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Manage and maintain large-scale Linux server infrastructure (physical, virtual, and cloud).
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Plan and execute OS upgrades, patching, and kernel updates with minimal downtime.
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Perform capacity planning, performance tuning, and system optimization.
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Design and implement automated scripts and Ansible playbooks for configuration management and deployments.
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Configure and secure services such as Apache, Nginx, MySQL/PostgreSQL, Tomcat, JBoss, WebLogic, FTP, NFS, and Samba.
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Troubleshoot complex system, network, and application issues across multiple environments.
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Set up and manage firewall rules, SELinux, auditing, and system hardening measures.
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Monitor and manage logs, system health, and alerts using tools like Zabbix, Prometheus, Grafana, or Nagios.
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Manage centralized backup systems, disaster recovery plans, and storage (LVM, RAID, SAN/NAS).
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Participate in incident, change, and problem management processes.
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Support DevOps processes and CI/CD pipeline integrations.