Windows ICT Infrastructure Engineer

Rapsys Technologies Pte Ltd.; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

Rapsys Technologies Pte Ltd. seeks a Windows ICT Infrastructure Engineer to manage and optimize enterprise Windows infrastructure. You will drive automation, PowerShell scripting and AI-assisted operational improvements while ensuring security, availability and performance across the environment.

The role requires hands-on Windows Server and Active Directory expertise, strong troubleshooting, and collaboration with cross-functional teams and service providers to support production operations.

Qualifications

• Hands-on Windows Server and Active Directory engineering.
• Strong PowerShell scripting and automation capabilities.
• Experience automating Windows infrastructure administration and operations.
• Practical experience using AI tools in infrastructure operations.

Responsibilities

• Design, implement and manage Windows infrastructure to meet availability, continuity, security and capacity requirements.
• Translate business and application requirements into Windows infrastructure solutions.
• Provision, configure and maintain Windows VMs and supporting services.
• Support architecture reviews, planning, testing and operational readiness.
• Capacity planning, lifecycle management, maintenance, performance monitoring and troubleshooting.
• Act as primary Windows infra technical contact for new initiatives.
• Collaborate with application, infra teams and service providers to resolve issues.

Skills

Windows Server

Active Directory

PowerShell scripting

Automation

AI tools in infra

Troubleshooting

Security governance

Collaboration

Job description

We're Hiring: Windows ICT Infrastructure Engineer!

We are seeking a skilled Windows ICT Infrastructure Engineer to manage, maintain, and optimize our IT infrastructure. You will play a key role ensuring the stability, security, and efficiency of our enterprise systems. The ideal candidate has hands-on experience with Windows environments, strong troubleshooting abilities, and a proactive approach to system improvements.

Location: Singapore, Singapore
Work Mode: Work from Office
Role: Windows ICT Infrastructure Engineer

Key Responsibilities:

Windows Infrastructure Engineering

• 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.