Linux Administrator

InnovitUSA; Boise (ID); On-site; USD 90,000 - 120,000; Full time

Job summary

InnovitUSA in Boise, Idaho is seeking an experienced Linux Administrator to manage enterprise Linux servers, perform OS upgrades, patch management, hardening, and troubleshooting across RHEL, CentOS, Ubuntu, and SUSE.

You will configure essential services (SSH, DNS, DHCP, NFS, Apache, Nginx, Tomcat), manage storage and virtualization, develop automation with Ansible and Shell/Bash, and support disaster recovery and high availability.

Qualifications

• 4+ years hands-on Linux System Administration experience.
• Strong experience with RHEL / Red Hat Linux administration.
• Good knowledge of CentOS, Ubuntu, and/or SUSE Linux.
• Strong knowledge of Linux file systems, LVM, partitions, permissions, processes, and services.
• Experience with Shell/Bash scripting.
• Hands-on experience with Ansible.
• Strong understanding of DNS, DHCP, TCP/IP, SSH, NFS, and networking fundamentals.
• Experience with YUM/DNF/APT package management.
• Knowledge of SELinux, firewalld, systemd, cron, and log management.
• Experience with Linux patching, upgrades, hardening, and vulnerability remediation.
• Strong troubleshooting and root-cause-analysis skills.
• Experience supporting production environments and enterprise infrastructure.

Responsibilities

• Install, configure, administer, and maintain Linux servers across RHEL, CentOS, Ubuntu, and SUSE.
• Perform OS upgrades, patch management, vulnerability remediation, and system hardening.
• Manage Linux users, groups, permissions, sudo access, SSH, processes, and services.
• Manage file systems, partitions, LVM, disk utilization, NFS, and storage mounts.
• Monitor server availability, performance, capacity, CPU, memory, disk, and network utilization.
• Troubleshoot Linux OS, application, storage, networking, and authentication issues.
• Configure and manage services including SSH, DNS, DHCP, NFS, FTP, Apache, Nginx, and Tomcat.
• Develop and maintain Shell/Bash scripts to automate routine tasks.
• Use Ansible for configuration management, patching, provisioning, and automation.
• Support backup, restore, disaster recovery, and high-availability activities.

Skills

Linux Administration

RHEL / Red Hat

CentOS / Ubuntu

Ansible

Shell / Bash scripting

DNS / DHCP / TCP/IP

NFS / File systems

SSH / Security

YUM / DNF / APT

SLES / VMware / Cloud

Apache / Nginx / Tomcat

SELinux / Firewalld

Monitoring / RCA

Tools

VMware vSphere/ESXi

Docker

Kubernetes

Grafana / Prometheus

Nagios / Zabbix

Job description

We are looking for an experienced Linux Administrator to manage, maintain, secure, and troubleshoot enterprise Linux server environments. The ideal candidate should have strong hands-on experience with RHEL, CentOS, Ubuntu, system administration, patching, storage, networking, monitoring, security, and automation.

Key Responsibilities

• Install, configure, administer, and maintain Linux servers including RHEL, CentOS, Ubuntu, and SUSE.
• Perform OS upgrades, patch management, vulnerability remediation, and system hardening.
• Manage Linux users, groups, permissions, sudo access, SSH, processes, and services.
• Manage file systems, partitions, LVM, disk utilization, NFS, and storage mounts.
• Monitor server availability, performance, capacity, CPU, memory, disk, and network utilization.
• Troubleshoot Linux OS, application, storage, networking, and authentication issues.
• Configure and manage services including SSH, DNS, DHCP, NFS, FTP, Apache, Nginx, and Tomcat.
• Perform root cause analysis (RCA) for production incidents and resolve issues within defined SLAs.
• Manage package installation and updates using YUM, DNF, and APT.
• Develop and maintain Shell/Bash scripts to automate routine administrative tasks.
• Use Ansible for configuration management, patching, provisioning, and automation.
• Support backup, restore, disaster recovery, and high-availability activities.
• Configure and troubleshoot Linux networking, including TCP/IP, DNS, routing, firewalls, and connectivity.
• Implement security controls including SELinux, firewalld, SSH hardening, access controls, and vulnerability remediation.
• Work with monitoring and logging tools such as Nagios, Zabbix, Grafana, Prometheus, or similar platforms.
• Support Linux environments running on VMware, cloud platforms, and virtual infrastructure.
• Participate in incident, problem, change, and release management processes.
• Maintain SOPs, runbooks, configuration documentation, and technical procedures.

Required Skills

• 4+ years of hands-on Linux System Administration experience.
• Strong experience with RHEL / Red Hat Linux administration.
• Good knowledge of CentOS, Ubuntu, and/or SUSE Linux.
• Strong knowledge of Linux file systems, LVM, partitions, permissions, processes, and services.
• Experience with Shell/Bash scripting.
• Hands-on experience with Ansible.
• Strong understanding of DNS, DHCP, TCP/IP, SSH, NFS, and networking fundamentals.
• Experience with YUM/DNF/APT package management.
• Knowledge of SELinux, firewalld, systemd, cron, and log management.
• Experience with Linux patching, upgrades, hardening, and vulnerability remediation.
• Strong troubleshooting and root-cause-analysis skills.
• Experience supporting production environments and enterprise infrastructure.

Preferred Skills

• RHCSA / RHCE certification.
• Experience with VMware vSphere/ESXi.
• Experience with AWS, Azure, or GCP Linux workloads.
• Knowledge of Docker and Kubernetes.
• Experience with Apache, Nginx, Tomcat, or JBoss.
• Knowledge of Pacemaker/Corosync and Linux clustering.
• Experience with SAN/NAS, RAID, backup, and disaster recovery.
• Exposure to Terraform, Jenkins, Git, or CI/CD.
• ITIL/production support experience.