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Unison Group Hiring! Full Time Windows Infrastructure Engineer in - Ricebowl

Windows Infrastructure Engineer

Unison Group

Undisclosed

Full Time

Singapore

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Working Location

  • Singapore

Job Description

Responsibilities

Role Attributes
  • To manage and support enterprise Windows Server, Active Directory, and VMware infrastructure, ensuring high availability, security, resilience, and operational excellence across Production and Non-Production environments.
  • Drive modernization, automation, standardization, and continuous improvement of core infrastructure services.
  • Ensure end-to-end ownership of Windows infrastructure services including server lifecycle, Active Directory, virtualization, patching, security, and operational governance.
  • Act as technical focal point with key stakeholders such as Tech Risk, IS, Internal / External Audit, Cloud, Network, and Application teams.
  • Drive best practices in infrastructure reliability, automation, monitoring, and service resilience.
  • Maintain awareness of industry best practices, emerging technologies, AI Ops, and infrastructure modernization trends.
Key Responsibilities
  • Manage enterprise Windows Server environments (2016 / 2019 / 2022) across Production and Non-Production.
  • Manage Active Directory services including Microsoft Active Directory, Domain Controllers, DNS, DHCP, GPO, authentication, replication, and identity lifecycle.
  • Manage and optimize VMware infrastructure including vCenter, ESXi, HA, DRS, vMotion, vSAN, and DR platforms.
  • Execute server provisioning, upgrades, migrations, patching, hardening, and secure decommissioning.
  • Ensure infrastructure monitoring, alerting, capacity planning, and performance optimization.
  • Manage incidents, root cause analysis, problem management, and change activities aligned to ITIL practices.
  • Ensure security compliance, vulnerability remediation, backup, DR readiness, and BCP requirements.
  • Develop automation using PowerShell / scripting tools to improve efficiency.
  • Maintain accurate SOPs, architecture diagrams, operational runbooks, and technical documentation.
  • Provide technical mentoring and guidance to junior engineers.
  • Participate in standby / on-call support where required.
Key Decisions within the Role
  • Windows Infrastructure roadmap and lifecycle strategy.
  • AD modernization and security improvements.
  • VMware capacity planning and optimization.
  • Operational risk remediation and service improvement priorities.
  • Infrastructure standards, automation, and technical governance.
Requirements
  • 10+ years of infrastructure engineering experience, preferably in Insurance / Financial Services environment.
  • Strong hands-on expertise in Windows Server, Microsoft Active Directory, DNS, DHCP, and GPO.
  • Strong experience in VMware vSphere / ESXi / vCenter administration.
  • Experience in production support or Site Reliability / Operations environment.
  • Strong troubleshooting, stakeholder management, and communication skills.
  • Experience managing critical incidents and multiple priorities in fast-paced environments.
  • Experience in scripting / automation using PowerShell preferred.
  • Presentation and documentation skills with ability to engage technical and non-technical audiences.

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