Senior IT Infrastructure & Systems Manager

Senior IT Infrastructure & Systems Manager

We are seeking an experienced and highly motivated Senior IT Infrastructure Manager with at least 7 to 10 years of 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.

Infrastructure & Systems Management

• Administer, maintain, and optimise Windows and Linux server environments.
• Manage VMware virtualised 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 (e.g., Splunk, Tenable).
• Manage patching processes using ManageEngine 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.

End-User Computing Support

• 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, OneDrive, and SharePoint.
• Resolve technical incidents and service requests in line with agreed SLAs.

Enterprise Applications & Financial Systems Support

• Support and administer Bloomberg FXT.
• Support and administer Refinitiv Eikon.
• Support and administer Murex Treasury System.
• Support and administer SWIFT Alliance Access (SAA).
• Support and administer 1AML.
• Support and administer SIBS.
• Support and administer GFMS.
• Support and administer COP.
• Support enterprise file synchronization and replication solutions (e.g. Syncovery, other SFTP).

Networking

• Configure and support Cisco switches and routers.
• Administer FortiGate firewall environments.
• Apply strong network fundamentals: DNS, DHCP, TCP/IP, LAN/WAN, routing and connectivity troubleshooting.
• Monitor network performance, availability, and security posture.

Security & Endpoint Management

• Support vulnerability management using tools such as Tenable.
• Manage security monitoring and log analysis tools (e.g. Splunk).
• Perform SSL/TLS certificate lifecycle management using OpenSSL.
• Create and manage CSRs, certificate chains, and private keys.
• Ensure adherence to cybersecurity policies, standards, and regulatory requirements.
• Support physical access control systems (e.g. Paxton).

Governance, Documentation & Process Improvement

• Develop, maintain, and enforce IT policies, standards, and operational procedures.
• Produce system architecture diagrams, technical documentation, SOPs, and performance reports.
• Identify and drive opportunities for automation and service improvement.
• Support technology planning, infrastructure modernization, and transformation initiatives.

Operating Systems

• Windows 11
• Windows Server 2019/2022 (or equivalent enterprise environments)
• Red Hat Linux

Infrastructure & Virtualization

• VMware vSphere / vCenter (v8.0.3 and above)
• Veeam Backup & Replication
• Veeam ONE, VRO
• Microsoft Office 365
• ManageEngine Patch Manager Plus
• SaaS solutions
• SQL Server

Security

• Symantec Endpoint Protection (SEP)
• Symantec Endpoint Encryption (SEE)
• SentinelOne - EDR/XDR
• Endpoint DLP solutions
• Firewall administration
• Vulnerability management tools (e.g., Tenable)
• SIEM tools (e.g., Splunk)

Hardware & Storage

• Dell PowerEdge Servers
• Dell PowerVault SAN Storage

Technical Competencies

• Data analysis and operational reporting
• Desktop and laptop support
• Infrastructure monitoring and performance management
• Certificate lifecycle management (SSL/TLS)
• Windows imaging and deployment, GPO, NTFS
• PowerShell scripting
• SQL Server administration
• Understanding of software development lifecycle (SDLC) and deployment processes
• Architecture review and systems optimisation
• Asset management

Qualifications

• 7+ years of experience in enterprise IT infrastructure and systems administration.
• Experience within financial services, banking, trading, or treasury environments.
• Proven experience managing mission critical infrastructure and applications.
• Experience operating within regulated and security focused environments.
• Able to provide support to VIP stakeholders.

This is a hybrid role - 3 days in the office in Central London.

Salary for this role will be in the range £55K - £60K.