Senior Staff Information Security Engineer

We are seeking a Senior Staff Information Security Engineer to help shape and advance security across our hybrid technology estate. Our environment spans AWS and on-premises infrastructure hosted in colocation facilities.

You will provide senior technical leadership across both environments, defining secure architecture patterns, building scalable controls, and partnering with Engineering, Product, SRE, and Infrastructure teams to reduce risk without creating unnecessary barriers to delivery. This is a senior individual-contributor role.

You will remain hands-on while acting as a trusted technical authority for complex security architecture and engineering decisions. You will lead initiatives that cross teams and technologies, address systemic security challenges, and improve how security is designed and implemented across the organisation.

The role is primarily remote, with occasional in-person responsibilities at our Bristol, UK office and, where necessary, our colocation facilities. What you'll do: Lead Infrastructure Security Architecture Define and evolve security architecture across AWS and our colocation estate.

Establish secure reference architectures, engineering standards, and reusable control patterns. Provide technical leadership for major infrastructure, platform, and product initiatives. Identify systemic risks and lead practical, sustainable programmes to address them.

Strengthen Cloud and Hybrid Security Design and improve security across cloud accounts, networks, identities, workloads, and shared services. Establish effective controls for identity and access management, segmentation, encryption, secrets, logging, monitoring, and workload protection.

Develop preventative guardrails through infrastructure-as-code, policy-as-code, automation, and cloud-native security services. Improve consistency across the enterprise including cloud, on-premises infrastructure, and the connectivity between them. Partner with Engineering and Product Engage early in th