Senior Windows Infra Engineer: European Hours & On-Call

UNITECH CONSULTING PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

UNITECH CONSULTING PTE. LTD. is seeking an experienced senior Windows infrastructure engineer to manage and support enterprise Windows server environments in a financial services setting.

You will oversee server deployment, performance optimization, security patching, vulnerability remediation, and disaster recovery. The role requires hands-on expertise with Windows Server (2012–2022), Hyper-V, Microsoft Failover Clustering, Active Directory, and related data center hardware.

Qualifications

• Minimum 8–10 years of Windows Server administration and enterprise infra management.
• Minimum 3–5 years of experience in banking/financial services infra.
• Expert-level Windows Server OS (2012/2016/2019/2022) knowledge.
• Expert-level Hyper-V and Failover Clustering.
• VMware vSphere/ESXi/vCenter experience.
• Hands-on with HPE server hardware (DL, Synergy, SimpliVity).
• Active Directory administration, user access and security permissions.
• Security patching, vulnerability assessment and remediation.
• Scripting: PowerShell and Python; Perl/VBScript is a plus.
• Experience with monitoring, patch deployment tools (HP OMI, Tivoli, Altiris, BMC).
• BCP/DR planning and infrastructure failover operations.
• Strong analytical, troubleshooting and communication skills.

Responsibilities

• Manage, troubleshoot, and optimize Windows Server environments across multiple versions.
• Provide SME support for Hyper-V virtualization and failover clustering.
• Maintain VMware vSphere/ESXi/vCenter environments.
• Administer Active Directory including access controls and authentication.
• Maintain enterprise server hardware (HPE DL, Synergy, SimpliVity).
• Perform server deployment, configuration, upgrades, and migrations.
• Apply security patches and remediate vulnerabilities.
• Coordinate vulnerability assessments and remediation tooling.
• Monitor performance, availability, and health with HP OMI, Tivoli, and similar tools.
• Develop automation scripts using PowerShell and Python.
• Support backup, DR testing, and failover operations.
• Participate in infrastructure projects and technology upgrades.
• Collaborate with vendors and internal teams to resolve incidents.

Skills

Windows Server Administration

Hyper-V

Failover Clustering

Active Directory

VMware vSphere/ESXi/vCenter

Scripting (PowerShell, Python)

Security patching & vulnerability

ITIL processes

On-call & rotating shifts

Tools

HP OMI

Tivoli

Altiris

BMC

HPE ProLiant DL

HPE Synergy

HPE SimpliVity

Job description

UNITECH CONSULTING PTE. LTD. is seeking an experienced senior Windows infrastructure engineer to manage and support enterprise Windows server environments in a financial services setting.

You will oversee server deployment, performance optimization, security patching, vulnerability remediation, and disaster recovery. The role requires hands-on expertise with Windows Server (2012–2022), Hyper-V, Microsoft Failover Clustering, Active Directory, and related data center hardware.