Principal IT Security Engineer – Trading

Overview

In this role you will strengthen the firm’s security posture by owning Windows security engineering, endpoint protection, and automation at scale. You’ll work across Windows platforms, AD/Entra ID, PKI, and core infrastructure to implement robust controls and threat mitigation. The position combines hands-on engineering with advisory work to support global IT teams in a fast-moving environment. You’ll drive vulnerability management and platform hardening, influencing technical decisions and security best practices.

Responsibilities

• Design and implement security controls across Windows platforms
• Drive vulnerability management initiatives and remediation at scale
• Automate configuration, monitoring, and incident response
• Improve endpoint security (EDR, AV, patching, OS hardening)
• Collaborate with core infrastructure (AD / Entra ID, PKI, networking)
• Investigate threats and advise on technical risk
• Support global IT teams across a distributed environment

Key requirements

• 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 practices
• Knowledge of common attack techniques and countermeasures
• Good grasp of Active Directory/Entra ID and PKI
• High level PowerShell programming skills
• Clear communicator, reliable, collaborative, able to influence technical decisions

• Clear communicator
• Collaborative
• Influential
• Windows security engineering
• Endpoint protection (EDR, AV)
• Vulnerability management

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