Senior Infrastructure Engineer (12-month contract) £500-£600 InsideIR35 Overview We are seeking an experienced Senior Infrastructure Engineer for a 12-month contract role with our global financial services client. The ideal candidate will have extensive knowledge of on-premises infrastructure, networking, and global network architectures. Key Responsibilities Manage and maintain on-premises infrastructure and network systems Provide 1st, 2nd, and 3rd-line infrastructure and end-user support for staff in UK, Asia, and European regions Administer and troubleshoot Cisco networking equipment and small global networks Manage firewall technologies and ensure network security Support and maintain VMware environments Oversee Office 365 networks, including related firewalls and on-premises Cisco infrastructure Manage incident logging, prioritization, and resolution for IT ServiceDesk operations Administer user accounts, permissions, and access across various systems Support Microsoft Office applications, including email, messaging, and telephony Perform end-user device setup and software installation Monitor system performance and implement improvements Collaborate with the global IT team on complex issues and infrastructure projects Contribute to IT documentation and implement best practices Manage relationships with IT suppliers and conduct service reviews Requirements Minimum 10 years of experience in Infrastructure and Networking roles Strong understanding of Cisco networking equipment and small global network architectures Extensive knowledge of firewall technologies and network security principles Proficiency with VMware virtualization environments Experience with Office 365 networks, including related firewall configurations and on-premises Cisco infrastructure Expertise in Windows Server environments and Active Directory Strong troubleshooting skills across various hardware and software platforms Experience with ITSM tools and IT service delivery processes Excellent communication skills and ability to explain technical concepts to non-technical staff Adaptability to changing priorities and ability to work under pressure Technologies Hardware: Desktops, Laptops, iPads, iPhones, Telephony systems, Video Conferencing equipment, Printers, Copiers Networking: Cisco switches, Firewalls, On-premises Wi-Fi systems Software: Windows 10/11, iOS, Office 365 (Web, Desktop & Mobile), Microsoft Teams, SharePoint, OneDrive Infrastructure: Active Directory, VMware, ITSM tools (e.g., EasyVista or similar), Remote support tools The successful candidate will play a crucial role in maintaining and optimizing our client's on-premises infrastructure and global networking capabilities. If you think you align to this role please apply with an updated version of your CV.