Senior IT Infrastructure & Systems Manager

Job Reference: NJ0590

Date Posted: 17 August 2026

Recruiter:
Nexus Jobs Limited

Location:

London Remote Working:
Some remote working possible

Salary: 55,000 to 60,000

Sector: I.T. & Communications Job Type: Permanent

Work Hours:

Full Time Contact:
Jas Gujral Email: cv Telephone:
Apply for this job nowJob Description Senior 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.

Infrastructure & Systems Management 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 (e.g., 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. 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, One Drive, and SharePoint. Resolve technical incidents and service requests in line with agreed SLAs. Enterprise Applications & Financial Systems Support Support and administer business-critical applications, including:
Bloomberg FXT and Refinitiv Eikon, Murex Treasury System, SWIFT Alliance Access (SAA), 1

AML, SIBS, GFMS, COP Support enterprise file synchronization and replication solutions (e.g., Syncovery, other SFTP). Networking Configure and support Cisco switches and routers. Administer Forti Gate firewall environments. 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, SOP’s, 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 & VirtualizationVMware vSphere / vCenter (v8.0.3 and above) Veeam Backup & Replication Veeam ONE, VROMicrosoft Office 365 Manage Engine Patch Manager Plus SAAS solutions SQL Server Security Symantec  Endpoint Protection (SEP) Symantec Endpoint Encryption (SEE) Sentinel One – EDR/ XDREndpoint DLP solutions Firewall administration Vulnerability management tools (e.g., Tenable) SIEM tools (e.g., Splunk) Networking Cisco Switches and Routers Forti Gate Firewalls LAN/WAN networking and routing Hardware & Storage Dell Power Edge Servers Dell Power Vault 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, NTFSPower

Shell scripting SQL Server administration Understanding of software development lifecycle (SDLC) and deployment processes…