About the role

You’ll lead Arm’s Proactive Threat Defence function, defining and delivering a proactive assurance and threat-hunting programme that continuously tests and strengthens Arm’s cyber defences and sharpens its threat-informed edge!

This hands-on leadership role involves guiding a small, high-performing team, providing both technical direction and people leadership. The position partners closely with Detect & Respond, Vulnerability Management, Security Architecture, and internal customers to define and deliver a proactive defence roadmap. You will be setting strategy and remaining deeply engaged in technical design, execution, and iterative improvement.

Responsibilities

• Design and lead red & purple team exercises
• Lead the strategy and delivery of red/purple team engagements aligned to real-world adversarial behaviour.
• Drive iterative improvement of detection, response, and resilience through defender collaboration. ...