Senior Infrastructure Administrator (Windows Server & VMware)

We are seeking a highly skilled Windows Server and VMware Administrator to manage, maintain, and modernise enterprise infrastructure environments. The ideal candidate must possess strong expertise in Windows Server administration, VMware vSphere/ESXi, and server upgrade and migration projects. The individual will play a key role in planning, executing, and supporting Windows Server upgrade initiatives while ensuring high availability, security, and operational excellence.

Key Responsibilities

Windows Server Administration

• Administer and maintain Windows Server environments (2012, 2016, 2019, 2022 and later).
• Perform server provisioning, configuration, patching, and lifecycle management.
• Manage Active Directory, Group Policies (GPO), DNS, DHCP, and certificate services.
• Monitor server health, performance, capacity, and availability.
• Troubleshoot complex operating system and infrastructure issues.

Windows Server Upgrade & Migration

• Lead Windows Server upgrade and migration projects.
• Assess existing server landscapes and develop upgrade strategies.
• Perform in-place and side-by-side migrations.
• Coordinate application compatibility assessments.
• Execute upgrade activities with minimal business disruption.
• Develop rollback and contingency plans.
• Conduct testing, validation, and post-upgrade support.

VMware Administration

• Administer VMware vSphere, ESXi, and vCenter environments.
• Manage virtual machine lifecycle operations.
• Configure and maintain clusters, HA, DRS, vMotion, and Storage vMotion.
• Perform VMware host upgrades and patch management.
• Optimize virtual infrastructure performance and capacity.

Infrastructure Operations

• Support enterprise backup and disaster recovery solutions.
• Implement security hardening and vulnerability remediation.
• Manage monitoring tools and operational dashboards.
• Participate in Incident, Problem, and Change Management processes.
• Develop and maintain infrastructure documentation and standard operating procedures.

Automation & Scripting

• Automate routine administration tasks using PowerShell.
• Develop scripts for server provisioning, upgrades, compliance checks, and reporting.
• Improve operational efficiency through automation.

Technical Skills

Mandatory

• Windows Server 2012/2016/2019/2022 Administration
• VMware vSphere, ESXi, vCenter
• Active Directory, DNS, DHCP, Group Policy
• Windows Server Migration and Upgrade Planning
• PowerShell Scripting
• Patch Management (WSUS/SCCM/MECM)
• High Availability and Disaster Recovery
• Incident, Problem, and Change Management

Preferred

• VMware SRM
• Hyper-V
• Azure IaaS
• Veeam / Commvault Backup Solutions
• SCOM, SolarWinds, LogicMonitor
• Microsoft Entra ID (Azure AD)
• Storage and Compute Infrastructure (Dell, HPE, Cisco UCS)

Certifications (Preferred)

• VMware Certified Professional (VCP)
• Microsoft Certified: Windows Server Hybrid Administrator Associate
• Microsoft Azure Administrator Associate
• ITIL Foundation

Key Deliverables

• Successful execution of Windows Server upgrade projects.
• Improved infrastructure stability, availability, and security.
• Timely resolution of critical incidents.
• Compliance with patching and security standards.
• Accurate infrastructure documentation and operational runbooks.

Soft Skills

• Strong stakeholder communication.
• Excellent troubleshooting and analytical skills.
• Ability to lead infrastructure upgrade initiatives.
• Experience working with global teams and change windows.
• Strong documentation and presentation skills.

Skills Required:

Must have:

GCP data platform architecture [BigQuery, Dataflow, Managed Apache Airflow (formerly Cloud Composer)]

secure data governance (NIST CSF, Assured Workloads, DLP/Encryption)

AI/ML integrations (Vertex AI, Agent Builder, BQ Conversational Analytics)

Good to have:

Cloud migration from Azure Data Lake