Hybrid IT Infrastructure Engineer: Cloud & Security

Cornerstone Global Partners Pte Ltd; Singapore; Hybrid; SGD 90,000 - 150,000; Full time

Job summary

Cornerstone Global Partners Pte Ltd is seeking an hands-on Infrastructure Engineer to maintain a secure, resilient enterprise tech environment across a hybrid, multi-region setup. You will manage Windows Server, Linux, virtualization, and cloud platforms, while coordinating with security, applications, and vendors to ensure audit-ready systems.

Responsibilities include AD/Entra ID, DNS/DHCP, Azure/AWS management, and automation using PowerShell, Bash, or Python.

Qualifications

• 5+ years in system administration or infrastructure operations
• Hands-on Windows Server, Linux, virtualization, and cloud experience
• Solid knowledge of Active Directory, Entra ID, DNS, DHCP, and TCP/IP
• Scripting proficiency in PowerShell, Bash, or Python
• Experience with ITIL-aligned incident, change, and problem management
• Bachelor’s degree in IT, Computer Science, or Engineering (or equivalent)

Responsibilities

• Administer Windows Server, Linux, VMware, and Hyper-V across physical, virtual, and cloud platforms
• Manage Active Directory, Entra ID, DNS, and DHCP
• Own Azure and AWS services, including access controls and cost governance
• Drive security hardening and vulnerability remediation with cybersecurity teams
• Administer enterprise backup and restore and validate DR readiness
• Troubleshoot issues, perform root-cause analysis, and participate in on-call incidents
• Automate recurring tasks with PowerShell, Bash, or Python
• Manage vendors and MSPs against service outcomes

Skills

Windows Server

Linux

Virtualization

Azure / AWS

Active Directory / Entra ID

DNS / DHCP / TCP/IP

Scripting (PowerShell / Bash / Python)

ITIL processes

Education

Bachelor's degree in IT / CS / Engineering

Tools

Azure

AWS

VMware

Hyper-V

Active Directory

Job description

Cornerstone Global Partners Pte Ltd is seeking an hands-on Infrastructure Engineer to maintain a secure, resilient enterprise tech environment across a hybrid, multi-region setup. You will manage Windows Server, Linux, virtualization, and cloud platforms, while coordinating with security, applications, and vendors to ensure audit-ready systems.

Responsibilities include AD/Entra ID, DNS/DHCP, Azure/AWS management, and automation using PowerShell, Bash, or Python.