The Company Our client is a leading global investment management company looking for an experienced IT Infrastructure Security Engineer, maintain, and enhance the organization's IT infrastructure. The role covers systems, networks, security, and end-user platforms, with hands-on responsibility across Microsoft technologies and network environments. The Role Systems & Infrastructure Administer and support Windows Server environments and Active Directory Manage user access, group policies, and identity lifecycle Support and maintain Microsoft 365 (Exchange Online, SharePoint, Teams, OneDrive) Network & Security Design, implement, and support network infrastructure (LAN/WAN, VLANs, VPNs) Configure and maintain firewalls and network security devices Monitor network performance, availability, and security Operations & Support Provide Level 2/3 support for infrastructure-related incidents and requests Troubleshoot system, network, and connectivity issues Ensure system availability, backup, d...