Principle Windows Security Engineer

Quant Capital; Greater London; Hybrid; GBP 100,000 - 125,000; Full time

Job summary

A leading trading firm in Greater London seeks a Principal Windows Security Engineer to enhance their global security posture. This hybrid role involves designing security controls across Windows platforms, driving vulnerability management initiatives, and improving endpoint security. The ideal candidate will possess strong expertise in Windows engineering and automation. You will work in a fast-paced environment with a high-performing team, addressing technical risks and emerging threats.

Qualifications

• Experience in designing and implementing security controls in Windows environments.
• Strong background in vulnerability management and remediation.
• Familiarity with endpoint security technologies like EDR and AV.

Responsibilities

• Design and implement security controls across Windows platforms.
• Drive vulnerability management initiatives to remediation.
• Build automation around configuration and incident response.
• Investigate emerging threats and advise on risks.

Skills

Windows Engineering

Endpoint Security

Automation

Vulnerability Management

Threat Mitigation

Job description

Job Description

Principle Windows Security Engineer – Windows, Automation, Endpoint Security

London – Hybrid

Industry Leading Compensation

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

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