Head of Cyber Security

Orbis Group; Greater London; On-site; GBP 180,000 - 260,000; Full time

Job summary

Orbis Group partnering with a global hedge fund seeks a Head of Cyber Security to lead and evolve its security function in a fast-paced trading environment. This role requires a hands-on leader who understands the security challenges of prop trading, modern engineering platforms, and AI-enabled technologies.

You will work directly with senior leadership while remaining close to engineering, shaping security strategy and driving technical delivery across the organisation.

Qualifications

• Lead the cyber security function within a trading environment.
• Define and execute the firm's cyber security strategy.
• Partner with engineering to embed security into software and infrastructure.
• Drive AI security and governance across the organisation.
• Protect trading systems and sensitive market data; manage incidents.

Responsibilities

• Lead the cyber security function and set the strategic direction.
• Collaborate with engineering to implement secure SDLC and cloud security.
• Oversee incident response, threat management, and security engineering initiatives.
• Mentor and develop a small security team.
• Engage with senior leadership on risk and governance.

Skills

Leadership

Cyber security

AI security

Security strategy

Stakeholder communication

Education

Bachelor's degree in CS or related field

CISSP / CISM or equivalent

Tools

Cloud security platforms

Security incident tools

Job description

We're partnering with a global hedge fund to appoint a Head of Cyber Security to lead and evolve its security function.

This is a hands-on leadership role for someone who understands the unique cyber security challenges of a trading environment, from protecting proprietary trading systems and intellectual property to securing modern engineering platforms and AI-enabled technologies.

You'll work directly with senior leadership while remaining close to engineering, shaping security strategy and driving technical delivery across the organisation.

Key responsibilities include:

• Leading the cyber security function.
• Defining and executing the firm's cyber security strategy.
• Partnering with engineering to embed security into software development and infrastructure.
• Driving AI security and governance across the organisation.
• Protecting trading systems, sensitive market data and intellectual property.
• Leading incident response, threat management and security engineering initiatives.
• Managing and mentoring a small team of security professionals.

Requirements:

• Proven experience leading cyber security within a trading firm, investment bank, hedge fund, market maker or electronic trading environment.
• Strong hands-on background across security engineering, cloud security and application security.
• Experience working closely with engineering teams in fast-paced, technology-driven organisations.
• Good understanding of AI security, secure software development and modern cloud environments.
• Comfortable operating at both executive and technical levels.

This is an opportunity to shape the security strategy of a technology-driven trading business while remaining hands-on and working directly with senior leadership.

Please note that previous employer references will be required during application