Sr Subject Matter Expert (Support&Ops)

Position: Unix L2/L3 Support Engineer (Linux, Solaris & AIX) Experience: L2 : 6+ Years, L3 10+ Years

24x7 Shift Support

Singapore

We are seeking an experienced

with strong expertise in

to provide 24x7 operational support for enterprise datacenter and cloud environments. The role involves incident management, problem determination, system administration, automation, infrastructure support, performance optimization, patch management, and ensuring high availability of critical business services. The candidate should possess strong troubleshooting skills across Unix platforms, cloud technologies, automation tools, clustering solutions, and infrastructure management frameworks.

Unix/Linux/Solaris/AIX Administration Provide L2 administration and operational support for Linux, Solaris, and AIX servers across Data Center and Cloud environments. Perform installation, configuration, administration, patching, upgrades, migration, and lifecycle management of Unix/Linux platforms. Manage virtualization technologies including: Solaris Zones and LDOMs AIX LPARs and VIOS Perform OS hardening, capacity management, performance tuning, and system optimization. Troubleshoot server, operating system, hardware, storage, and application-related issues. Handle break-fix activities and service restoration within agreed SLAs. Create and maintain environments for batch processing and associated reporting systems. Infrastructure & Platform Management Manage Red Hat Satellite for patching, provisioning, and lifecycle management. Administer Centrify, IBM GPFS, Puppet, and Ansible environments. Support Docker and Kubernetes platforms. Manage AWS and Azure virtual machine deployments and administration. Support storage integration, clustering, partitioning, and virtualization technologies. Provide support for HA and Cluster technologies. Automation & DevOps Hands-on experience in

for infrastructure provisioning, configuration management, and automation. Strong scripting skills using

to automate operational and administrative tasks. Develop, maintain, and enhance automation workflows, reusable playbooks, and Infrastructure-as-Code (IaC) solutions. Drive continuous improvement initiatives to reduce manual effort and improve operational efficiency. Automate patching, monitoring, reporting, server provisioning, and compliance-related activities. Incident, Problem & Change Management Monitor infrastructure health and proactively address issues. Participate in incident, problem, and change management processes. Perform root cause analysis (RCA) and provide corrective and preventive actions. Collaborate with application, network, cloud, storage, and security teams during major incidents. Support system integration and production rollout activities. 24x7 Operational Support Provide

to ensure service availability and business continuity. Participate in

, on-call rotations, weekend support, and major incident management. Ensure compliance with SLA, OLA, and operational standards. Support planned maintenance activities and emergency changes whenever required.

Red Hat Enterprise Linux (RHEL) Sun Solaris IBM AIX

Solaris LDOMs AIX LPARs AIX VIOS GPFS Centrify Configuration Management & Automation Ansible Terraform Puppet Shell Scripting Python Infrastructure as Code (IaC)

Strong customer focus and stakeholder management skills. Ability to work independently in a 24x7 support environment. Experience in large enterprise infrastructure operations. Knowledge of ITIL processes and service management practices. Continuous improvement mindset with focus on automation and operational excellence.