Linux Administrator L3

Job Title : Linux Administrator with Windows Admin (L3 Support)

Key Responsibilities :

• Provide L3-level support and administration for Linux servers (RHEL, CentOS, Ubuntu).
• Deploy, configure, and manage web hosting platforms (Apache, NGINX, Tomcat).
• Administer Linux systems running on VMware environments (vSphere, ESXi, vCenter).
• Work with cloud and DevOps teams to implement and support autoscaling on AWS, Azure, or GCP.
• Manage certificate servers, including CSR generation, SSL / TLS configuration, and certificate lifecycle renewals (OpenSSL, Let’s Encrypt).
• Set up and maintain backup tools and disaster recovery processes (rsync, Bacula, Veeam, Acronis, etc.).
• Troubleshoot OS-level and infrastructure-level incidents.
• Manage core Linux services (DNS, DHCP, FTP, SSH, NFS) and schedule jobs with cron.
• Write and maintain Bash scripts to automate tasks and improve system operations.
• Monitor system health, disk usage, and performance using tools like Zabbix, Prometheus, Grafana, or Nagios.
• Handle user and permission management, implement security measures (firewalls, SELinux, audit logs).
• Document systems, operational procedures, and perform routine patching / hardening.
• Support high-availability configurations, load balancing, and scaling for hosted websites and services.

Required Skills and Qualifications :

Preferred Qualifications :