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 Sanderson-ikas Full time

    **Windows Administrator** **Key Competencies to be successful for the role**: - **Trustworthy - **To display honesty and integrity, to do the right thing even though no one notices. - **Takes ownership - **Takes full ownership and responsibility of his/her work - **Diplomatic - **Communicates and Resolves issues with colleagues/clients in diplomatic...


  • Singapore USER EXPERIENCE RESEARCHERS 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 disaster...


  • Singapore BANKING COMPUTER SERVICES PRIVATE LIMITED Full time

    The IT Infrastructure Department under Technology ensures the resilience, security, and high-performance of BCS’ technology infrastructure across various functions of service monitoring, incident management, and technical support. The team ensures seamless operation, maintenance, and strategic growth of core infrastructure components, including networks,...


  • Singapore Banking Computer Services Pte Ltd Full time

    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 resilience,...


  • Singapore Banking Computer Services Private Limited Full time $90,000 - $120,000 per year

    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 resilience, security,...


  • Singapore Singtel Group Full time

    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...


  • Singapore Wipro Limited Full time

    Singapore, Singapore - Tech Hiring - 3059487 **Job Description**: - Responsible for day-to-day administration duties including Windows Active Directory object maintenance. - Conducts complex troubleshooting and resolving issues on Active Directory, Exchange infrastructure, Microsoft PKI and Federation services. - Expert in Azure administration, ability to...


  • Singapore ARYAN SOLUTIONS PTE. LTD. Full time

    Bachelor's degree in a relevant field. - At least 3 to 5 years of experience in administering Windows-based systems and infrastructure. - Proficiency in Windows Server operating systems (2019). - Strong understanding of Active Directory, Group Policy, DNS, and DHCP. - Experience with virtualization platforms such as VMware and Hyper-V. - Knowledge of...


  • Singapore TANGSPAC CONSULTING PTE LTD Full time

    Job Description & Requirements Windows VM Infrastructure (80%)Manage and operate Windows-based virtual machines Perform installation, configuration, hardening, maintenance, and patching Ensure system security and compliance with organizational standards Troubleshoot system issues and perform performance tuning Conduct capacity planning and proactive system...


  • Singapore Wipro Limited Full time

    Singapore, Singapore - Tech Hiring - 3072865 **Job Description**: **Job Description (Windows Server Administrator L1)**Knowledge of Windows 2003/2008/2012 Servers (Must Have) - Server installation, configuration(Must Have) - Active Directory Management (OU/GPO/Forest and domain config and etc) (Must Have)- - Hyper-V / Vmware - Deployment and management of...