IT Infrastructure & Systems Manager

IT Infrastructure & Systems Manager

We are seeking an experienced and highly motivated Senior IT Infrastructure Manager with at least 7 to 10 years experience to oversee, manage, and continuously improve the organization's IT infrastructure, enterprise systems, network environment, and end‑user computing services.

The successful candidate will ensure the availability, security, performance, and resilience of critical business systems while leading technical teams and supporting key stakeholders across the organization.

This role requires a strong blend of technical expertise, leadership capability, operational excellence, and stakeholder management skills, within a complex enterprise environment that includes financial, trading, and treasury systems.

Please note that this is a completely hands‑on role and you must be able to be a Network Engineer, Network Security and Systems Manager all rolled in to one function.

The IT Infrastructure & Systems Manager is a full‑time role based in London with a hybrid working arrangement, combining on‑site presence with some work from home. This role is responsible for managing and maintaining the organization's core IT infrastructure, including servers, networks, storage, and cloud services. Day‑to‑day tasks include overseeing system administration, monitoring performance and availability, implementing security best practices, and coordinating backup and disaster recovery processes.

The role involves leading and supporting IT operations, resolving complex technical issues, and ensuring that systems, applications, and services remain stable and secure. The IT Infrastructure & Systems Manager will collaborate with internal stakeholders, manage vendors and service providers, contribute to IT strategy and roadmaps, and document procedures, standards, and configuration changes.

• Strong foundation in Information Technology and IT Operations, including infrastructure design, capacity planning, and service management.
• Hands‑on experience with System Administration and Troubleshooting across Windows and/or Linux environments, virtualization, and cloud platforms.
• Proficiency in Network Security, including firewalls, VPNs, endpoint protection, access control, and security monitoring.
• Proven ability to manage IT projects, prioritize tasks, and deliver improvements on time and within scope.
• Excellent communication and stakeholder management skills, with the ability to explain technical concepts to non‑technical audiences.
• Experience leading or mentoring IT team members or support staff is highly desirable.
• Relevant certifications (eg, ITIL, Microsoft, Cisco, CompTIA, or cloud certifications) are an advantage.
• Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent practical experience.

• Administer, maintain, and optimize Windows and Linux server environments.
• Manage VMware virtualized infrastructure (vSphere 8 and above).
• Oversee enterprise backup and disaster recovery solutions using Veeam Backup & Replication.
• Manage Veeam ONE monitoring and Veeam Recovery Orchestrator (VRO) environments.
• Administer endpoint security and encryption solutions, including Symantec Endpoint Protection (SEP) and Symantec Endpoint Encryption (SEE).
• Support endpoint DLP, SIEM, and security monitoring tools (eg, Splunk, Tenable).
• Manage patching processes using Manage Engine Patch Manager Plus.
• Support Microsoft 365 services and related cloud technologies.
• In depth understanding of Cyber security
• Monitor system performance, capacity, availability, and infrastructure health.
• Ensure compliance with IT governance, security policies, and operational standards.

• Provide advanced desktop, laptop, printer, Mobile device (iOS) and branch office IT support.
• Deliver AV support for meeting rooms, conferencing, presentations, and collaboration systems.
• Manage OS deployment, imaging, image creation, maintenance, and software packaging.
• Administer Active Directory (AD), Group Policy Objects (GPOs) and user provisioning and NTFS permissions.
• Support Microsoft 365 applications including Outlook, Teams,…