UNIX Administrator (L3)- 6 months Contract

ICON OUTSOURCING; Singapore; On-site; SGD 100,000 - 167,000; Full time

Job summary

ICON OUTSOURCING is seeking a hands-on UNIX L3 Administrator with IBM AIX, Linux infra, and high-availability expertise for a 6-month contract. You will manage critical production incidents, perform complex UNIX migrations, and drive automation with minimal supervision.

The role requires strong troubleshooting, PowerVM/LPAR/VIOS/HMC experience, data center migrations, and experience in patching, DR, and automation using Python/Ansible.

Qualifications

• Hands-on UNIX L3 administration with IBM AIX and UNIX migration experience.
• Strong troubleshooting skills and ability to manage complex production incidents.
• Experience with OS upgrades, technology refresh, and high-availability environments.

Responsibilities

• Provide L3 support for UNIX platforms including IBM AIX and RHEL.
• Perform UNIX server migrations, OS upgrades, hardware refresh, and data center moves.
• Administer PowerVM, VIOS, LPAR, HMC, NPIV, and SEA.
• Manage LPM, NIM, mksysb, and alt_disk_copy; ensure proper system recovery.

Skills

UNIX L3 administration

IBM AIX

PowerVM

Automation scripting

Shell/Bash

Tools

nmon

topas

vmstat

iostat

sar

errpt

tcpdump

Python

Ansible

Job description

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