Provide L3 technical support for P1–P4 incidents and complex OS-level issues
Lead and technically guide L1/L2 Unix/Linux operations teams across global regions
Administer and troubleshoot RHEL, Ubuntu, AIX and Solaris environments
Own OS patching, patch compliance and vulnerability remediation
Perform CIS hardening and security baseline remediation
Manage OS performance and capacity, including filesystem, CPU, memory and I/O issues

🎯 Requirements

8–12+ years of experience in enterprise Unix/Linux infrastructure and production operations
Strong hands-on experience in Unix/Linux system administration
Expert knowledge of one or more of: RHEL, Ubuntu, AIX, Solaris
Strong troubleshooting skills across OS, filesystem, process, performance and system services
Experience with OS patching, vulnerability remediation and CIS hardening
Strong knowledge of LVM, NFS, SSH, DNS, filesystem management, package management and cron

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