Senior Windows System Engineer - 12 month day rate contract Job Description: Our client, a large enterprise organisation, is seeking an experienced Senior Windows Systems Engineer to support and enhance a complex Microsoft infrastructure environment spanning multiple tenants and a large user base. The successful candidate will play a key role in modern workplace technologies, identity management, cloud services, and enterprise collaboration platforms. Job Responsibilities Administer and support Microsoft 365 environments across multiple tenants within a large-scale enterprise setting Manage and maintain Entra ID environments, including identity lifecycle management and access governance Configure and support Microsoft Teams, including Enterprise Voice capabilities and collaboration services Design, implement, and maintain Conditional Access Policies and identity security controls Support Exchange Online administration, mail flow management, and tenant configuration Assist with tenant o...