.
• Troubleshoot OS-level issues and provide root-cause analyses.
• Implement security best practices and remediation activities.
• Support backup, recovery, and disaster recovery processes.
• Collaborate with application, network, and security teams for critical workloads.
• Document configurations, procedures, and standards.

Skills

RHEL admin

System hardening

Networking basics

Storage management

Scripting (Bash)

Package management (YUM/DNF)

LDAP/SSSD

VMware/KVM

Cloud platforms (AWS/Azure/GCP)

Security best practices

Monitoring & logs

Disaster recovery

Education

Bachelor's degree in CS/IT

RHCSA/RHCE certifications

Cloud certifications (AWS/Azure/GCP)

Tools

Terraform

Jenkins

GitLab CI

Docker

Kubernetes

Ansible

Puppet

Chef

Job description

We are seeking a Linux RHEL System Administrator for a contract position in Plano, Texas. This role requires on-site presence and offers the opportunity to work with enterprise Linux environments, managing system reliability, security, and performance across production, staging, and development environments.

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.

Qualifications

Required

• Strong hands-on experience with Linux RHEL system administration in enterprise environments.
• Deep understanding of system configuration and hardening.
• Knowledge of networking fundamentals including DNS, DHCP, routing, and firewalls.
• Experience with storage management such as LVM, NFS, and iSCSI.
• Proficiency with 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 such as VMware or KVM.
• Strong troubleshooting and analytical skills.
• Experience with cloud platforms such as AWS, Azure, or GCP.

Preferred

• Knowledge of Infrastructure as Code tools such as Terraform.
• Exposure to CI/CD pipelines and tools including Jenkins, GitLab CI, or GitHub Actions.
• Familiarity with configuration management tools such as Ansible, Puppet, or Chef.
• Understanding of containerization (Docker) and orchestration including Kubernetes or OpenShift.
• Experience with monitoring tools such as Prometheus, Grafana, Nagios, or Zabbix.
• Bachelor's degree in Computer Science, Information Technology, or related field.
• Red Hat certifications such as RHCSA or RHCE.
• Cloud certifications from AWS, Azure, or GCP.
• 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.