Security Engineer

4 weeks ago

London, United Kingdom Quant Capital Full time

Principle IT Security Engineer – Windows, Automation, Endpoint Security
Industry leading compensation
London – Hybrid
Quant Capital is partnered with a leading trading firm looking to hire an IT Security Engineer to strengthen their global security posture. This role sits inside a high-performing engineering group and suits someone who can own technical decisions, cut through noise, and build security controls that scale.
You’ll work across Windows engineering, endpoint security, automation, vulnerability management and platform hardening. The environment is fast-moving and technically demanding — you’ll be the person the wider IT team turns to for sound judgement and clarity.
Designing and implementing security controls across Windows platforms
Building automation around configuration, monitoring, and incident response
Improving endpoint security: EDR, AV, patching, OS hardening
Working with core infrastructure (AD / Entra ID, PKI, networking)
Investigating emerging threats and advising on technical risk
Supporting global IT teams across a large distributed environment
Strong Windows security engineering experience
Experience with OS hardening, privileged access concepts, identity and security best practice
High level PowerShell programming skills
This role suits someone who wants real ownership, thrives under pressure, and enjoys solving complex security problems at scale.

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