Principal Enterprise Architect - Companies House - G7

  • Onyx-Conseil
  • 08/05/2026
Full time Information Technology Telecommunications Management

Job Description

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

What you'll be doing

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

Your technical impact

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