Sr Subject Matter Expert (Support&Ops)

Sapsf; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

Sapsf is seeking an L3 Enterprise Windows infrastructure support engineer in Singapore to provide 24x7 service across Windows Server, VMware, and Nutanix platforms. The role includes incident handling, RCA, DR planning, and runbook maintenance.

The candidate will manage AD/Entra ID responsibilities, patching, compliance audits, and automation workflows using PowerShell, Ansible, Terraform, and Python. On-call and shift rotation are involved.

Qualifications

• Experience in incident, problem and change management.
• RCA and KEDB management experience.
• Patching and vulnerability remediation experience.
• Lifecycle management and EOL/EOS tracking.
• Capacity and performance management.
• DR planning and execution.
• OEM coordination and documentation management.

Responsibilities

• Incident, Problem and Change Management.
• RCA and KEDB Management.
• Patching and Vulnerability Remediation.
• Lifecycle Management and EOL/EOS Tracking.
• Capacity and Performance Management.
• DR Planning and Execution.
• OEM Coordination.
• Documentation, SOP and Runbook Maintenance.

Skills

Incident management

Problem management

Change management

Documentation

Runbook maintenance

Tools

Windows Server

Active Directory

DNS

DHCP

DFS

GPO

ADFS

RDS

VMware ESXi

vCenter

Nutanix Prism

Nutanix AHV

Nutanix CVM

Ansible

Terraform

PowerShell

Python

Job description

Requisition ID144670-Posted08/25/2026

Provide L3 support for enterprise Windows infrastructure, VMware, Nutanix, Active Directory and Hybrid Identity services in a 24x7 managed services environment.

Support Coverage

24x7 operational support, shift rotation, on-call support, major incident management, SLA compliance and DR activities.

Key Responsibilities

Operational Responsibilities

• Incident, Problem and Change Management
• RCA and KEDB Management
• Patching and Vulnerability Remediation
• Lifecycle Management and EOL/EOS Tracking
• Capacity and Performance Management
• DR Planning and Execution
• OEM Coordination
• Documentation, SOP and Runbook Maintenance

Skill Requirements

Technical Requirements

• Windows Server 2016/2019/2022 Administration
• Active Directory, DNS, DHCP, DFS, GPO, ADFS, KMS, RDS
• VMware ESXi, vCenter, HA, DRS, vMotion
• Nutanix Prism, AHV, CVM, LCM
• AD Manager Plus and Quest Recovery Manager

AD and Entra ID Responsibilities

• Conditional Access Administration
• Identity Governance
• RBAC Administration
• Access Certification Reviews
• AD Recovery using Quest Recovery Manager
• Security and Compliance Audits
• Hybrid Identity Management
• Certificate Lifecycle Management

Automation Skills

• Ansible Automation Platform
• Terraform Infrastructure as Code
• PowerShell Automation
• Python Scripting
• Workflow Automation
• Reusable Playbooks and IaC Modules

Other Requirements

Preferred Certifications

• Microsoft Windows Server Hybrid Administrator
• Microsoft Identity and Access Administrator