QU

Windows Security Engineer

Quant Capital london Posted 02 Oct 2026 Closing: 01 Nov 2026
Permanent Hybrid

Role Description & Technical Scope

Overview

In this role you will design, test and implement Windows security controls while collaborating with the Cybersecurity and Windows teams. You’ll apply platform security knowledge to harden Windows environments and guide governance through policies and standards. This position offers a high-impact, tech-driven setting with rapid change, where you help protect critical trading infrastructure and systems. A strong hands-on background and appetite for solving complex security problems are essential to thrive in this dynamic firm.

Pay / Benefits
  • bonus
  • benefits
Responsibilities
  • Design, test and implement Windows security controls
  • Provide guidance and escalation support to the Windows team
  • Collaborate with Cybersecurity to enforce security policies and hardening
  • Develop and refine security guidelines, standards and procedures
  • Monitor and improve Windows infrastructure security posture
  • Participate in log aggregation and incident response activities
  • Support platform security across Active Directory, PKI and SQL environments
  • Engage in ongoing hardening, vulnerability mitigation and performance tuning
Key requirements
  • Extensive experience securing Windows platforms
  • Knowledge of Windows vulnerabilities, mitigation methods, and TTP countermeasures
  • Experience with OS hardening and best practices
  • Hands-on experience with core Windows infrastructure (Active Directory, PKI, SQL)
  • Experience developing IT security policies and procedures
  • Strong problem-solving and hands-on capabilities in a fast-changing environment
  • Hands-on
  • Problem-solving
  • Ability to work in demanding environments
  • Windows security
  • OS hardening
  • Active Directory
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Key Details
  • Date Posted: 02 Oct 2026
  • Location: london
  • Employment: Permanent
  • Workplace: Hybrid
  • Domain: General
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Employer Profile
QU
Quant Capital
Verified Tech Employer

Enterprise technology firm or security consultancy operating across the UK digital defense ecosystem.

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