Windows Infrastructure Engineer

RAPSYS TECHNOLOGIES PTE LTD; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

RAPSYS TECHNOLOGIES PTE LTD in Singapore is seeking a Windows Infrastructure Engineer with 4+ years of experience to design, implement and maintain Windows environments, ensuring reliability and security to support business operations.

You will drive automation with PowerShell, manage Active Directory, and collaborate with global IT teams to optimize capacity, perform troubleshooting and uphold governance standards.

Qualifications

• Experience in Windows Server environments and Active Directory administration.
• Proficiency in PowerShell scripting and automation development.
• Experience with AI-assisted tooling in infrastructure operations is a plus.
• Strong troubleshooting skills and ability to collaborate across teams.

Responsibilities

• Design, implement and manage Windows infrastructure to meet availability, continuity, security and capacity requirements.
• Translate business requirements into Windows infrastructure solutions.
• Provision, configure and maintain Windows virtual machines and services.
• Support architecture reviews, planning, testing and readiness.
• Perform capacity planning, maintenance, monitoring and troubleshooting.
• Act as primary Windows infrastructure technical contact for new initiatives.
• Work with application teams, infrastructure teams and service providers on issues.

Skills

Windows Server

Active Directory

PowerShell

Automation

AI tools in infra

AIOps

Troubleshooting

Collaboration

Job description

We are looking for a talented and driven Windows Infrastructure Engineer to join our team in Singapore. The ideal candidate will have at least 4 years of experience managing, optimizing, and securing Windows environments. You’ll play a key role in maintaining our infrastructure, ensuring reliability, and supporting business operations.

Key Responsibilities:

• Design, implement and manage Windows infrastructure to meet availability, continuity, security and capacity requirements.
• Translate business and application requirements into appropriate Windows infrastructure solutions.
• Provision, configure and maintain Windows virtual machines and supporting services.
• Support infrastructure architecture reviews, implementation planning, testing and operational readiness.
• Perform capacity planning, lifecycle management, maintenance, performance monitoring and troubleshooting.
• Act as the primary Windows infrastructure technical point of contact for new application and infrastructure initiatives.
• Work closely with application teams, infrastructure teams and service providers to resolve technical issues and support production operations.

AI & Technical Automation

• Drive Windows infrastructure operations and day-to-day task efficiencies through technical automation, with a focus on reducing repetitive manual activities and improving operational consistency.
• Design, develop, test and maintain PowerShell scripts and automation runbooks for Windows infrastructure administration and operations.
• Automate operational activities such as server provisioning and configuration, Active Directory administration, configuration and hardening checks, health checks, log collection, troubleshooting, reporting and remediation.
• Experience in deploying and working with AI tools applied to Windows infrastructure operations, including AI-assisted scripting and troubleshooting, log and event analysis, anomaly detection and operational automation.
• Use AI-assisted development tools to accelerate the development, testing and documentation of scripts and automation, while ensuring outputs are technically validated before production use.
• Identify suitable operational use cases and progressively convert manual procedures into controlled, repeatable and supportable automation runbooks.
• Develop automation with appropriate validation, logging, exception handling, security controls and rollback considerations.
• Maintain automation scripts and configuration artefacts using appropriate version-control and change-management practices.
• Continuously identify opportunities where AI and automation can improve infrastructure reliability, troubleshooting effectiveness and operational efficiency.

Microsoft Active Directory & Windows Platform

Strong hands-on knowledge and experience are required in:

• Microsoft Active Directory administration and troubleshooting.
• Active Directory backup and recovery.
• Group Policy creation, implementation and troubleshooting.
• Active Directory migration and upgrade planning.
• Windows authentication and authorisation mechanisms.
• Active Directory Sites and Services design and configuration.
• GCC Active Directory and Remote Desktop Services integration.
• Windows Server roles and features including DNS, DHCP and Certificate Services.
• Windows clustering and high-availability configurations.
• PowerShell scripting and automation.
• Windows security hardening and configuration management.
• Troubleshooting complex Windows Server and Active Directory issues.

Security, Governance & Operational Readiness

• Ensure Windows infrastructure solutions comply with the Authority's Technical Architecture, SG-TRM, IM8 and applicable Authority IT policies.
• Ensure automation is appropriately tested, documented and implemented through established change-management processes.
• Maintain technical documentation, operational procedures and automation runbooks.
• Support operational readiness and knowledge transfer to operations teams and service providers.
• Ensure Windows infrastructure configurations remain secure, controlled and supportable throughout their lifecycle.

Desired Skills and Experience

• Strong hands-on experience in Windows Server and Microsoft Active Directory engineering.
• Strong PowerShell scripting and technical automation capabilities.
• Demonstrated experience automating Windows infrastructure administration and operational activities.
• Practical experience using AI tools in infrastructure operations, including AI-assisted troubleshooting, scripting, analysis or anomaly detection.
• Experience with AIOps, infrastructure automation or configuration automation platforms would be advantageous.
• Ability to identify manual operational processes and translate them into reliable and maintainable automation.
• Strong infrastructure troubleshooting and root-cause-analysis skills.
• Experience supporting infrastructure with high availability, security and governance requirements.
• Ability to work effectively with internal teams and external service providers.