Senior Unix System Administrator

• Resolve advanced UNIX infrastructure and operating system issues for enterprise customers
• Troubleshoot complex storage, networking, performance, boot, and clustering problems
• Support production environments running AIX, HP-UX, and Solaris
• Implement solutions remotely and occasionally on-site
• Participate in a low-frequency on-call rotation for critical customer escalations
• Maintain and expand internal UNIX lab environments for testing and validation
• Share technical expertise through quarterly webinars and knowledge sharing
• Continuously learn and develop expertise across supported UNIX platforms

• Commercial UNIX Experience
• Candidates must have strong hands-on production experience with at least two of the following platforms: IBM AIX, HP-UX, Oracle Solaris
• Experience supporting all three platforms is highly preferred.
• Qualified candidates should demonstrate experience with many of the following:
• - Enterprise UNIX administration and troubleshooting
• - Logical Volume Manager (LVM)
• - File system administration (JFS/JFS2, ZFS, VxVM, SVM)
• - High Availability clustering (PowerHA/HACMP, Serviceguard)
• - Shell scripting (ksh, sh, bash)
• - Performance tuning and diagnostics
• - Enterprise storage (SAN, Fibre Channel, multipathing)
• - NFS and SMB/CIFS administration
• - TCP/IP networking and troubleshooting
• - LDAP, Active Directory integration, PAM, and Kerberos
• - Patch management and security hardening
• - Operating system installation, upgrades, and disaster recovery
• - Boot process troubleshooting across enterprise UNIX platforms

Demonstrates extensive expertise in Enterprise UNIX administration, troubleshooting, and support across IBM AIX, HP-UX, and Oracle Solaris platforms. Proficient in performance tuning, disaster recovery, and maintaining high availability in production environments.