UNIX Administrator (L3)- 6 months Contract

6 months Contract Good to have banking exposure Role Overview Hands-on UNIX L3 Administrator with strong expertise in IBM AIX, Linux infrastructure administration, complex troubleshooting, server migrations, automation, virtualization, and high-availability environments. The candidate must be a technically strong, independent L3 engineer, capable of managing critical production incidents, executing complex UNIX migrations end-to-end, troubleshooting infrastructure failures, and driving automation and reliability improvements with minimal supervision. Key Responsibilities • Provide L3 support for enterprise UNIX platforms, including IBM AIX and Red Hat Enterprise Linux (RHEL). • Perform UNIX server migrations, OS upgrades, hardware refresh, data center migrations, and technology modernization. • Administer IBM PowerVM, LPAR, VIOS, HMC, NPIV, and SEA. • Manage AIX Live Partition Mobility (LPM), NIM, mksysb, alt_disk_copy, and system recovery. • Configure and troubleshoot PowerHA, clustering, failover, and disaster recovery. • Manage SAN storage, LVM, JFS2, XFS, NFS, multipathing, and file system migrations. • Perform advanced troubleshooting, performance tuning, capacity management, and root-cause analysis. • Develop automation scripts using Shell, KSH, Bash, Python, and Ansible. • Handle OS patching, vulnerability remediation, security hardening, and production change management. • Prepare migration runbooks, rollback plans, technical documentation, and post-migration validation. Mandatory Technical Skills • Strong hands-on experience in IBM AIX / UNIX L3 administration. • Hands-on UNIX migration experience, advanced troubleshooting, and strong AIX/PowerVM technical expertise are mandatory. • Proven experience in UNIX server migration, OS upgrades, and technology refresh. • Advanced knowledge of PowerVM, VIOS, LPAR, HMC, NIM, and PowerHA. • Strong understanding of SAN, LVM, storage migration, clustering, and disaster recovery. • Proficiency in troubleshooting tools: nmon, topas, vmstat, iostat, sar, errpt, and tcpdump. • Strong scripting capabilities in Shell/Bash/KSH, Python, and Ansible. • Experience with ServiceNow, Splunk, Dynatrace, Nagios, IBM Storage Protect, or Veritas NetBackup. • Strong knowledge of ITIL incident, problem, and change management. Preferred Skills • IBM Power hardware migration (POWER8/9/10). • Red Hat Enterprise Linux administration and Veritas Cluster Server. • Experience with Git, Jenkins, Terraform, and enterprise automation. • Prior experience supporting mission-critical banking infrastructure