Company: Onyx-Conseil
Location: London
Posted: May 8th, 2026
As Principal Enterprise Architect (Data), you’ll play a leading role in shaping how trusted company data is designed, governed and reused at national scale, supporting services accessed by millions of users every day.
This is a senior technical leadership role where your decisions will directly influence:
How data is treated as a core enterprise asset
How legacy and modern systems work together
How trust, interoperability and reuse are built into data by design
As Principal Enterprise Architect (Data), you will:
Set the enterprise‑level directionfor data architecture and strategy
Define and govern data models, standards and integration approaches
Design architectures that work across legacy systems, cloud platforms and third‑party services
Act as the authoritative voice on enterprise data, providing assurance and guidance across programmes and projects
Enable secure, trusted and reusable data across the organisation
Work closely with architects, delivery teams and senior stakeholders to reduce risk and improve data quality
Influence long‑term transformation while supporting immediate delivery needs
You’ll lead work across:
Enterprise and domain data modelling
Canonical data definitions and integration patterns
Data governance, quality, ownership and lifecycle management
APIs, distributed services and interoperability
Secure handling of personal and sensitive data
Alignment with legal, regulatory and policy requirements
You’ll also provide specialist advice on:
Data migrations and legacy transformation
Platform and tooling decisions
Enterprise standards and architectural assurance