Security Engineer
Full-time
Worldwide
Oct 18, 2026
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About the Role
We're on the lookout for a Security Engineer to join Nucleus' Information Security team, to help ensure that we are secure by design. About the role The Security Engineer supports the delivery of Nucleus’s technology and business change agendas by translating security requirements into practical, working controls. Security requirements are set within the Information Security function; the Engineer is the person who turns them into designed, implemented and validated controls. This includes reviewing technical designs against those requirements, building and configuring the controls, embedding them into our operations, and evidencing that they work as intended. The Engineer works closely with teams across Nucleus, and with outsource partners involved in delivery, to land the right security outcome in each change. The Information Security team aims make sure that Nucleus is a trusted partner to the firms and people we work with. Being able to demonstrate that our systems are secure, through a structured control environment, is a core component of building that trust. This role is critical to delivering that outcome: being the go-to contact for implementing security controls; being ‘hands on’ with their design and configuration; and validating that controls work as intended through technical assessment, identifying opportunities for continuous improvement. Where a control cannot be delivered as intended, this role is also about articulating the resulting risk clearly and pragmat