Information Security Manager

Cornerstone is the UK’s leading mobile and digital infrastructure provider, managing over 15,700 sites and holding 35% of the market. Our Mission is to be famous for excellence in delivery, embracing transformation with our people and our customers at its heart.

As Cornerstone’s Information Security Manager, you will lead the development, implementation, and continuous improvement of our Information Security Management System (ISMS), ensuring alignment with ISO 27001:2022. You will be responsible for safeguarding our digital infrastructure, managing cyber risk, and embedding a security-first culture across the organisation.

This is a strategic and hands-on role, requiring collaboration across IT, legal, procurement, and operational teams. You will act as the primary point of contact for all matters related to information assurance, supplier security assurance, incident response, and regulatory compliance.

Scope

IT Security Operations