Cyber Defence Operations Director

This is an opportunity to lead global Security Operations focused on safeguarding Arm's digital environment through exemplary threat detection, incident response, and vulnerability management capabilities.

This senior role, reporting directly into the CISO, is accountable for driving the strategic direction of Arm's Detect & Response function, delivering outstanding performance and ensuring we are resilient against an evolving threat landscape. In addition to operations, you will lead cyber crisis management, C-Suite level stress testing, team development, and top-level cybersecurity thought leadership.

• Own and deliver the strategic roadmap for cyber incident and vulnerability detection & response in line with Arm's threat profile and business objectives. You will guide and develop a high-performing team, driven with context of emerging threats and strategic objectives.
• Ensure Threat Intelligence, Proactive Security Testing, and Security Analytics functions develop under your leadership to deliver maximum context into the operational team, as well as enabling real-time risk validation and actionable security insights.
• Continue delivering automation and detection as code for security operations, enabling increased scalability and efficiency while maximizing data insights and intelligence to inform operational and strategic decision-making.
• Drive collaboration across Arm and external vendors as we embed a shared understanding to deliver our cyber strategies. Provide strategic input and collaborate with IT, Enterprise Security, and business leadership to inform security roadmaps, governance, and operating models.
• Maintain a balanced, comprehensive framework of processes, governance, and performance metrics (e.g., SLAs) for operations. Coordinate security testing, audit, governance, and operational reporting.
• Champion a culture of continuous learning, training, and professional development across the team, including handling wellbeing and performance for an agile, high-impact environment.
• Maintain awareness of internal and external technology development, particularly across emerging AI use, enabling continuous improvement and innovation.

• 10+ years of experience in a security role focused on the entire threat lifecycle with demonstrated experience designing and implementing Security Operations strategies within a sophisticated enterprise and disparate technological landscape. Demonstrated leadership in high-stress, fast-paced operational environments.
• Excellent communication skills and ability to convey complex security issues to senior leadership, including the executive committee. Deep understanding of enterprise security domains and how they can be used as a force multiplier for a technology business strategy, with the ability to influence at all levels.
• Extensive people management experience, fostering a culture focused on mentoring, wellbeing, and trust.

BSc or higher or equivalent experience within a relevant security-related subject.

Certifications such as CISSP, GCIH, GIAC, GCFE, GREM, or SANS certifications. Solid grasp of ITIL and familiarity with project management methodologies.

Experience leading security transformation initiatives, as well as handling third-party vendors and external security partnerships for large-scale organizations with a considerable global digital footprint.