Lead Infrastructure Engineer

Company: Quant Capital
Apply for the Lead Infrastructure Engineer
Location: London
Job Description:

Quant Capital is working with a regulated financial services firm looking to hire an Infrastructure Lead/Manager to lead a small team and take ownership of a broad Microsoft and Azure estate.

This is a hands-on leadership role. You will manage three engineers while staying close to the technology across infrastructure, cloud, networking and security.

The role

  • Lead infrastructure operations across cloud, on-premise and end-user platforms
  • Manage and develop a small infrastructure team
  • Support Windows Server, Active Directory, Entra, Group Policy, Microsoft 365 and Intune
  • Own availability, patching, performance and disaster recovery readiness
  • Manage networking, firewalls, VPNs, Wi-Fi, DNS and related connectivity
  • Oversee virtualisation, storage, backup and monitoring platforms
  • Improve security across endpoints, email, access controls, SIEM, MFA and vulnerability management
  • Work with external security partners, pen testers and technology vendors
  • Improve documentation, standards and operational processes

What we are looking for

  • 8+ years’ experience across infrastructure, systems or cloud engineering
  • Previous team leadership or management experience
  • Azure experience across VNETs, VPNs, NSGs, DNS, RBAC and resource groups
  • Networking knowledge across TCP/IP, VLANs, VPNs, Wi-Fi and DNS
  • Experience with Cisco, Fortinet or similar network/security hardware
  • Strong security focus across patching, hardening, vulnerability management and incident response
  • Understanding of GDPR, PCI or ISO27001 environments
  • Clear communicator with strong ownership and good judgement

This role suits someone who wants a broad infrastructure leadership position where they can stay hands-on and improve security, resilience and operational standards.

All applications are handled in strict confidence.

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Posted: September 21st, 2026