SAP Functional Architect - Plan to Produce

Oldcastle Infrastructure, a CRH company, is the leading provider of utility infrastructure solutions for the water, energy, and communications markets throughout North America. With more than 80 manufacturing facilities and over 4,000 employees, we lead the industry with innovation and a safety‑first mindset.

The SAP Functional Architect – Plan‑to‑Produce drives the architecture of manufacturing planning and execution processes within SAP, ensuring that production workflows from demand planning and MRP through shop‑floor execution operate with high performance, accuracy, and reliability. As the design owner for PTC, the Architect defines production models, master data frameworks, capacity planning parameters, and integration logic with cross‑functional modules and or systems where required.

The Architect works closely with the Product Owner to translate business requirements into robust, scalable designs that uphold clean‑core principles and support multi‑plant operations. This role plays a key part in enabling production efficiency, operational visibility, and continuous improvement through well‑architected processes, testing frameworks, and stable deployment practices.

• This role will work hybrid out of our office in the Sandy Springs, GA area.

• Own the PTP target state for all plants (MTS, MTO, ETO or Repetitive, as applicable) using standard SAP PP capabilities, document scope, constraints, and variants.
• Enforce Clean Core: standard first, side‑by‑side only when strictly necessary; prohibit invasive modifications (user exits, Z‑tables) that duplicate standard.
• Define reference patterns for PTP (e.g., production order vs. process order usage, repetitive manufacturing fit, Kanban), including triggering, confirmations, and backflush models.
• Establish NFR guardrails (e.g., MRP runtime windows, posting latency, job concurrency) and operability standards (logging, monitoring, error handling) within S/4
  
  HANA.

• Govern BOMs, Routings, Work Centers, Production Versions.
• Standardize planning parameters (lot sizes, safety stock, planning strategies, lead times, scheduling margins) by product family/plant.
• Define material master rules for PTP‑relevant views and ensure alignment with PTC, OTC and RTP.

• Define role/authorization needs for planners, schedulers, supervisors, and operators; enforce SoD around master data vs. execution.
• Ensure auditability for order changes, confirmations, yield/scrap edits, and routings/BOMs; maintain a complete traceability chain.

• Define E2E scenario packs:
  Demand → MRP → Order → GI → Confirmation → GR → QM → FI/CO postings (incl. rework/scrap/returns).
• Provide SIT/UAT scripts for high‑volume flows, constraints (finite capacity where used), and edge cases (shortages, substitutions, partials).

• Establish dress rehearsal criteria (mock MRP, pilot orders, stock adjustments) and production validation steps (first‑article checks, day‑1 throughput).
• Set hypercare KPIs.
• Drive root‑cause and permanent fixes.

• Prioritize enablers that increase throughput, schedule adherence, and yield; co‑own decisions impacting lead times and capacity.

• End‑to‑end process architecture for the functional domain.
• SAP Target State Design covering standard vs. extensions.
• Functional Blueprint Document (process flows, variants, decision logs).
• Cross‑module architecture with OTC/PTC/RTP integration points.
• Integration contracts (API/IDoc mapping, sequencing, error handling).
• Non‑Functional Requirements (performance, security, auditability).

• WRICEF inventory + complexity scoring + dependency mapping.
• Approved WRICEF Functional Specifications.
• Prototype configurations, demo scripts, and design validation materials.

• Master data standards (materials/BOMs/Routings/PVs/Work Centers).
• Support to conversion mapping documents (legacy → S/4
  
  HANA).
• Cutover data load…