Senior Windows Administrator

1 day ago


Singapore NCS Full time $100,000 - $150,000 per year
Senior Windows Administrator

Date: 24 Sept 2025

Location: Singapore, Singapore

Company: Singtel Group

We are seeking a highly skilled and experienced Hybrid IT Engineer to manage, maintain, and optimize our Windows-based infrastructure and associated technologies within our hybrid IT environment. The ideal candidate will be responsible for ensuring the health, performance, and security of Windows servers and systems while collaborating with cross-functional teams to implement and support enterprise-wide solutions.

Key Responsibilities:

  • Implement and manage Windows-based infrastructure and associated technologies.
  • Monitor and maintain the health, performance, and security of Windows servers and systems.
  • Administer Active Directory, Group Policy, DNS, DHCP, and related services.
  • Configure and troubleshoot Hypervisor Nutanix virtualization platforms (e.g., VMware, Hyper-V).
  • Install, configure, and manage Windows servers and services, including IIS, SQL Server, Exchange 2019 and Skype 2019
  • Collaborate with cross-functional teams to implement and support enterprise-wide solutions.
  • Perform routine system and application updates, patches, and upgrades.
  • Develop and maintain documentation related to system configurations, processes, and procedures.
  • Provide level 2 and level 3 support for Windows-related issues.
  • Participate in on-call rotation for after-hours support as needed.

Qualifications:

  • Experience in administering Windows-based systems and infrastructure.
  • Proficiency in Windows Server operating systems
  • Strong understanding of Active Directory, Group Policy, DNS, and DHCP.
  • Experience with virtualization platforms such as VMware and Hyper-V.
  • Knowledge of scripting languages (e.g., PowerShell) for automation and scripting tasks.
  • Familiarity with monitoring tools and systems management solutions.
  • Excellent problem-solving and troubleshooting skills.
  • Strong communication and interpersonal abilities.
  • Certifications such as MCSE, MCSA, or equivalent are a plus.


  • Singapore Hamilton Barnes ? Full time

    Direct message the job poster from Hamilton Barnes Network & Telco Specialist | Strategic Partner to Telcos, Integrators, DC Providers, MSPs & Enterprises | Enabling Project Delivery Across APAC We are seeking an experienced Senior Windows Administrator to take ownership of a critical operational role, supporting a major customer's offline network. This...


  • Singapore ALMR CONSULTING PTE. LTD. Full time

    Overview We are looking for an experienced Windows Administrator to manage and optimise our Windows Server infrastructure and cloud services. The role involves administration of Active Directory, security, backup, virtual desktop solutions, and AWS resources, ensuring high availability and compliance with enterprise standards. Key Responsibilities ...


  • Singapore NETS Group Full time

    Overview The Technology Division at BCS is responsible for the operations, maintenance, and support of BCS applications such as FAST, Giro, CTS, PayNow, SGQR, TFR, eGIRO and its critical infrastructure, ensuring its operational stability, regulatory compliance, and service reliability. The IT Infrastructure Department under Technology ensures the...

  • Windows Administrator

    3 weeks ago


    Singapore INNOVATIQ TECHNOLOGIES PTE. LTD. Full time

    Roles & ResponsibilitiesKey responsibilities:Manage and maintain Windows Server infrastructure, including Active Directory, DNS, DHCP, and file services Administer and troubleshoot Active Directory services, including user management, security groups, and Group Policy Deploy and manage virtual desktop solutions across the organisation Implement and...


  • Singapore INFINITE COMPUTER SOLUTIONS PTE LTD Full time

    Key responsibilities: • Manage and maintain Windows Server infrastructure, including Active Directory, DNS, DHCP, and file services • Administer and troubleshoot Active Directory services, including user management, security groups, and Group Policy • Deploy and manage virtual desktop solutions across the organisation • Implement and maintain...


  • Singapore INFINITE COMPUTER SOLUTIONS PTE LTD Full time

    Key responsibilities: Manage and maintain Windows Server infrastructure, including Active Directory, DNS, DHCP, and file services Administer and troubleshoot Active Directory services, including user management, security groups, and Group Policy Deploy and manage virtual desktop solutions across the organisation Implement and maintain backup and...


  • Singapore ALPSOFT TECHNOLOGIES PTE. LTD. Full time

    3months contract converted to perm. Looking for Immediate starter. Windows Server Administrator (Junior - Mid-level) **Job Description**: - Perform administrative activities of Windows server operating system, - Having good knowledge of Windows Services, Windows Schedulers, Internet Information Services, etc, - Assist in the implementation of the...


  • Singapore SINGAPORE BUSINESS GUIDE PTE. LTD. Full time

    We are currently seeking a Junior to Mid-level Windows Server Administrator to join our team. If you have a strong understanding of Windows server operating systems and are experienced in handling administrative activities, this could be an exciting opportunity for you. Position: Windows Server Administrator (Junior - Mid-level) Salary Range: S$4,000 to...


  • Singapore BETTER BUSINESS ASIA SDN BHD Full time

    We are currently seeking a Junior to Mid-level Windows Server Administrator to join our team. If you have a strong understanding of Windows server operating systems and are experienced in handling administrative activities, this could be an exciting opportunity for you. Position: Windows Server Administrator (Junior - Mid-level) Salary Range: S$4,000 to...


  • Singapore beBeeInfrastructure Full time $120,000 - $150,000

    Job SummaryThe Senior IT Infrastructure Engineer will manage and maintain the hybrid IT environment with a focus on Windows-based infrastructure.Maintain and implement Windows-based systems and associated technologies.Monitor performance, security, and health of Windows servers.Administer Active Directory, DNS, DHCP, and related services.Configure Hypervisor...