Linux Administrator

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.

• 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
  .

• 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
  .

• 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.