As the Senior Windows Administrator, you will be a part of a global team responsible for the management and monitoring of a large number of Windows systems in all regions of the world.  Core functions for this role include management of server and storage systems, issue resolution, patching, management of new installations, upgrades, and migrations, including AI-driven approaches, to enhance operational excellence.

This role includes responsibilities for interacting with internal customers at ISS STOXX. 

Key Responsibilities

Hands-on operational activities:

• Install, configure, test and maintain client and server systems, application software, server applications and system management tools 

• Install and upgrade infrastructure systems and processes 

• Manage and monitor all installed systems and infrastructure, including hybrid environments. 

• Proactively ensure the highest level of systems and infrastructure availability 

• Provide technical support for both hardware and software issues 

• Contribute to technical decision‑making, offering pragmatic input that balances best practice with business realities 

• Participate in on‑call rotations and after‑hours support, taking responsibility for service restoration and clear communication during incidents 

• Lead or contribute to post‑incident reviews with a focus on prevention, system resilience, and service improvement

• Participate in scheduled patching and maintenance activities, including coordination, execution, validation, and post‑maintenance support

• Demonstrate curiosity in using AI-assisted tools to enhance troubleshooting, automation, documentation, and proactive system improvements

Cloud and Virtualization: 

• Administer and support GCP services, including Compute Engine, Cloud IAM, and other relevant services 

• Optimise VMware environments to ensure efficient resource utilisation and system availability 

• Support and evolve hybrid infrastructure leveraging Google Cloud Platform, contributing to cloud adoption, migration, or optimisation initiatives

Automation: 

• Develop and maintain PowerShell and batch scripts to automate repetitive administrative tasks, reduce manual effort, and improve system consistency 

• Identify opportunities to streamline operational processes through automation, documentation, and tooling improvements 

• Contribute to the evolution of infrastructure standards, runbooks, and operational best practices 

Required Qualifications

• BA in Information Systems or related field, or equivalent experience 

• 5+ years of proven experience with Windows administration and support 

• Working knowledge of Windows Server technologies (such as Active Directory, DNS, DHCP and File/Print services)

• Demonstrated interest or curiosity in leveraging AI or intelligent tooling to improve day-to-day system administration practices

• Basic to Intermediate scripting skills using batch scripts and PowerShell 

• Working knowledge of standard Windows security methodologies, hardening procedures, and best practices 

• Excellent communication & documentation skills, both in technical and non-technical areas 

• Ability to work with a global support team, including ticket management applications such as Jira and ServiceNow 

• Hands-on experience with the VMWare environment and general principles of virtualization 

• Hands-on experience with Cloud computing (GCP/Azure)

• Familiarity with backup needs and approaches 

• Ability and willingness for on-call and after-hours work 

• Ability to prioritize and work well under pressure 

Preferred Qualifications 

• Basic familiarity with Linux 

• Knowledge of storage systems and management

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