Head of Enterprise Architecture

Role Purpose

The Head of Enterprise Architecture owns the design, security, and evolution of PSA BDP's global technology estate spanning AWS cloud and on-premises infrastructure, ensuring the organisation's platforms scale reliably, are secured by design, and are positioned to adopt emerging technology responsibly. This role leads the modernisation of PSA BDP's core in-house developed applications, owns the Dev Ops organisation, and sets the engineering standards and training that raise the bar for how PSA BDP builds and operates software.

The role reports directly to the CIO and operates as a key member of the extended IT leadership team, translating strategic technology direction including programmes such as our AI investment and platform modernisation / rationalisation into a coherent, governed architecture that the rest of the organisation can build on with confidence.

The Head of Enterprise Architecture owns the design, security, and evolution of PSA BDP's global technology estate spanning AWS cloud and on-premises infrastructure, ensuring the organisation's platforms scale reliably, are secured by design, and are positioned to adopt emerging technology responsibly. This role leads the modernisation of PSA BDP's core in-house developed applications, owns the Dev Ops organisation, and sets the engineering standards and training that raise the bar for how PSA BDP builds and operates software.

The role reports directly to the CIO and operates as a key member of the extended IT leadership team, translating strategic technology direction including programmes such as our AI investment and platform modernisation / rationalisation into a coherent, governed architecture that the rest of the organisation can build on with confidence.

• Own the enterprise architecture function end to end, setting the standards, reference patterns, and governance that ensure PSA BDP's technology estate is scalable, resilient, and secure across both AWS and on-premise environments.
• Define and maintain a target-state architecture and multi-year technology roadmap, aligned to PSA BDP's strategic programmes and to the CIO's broader technology vision.
• Chair an architecture review governance process for significant technology decisions, ensuring new solutions are assessed against scalability, security, cost, and total-cost-of-ownership principles before they are built.
• Partner closely with security/information security functions to embed security-by-design across the estate, identity and access management, data protection, network segmentation, and cloud security posture across AWS and on-premise workloads alike.
• Own the evaluation and responsible adoption of emerging technology, including AI and agentic platforms, balancing innovation with enterprise risk, data governance, and operational resilience, collaborating with respective innovation teams and partners
• Act as the senior technical authority on hybrid cloud/on-premise architecture decisions, ensuring workload placement, integration patterns, and infrastructure investment are made deliberately rather than by accident of history.
• Support teams to rationalize cloud and AI spend based on best practices, oversee application rationalisation and removal of shadow IT where appropriate.

• Own and lead the modernisation programme for PSA BDP's core in-house developed applications, moving the estate toward modern, cloud-native, API-first architectures.
• Define a modernisation prioritisation framework — balancing business value, technical debt, security exposure, and operational risk — to sequence which applications are modernised, re-platformed, or retired.
• Partner with product and business stakeholders on application rationalisation across the broader portfolio, ensuring modernisation investment is tied to genuine business outcomes rather than technology for its own sake.
• Set and report technical debt reduction targets and modernisation KPIs to the CIO and, where relevant, to ExCo.

• Own the Dev Ops organisation, including CI/CD pipelines,…