Senior Linux Administrator

Job Title Senior Core Linux Administrator Experience 78 Years Job Summary We are seeking an experienced Core Linux Administrator with 78 years of hands-on experience in managing, supporting, and maintaining large-scale Linux environments. The role involves ensuring high availability, performance, security, and stability of mission-critical Linux systems in 24x7 production environments. Key Responsibilities Administer, monitor, and support Linux servers (RHEL, CentOS, Oracle Linux, Ubuntu) in production and non-production environments Perform OS installation, configuration, hardening, and patching Handle L2/L3 incident management, problem management, and root cause analysis Monitor system performance, capacity planning, and tuning (CPU, memory, disk, I/O) Manage user accounts, groups, sudo access, PAM, and security policies Configure and troubleshoot network services (DNS, NTP, SSH, FTP, SMTP) Implement and manage filesystem and storage (LVM, multipath, NFS, SAN) Perform backup and reco...