Senior SAP gATP/AATP Functional Architect

Senior SAP gATP/AATP Functional Architect - Remote
Here at RED, we are looking for an Senior SAP gATP/AATP Functional Architect - to start on an S/4 HANA implementation project for one of our global end clients.
The consultant is expected to start October 2026 and for an initial 6 months contract with a possibility of extension. The project will be a remote position with occasional travel for workshops, go lives etc
Role Purpose

As a Senior Functional Architect, you will be a driving force behind our migration to SAP S/4HANA, taking ownership of the functional design and architectural vision for order fulfilment and supply chain planning. You will bridge complex business planning requirements with technical implementation, acting as the primary subject matter expert (SME) for Advanced Available-to-Promise (AATP), Product Allocation, Alternative-Based Confirmation, and Advanced Intercompany scenarios.

gATP / AATP Expertise: Proven, deep functional and architectural experience in SAP gATP (APO) and a strong focus on S/4HANA Advanced Available-to-Promise (AATP). Experience with S/4HANA migrations is highly expected.

Process Knowledge: Deep understanding of Sales & Distribution (SD) process flows and logistics integration points.

Planning Background: Solid background in Supply Chain Planning concepts (demand planning, supply planning, capacity constraints).

Niche Knowledge Areas: Demonstrated experience configuring Alternative-Based Confirmation (ABC), Product Allocation & Rationing, Advanced Scheduling, and Advanced Intercompany (ICO).

Technical/Development Acumen: While this is a functional architect role, a strong background in development/programming is required to effectively design solutions, read code, and direct ABAP/extensibility efforts.

Key Responsibilities
S/4HANA Migration & Architectural Leadership

Migration Strategy: Play a pivotal role in the transition from legacy SAP APO-gATP to SAP S/4HANA AATP, defining the target functional architecture and implementation roadmap.

Solution Architecture: Act as the functional lead, prioritizing an "architectural vision" over hands-on coding to design robust, scalable, and future-proof order fulfillment processes.

Custom Development Guidance: Leverage your strong technical/programming background to translate complex business needs into precise functional specifications. Guide and collaborate closely with development teams on custom enhancements (e.g., ABAP, BAdIs, extensions) where standard logic is insufficient.

Kind regards, Mike