Senior Infrastructure & Network Engineer

MSI GLOBAL PRIVATE LIMITED; Singapore; Presencial; SGD 70.000 - 100.000; Jornada completa

Descripción de la vacante

MSI GLOBAL PRIVATE LIMITED in Singapore seeks an experienced Microsoft Infrastructure & Identity Administrator to manage Windows Server, AD, and 365 services across production environments.

You will handle network, virtualization, storage, backup, security, and incident management while developing automation scripts to improve operations. The role requires strong collaboration with partners and a focus on reliability.

Formación

• Diploma or Degree in IT or related field.
• Minimum 5 years of hands-on Microsoft infrastructure and network operations.
• Experience supporting production environments and resolving complex infrastructure issues.
• Strong expertise in Windows Server, Active Directory, and related services.

Responsabilidades

• Administer, maintain, and support Microsoft infrastructure and identity services.
• Manage and secure AD, Entra ID, Office 365 apps, and device management.
• Oversee network, virtualization, storage, backup, and disaster recovery readiness.
• Perform patching, security hardening, and vulnerability remediation.
• Handle incident management, root-cause analysis, and vendor escalations.
• Develop automation scripts (PowerShell, Python) to streamline admin tasks.
• Maintain architecture diagrams, SOPs, and asset inventories.

Conocimientos

Windows Server Administration

Active Directory & Group Policy

DNS & DHCP

Microsoft Entra ID

Entra Connect

Microsoft 365 Administration

Intune

Exchange Online

Teams / SharePoint Online / OneDrive

WSUS / Patch Management

Hyper-V

PowerShell Scripting

Network Operations (LAN/WAN, TCP/IP)

Firewall & VPN Technologies

IT Security & Compliance

Educación

Diploma or Degree in Information Technology, Computer Science, Computer Engineering, Information Systems, or a related discipline

Herramientas

VMware ESXi

vCenter

Hyper-V

PowerShell

Descripción del empleo

Job Description

Microsoft Infrastructure & Identity Administration

Administer, maintain, and support Microsoft infrastructure including Windows Server, Active Directory, Group Policy, DNS, DHCP, DFS, Microsoft Entra ID, Microsoft Entra Connect, Microsoft Intune, Microsoft 365, WSUS, Remote Desktop Services (RDS), and Hyper-V.

Manage user and device identities, authentication, access controls, security groups, and permissions across Active Directory and Microsoft Entra ID.

Administer Microsoft 365 services including Exchange Online, Microsoft Teams, SharePoint Online, and OneDrive.

Support endpoint management, device compliance, application deployment, Windows patching, and asset administration through Microsoft Intune.

Maintain security and operational configurations through Group Policy and endpoint management tools.

Network Administration

Manage and support enterprise network infrastructure, including LAN, WAN, Wi‑Fi, VLAN, TCP/IP, routing, switching, VPNs, firewalls, and network access controls.

Configure, monitor, troubleshoot, and optimize network connectivity, availability, performance, and security.

Maintain network documentation, IP addressing schemes, and configuration records.

Work closely with telecommunications providers, security vendors, and service partners to resolve incidents and implement infrastructure enhancements.

Virtualization, Server & Storage Management

Administer and support VMware ESXi, vCenter, Hyper‑V, and hyperconverged infrastructure (HCI) environments.

Manage Windows and Linux servers, including provisioning, patching, monitoring, performance tuning, and troubleshooting.

Support enterprise storage systems, SAN environments, capacity planning, performance monitoring, and storage expansion activities.

Monitor infrastructure resources and proactively address capacity and performance issues.

Backup, Recovery & Business Continuity

Administer enterprise backup and recovery solutions, including backup monitoring, restoration, and recovery testing.

Perform periodic recovery exercises to validate business continuity and disaster recovery readiness.

Maintain backup policies, retention schedules, and recovery documentation.

Security, Patching & Vulnerability Management

Perform infrastructure patching and maintain compliance across servers, endpoints, and network devices.

Support vulnerability remediation activities arising from security assessments, penetration testing, and audits.

Implement security hardening measures and maintain infrastructure security baselines.

Review privileged access and ensure secure administration practices are followed.

Incident Management & Operations Support

Monitor infrastructure health, availability, utilization, and performance.

Troubleshoot and resolve Level 2/Level 3 incidents across Microsoft platforms, servers, virtualization, storage, and network environments.

Conduct root cause analysis and implement preventive measures for recurring incidents.

Manage vendor escalations and maintain operational documentation, including incident and change records.

Infrastructure Projects & Automation

Participate in infrastructure implementation, migration, upgrade, modernization, and refresh projects.

Develop and maintain automation scripts using PowerShell, Python, or similar technologies.

Automate infrastructure administration, user provisioning, monitoring, patching, and reporting processes.

Maintain architecture diagrams, network documentation, SOPs, configuration records, and asset inventories.

Evaluate emerging technologies and recommend infrastructure improvements.

Requirements

Education & Experience

Diploma or Degree in Information Technology, Computer Science, Computer Engineering, Information Systems, or a related discipline.

Minimum 5 years of hands‑on experience in Microsoft infrastructure, systems administration, and network operations.

Strong experience supporting production environments and resolving complex infrastructure issues.

Proven expertise in Windows Server and Active Directory administration.

Technical Skills:

Microsoft Infrastructure

Strong hands‑on experience with:

• Windows Server Administration
• Active Directory & Group Policy
• DNS, DHCP, and Domain Services
• Microsoft Entra ID & Entra Connect
• Microsoft 365 Administration
• Microsoft Intune
• Exchange Online
• Microsoft Teams
• SharePoint Online & OneDrive
• WSUS & Windows Patch Management
• Hyper‑V
• PowerShell Scripting

Networking

Good working knowledge of:

• TCP/IP, Subnetting, VLANs
• LAN/WAN Technologies
• Routing & Switching
• Firewall Administration
• VPN Technologies
• Wireless Network Infrastructure
• Network Monitoring & Troubleshooting

Experience with Cisco, Aruba, Fortinet, or equivalent enterprise networking platforms will be advantageous.

Virtualization, Storage & Backup

Hands‑on experience with VMware ESXi, vCenter, and/or Microsoft Hyper‑V.

Experience with enterprise storage and SAN environments.

Familiarity with HCI and Software-