Enterprise Architect

At Hitachi Solutions Europe we are the leading European Microsoft Gold Partner for Microsoft Azure & Cloud Solutions, Data and AI, Dynamics 365 and Microsoft Power Platform. We deliver complex, large-scale transformation programmes for public sector and regulated industry clients across the UK and Europe.

We are looking for an experienced Enterprise Architect to join our team and provide overarching architectural leadership across major client engagements. You will own the end-to-end technical vision, govern cross-workstream coherence, and ensure that every architectural decision is defensible, traceable, and fit for long-term service evolution.

This is a senior client-facing role. You will operate at programme leadership level, engage with client governance bodies, and work alongside Solution Architects, Technical Leads, and Delivery Managers to translate strategic intent into a coherent, deliverable architecture.

Key Responsibilities

• Architectural Leadership: Own and maintain the end-to-end target architecture across complex, multi-workstream programmes. Ensure coherence across front ends, integration, core processing, finance, and data platform decisions.
• Technical Governance: Serve as the primary technical authority on engagements. Chair architecture design reviews, own cross-cutting design decisions, and ensure all solution options are evaluated against agreed architecture principles and client constraints.
• Integration Architecture: Define and govern integration architecture across enterprise platforms. Ensure all system-to-system communication follows governed API patterns, with end-to-end traceability, event-driven design, and operational observability built in from the start.
• Cross-Workstream: Provide architectural oversight and challenge across parallel delivery tracks, ensuring track-level decisions do not create cross-track conflicts, duplication, or technical debt. Maintain a single coherent architecture across all workstreams without becoming a delivery bottleneck.
• High-Risk Architecture Decisions: Lead architectural decision-making on the highest-risk programme areas, including data migration feasibility, system replacement and coexistence strategies, compliance-critical service design, and transition sequencing.
• Stakeholder and Governance Engagement: Engage with client architecture governance bodies, technical assurance groups, and security review processes. Produce architecture artefacts suitable for formal assessment, regulatory review, and internal governance sign-off.
• Transition and Migration Strategy: Define transition and migration strategies for complex legacy estates, including parallel running, data profiling, cutover sequencing, and coexistence patterns that allow services to continue operating throughout delivery.
• Risk and Assurance: Identify, own, and drive resolution of architectural risks across the programme. Maintain a clear risk and assumption log. Escalate blockers early and propose mitigation options rather than deferring decisions.
• Delivery Enablement: Work closely with Solution Architects, Technical Leads, and Functional Leads to ensure delivery teams have clear architectural guidance. Translate architectural intent into actionable design constraints and patterns that teams can build to confidently.
• Practice Development: Contribute to Hitachi Solutions' architectural practice, sharing patterns, lessons learned, and reusable assets across engagements, and supporting the development of less experienced architects within the team.