At a Glance
- Tasks: Design and implement security controls across Windows platforms and drive vulnerability management.
- Company: Join a leading trading firm with a high-performing engineering group.
- Benefits: Industry-leading compensation, hybrid work model, and opportunities for professional growth.
- Other info: Collaborative culture where your expertise will be valued and impactful.
- Why this job: Take ownership of security decisions and tackle complex challenges in a fast-paced environment.
- Qualifications: Strong Windows security experience and hands-on skills with endpoint protection tools.
The predicted salary is between 63000 - 77000 £ per year.
Principal 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.
Expect a mix of hands-on engineering, advisory work, and proactive threat mitigation.
The environment is fast-moving and technically demanding — you’ll be the person the wider IT team turns to for sound judgement and clarity.
What you’ll be doing Designing and implementing security controls across Windows platforms Driving vulnerability management initiatives and closing out remediation at scale 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 What you’ll need Strong Windows security engineering experience Solid understanding of host-based controls: application control, firewalling, logging, encryption Hands-on with endpoint protection, EDR, scanning and patching tools Experience with OS hardening, privileged access concepts, identity and security best practice Knowledge of common attack techniques and how to counter them Good grasp of Active Directory/Entra ID and PKIHigh level Power Shell programming skills Clear communicator, reliable, collaborative, able to influence technical decisions This role suits someone who wants real ownership, thrives under pressure, and enjoys solving complex security problems at scale.
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Principal IT Security Engineer – Trading employer: Quant Capital
Quant Capital is an excellent employer for those looking to thrive in the fintech sector, offering a vibrant work culture that fosters innovation and collaboration. With substantial training and development opportunities, employees can enhance their skills while enjoying a flexible hybrid work model in the heart of London. Join us to be part of a forward-thinking team that values growth and cutting-edge technology.
