Integration Architect

Job title: Integration Architect

Contract: six months

Location: London (hybrid)

Job description

We are seeking an experienced SAP Integration Architect to play a critical role in the Landmark Programme, a major transformation initiative to:

• Migrate from SAP ECC to SAP S/4HANA
• Decouple non-finance capabilities from SAP
• Enable full decommissioning of SAP ECC before 2030

This programme addresses a highly complex legacy environment where SAP ECC has become tightly coupled with multiple business processes and systems, creating a bottleneck for change and innovation.

The Integration Architect will lead the design of a simplified, modular integration landscape that enables agility, reduces technical debt, and supports a modern, domain-driven architecture.

Key Objectives of the Role

• Design and govern integration architecture across:
  • Legacy SAP ECC
  • SAP S/4HANA (Finance core)
  • Domain-driven business systems
• Enable the decoupling strategy by:
  • Removing non-finance functionality from SAP
  • Redirecting data flows to domain platforms or integration layers
• Reduce complexity by transitioning from:
  • A highly coupled SAP-centric architecture
  • To a modular, loosely coupled ecosystem
• Support delivery of:
  • Integration Strategy
  • Integration Architecture Design
  • Interface Specifications & build oversight

What You’ll Be Doing

Architecture & Design

• Define the target integration architecture aligned to S/4HANA as the finance system of record.
• Establish integration patterns (APIs, events, messaging) tailored to a decoupled landscape.
• Ensure adherence to programme guiding principles, including:
  • Minimum Viable Integration.
  • Standard first, exception by design.

Decoupling & Transformation

• Liaise with the other business transformation programmes that will need to create new integration designs for removing non-finance capabilities from SAP ECC.
• Redesign outbound and inbound interfaces:
  • Repoint integrations to domain systems
  • Reduce SAP’s role as a central data distribution hub
• Support the move towards:
  • Domain ownership of data
  • Increased pace of change across business areas

Delivery & Governance

• Own or contribute to key artefacts:
  • Integration Strategy
  • Interface Specifications
  • Non-functional requirements (performance, scalability, resilience)
• Work across delivery phases: Design → Build → Test → Deploy (SAP Activate aligned).
• Provide technical oversight of:
  • Integration build and test activities
  • Vendor-led delivery (multi-partner model)

Collaboration & Stakeholders

• Work closely with:
• Enterprise Architecture teams across M&S Digital and Tech.
• SAP functional teams (Finance, PTP, OTC, etc.)
• Domain system teams (Supply Chain, Product, Pricing)
• Partner with system integrators and specialist vendors across the programme.

Candidate Profile

Experience

• Strong SAP integration experience across:
  • SAP ECC
  • SAP S/4HANA
• Demonstrated experience in large-scale transformation programmes.
• Experience designing integration solutions in complex, highly integrated environments.

Technical Skills

• Deep understanding of:
  • Enterprise integration patterns (API, event-driven, messaging)
  • Interface-based integration (IDocs, services, batch, etc.)
  • Data flow and system decoupling strategies
• Experience working with:
  • Multi-system landscapes (ERP + domain systems)
  • Integration platforms and middleware

Architecture & Design Capability

• Proven ability to:
  • Design scalable, modular integration architectures
  • Simplify complex estates and reduce dependencies
• Familiarity with:
  • Domain-driven / service-based architectures

Soft Skills

• Strong stakeholder engagement and influencing skills.
• Ability to operate in multi-vendor, matrix environments.
• Commercially aware, outcome-driven decision making.

Why Join This Programme?

Work on a business-critical transformation with a clear deadline (ECC decommissioning before 2030).

Help reshape a landscape currently constrained by:

• High complexity
• Slow change cycles due to SAP dependency

Deliver tangible outcomes such as:

• Reduced technical debt
• Faster business change
• Simplified architecture and improved performance

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