Senior IT Security Engineer – Windows, Automation, Endpoint Security

Company: Quant Capital
Apply for the Senior IT Security Engineer – Windows, Automation, Endpoint Security
Location: London
Job Description:

Overview

In this role you will strengthen the global security posture within a high-performing engineering group. You design and deploy security controls across Windows platforms, drive vulnerability management at scale and build automation for configuration, monitoring and incident response. You will enhance endpoint security (EDR, patching, OS hardening) and collaborate with AD/Entra ID, PKI and networking teams. Expect a fast-moving, technically demanding environment where your clear judgement guides risk mitigation and cross-team collaboration.

Responsibilities

  • Design and implement security controls across Windows platforms
  • Drive vulnerability management initiatives and close remediation at scale
  • Build automation around configuration, monitoring and incident response
  • Improve endpoint security across EDR, AV, patching and OS hardening
  • Work with core infrastructure including AD / Entra ID, PKI and networking
  • Monitor emerging threats and advise on technical risk
  • Support global IT teams in a large distributed environment

Key requirements

  • Strong Windows security engineering experience
  • Solid understanding of host-based controls: application control, firewalling, logging, encryption
  • Hands-on experience with EDR, endpoint protection, scanning and patching
  • Background in OS hardening, privileged access and security best practice
  • Knowledge of common attack techniques and the controls that mitigate them
  • Good grasp of Active Directory / Entra ID and PKI
  • High-level PowerShell scripting skills
  • Clear communicator who can influence, collaborate and take ownership
  • Clear communicator
  • influence and collaboration
  • ownership
  • Windows security engineering
  • EDR / endpoint protection
  • OS hardening

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Posted: September 14th, 2026