End-of-Maintenance SAP PI/PO reaches end-of-maintenance on 31 Dec 2027 — time to plan your migration.
000days 00hrs 00min 00sec
Plan migration→
That's enough runway for roughly — simple interfaces (avg. 6 h each) — complex scenarios far fewer. i How it's calculated Hours until 31 Dec 2027: — ÷ 6 h per interface: — Average for simple mappings in a team setup. Complex BPM processes, value mappings or IDoc routings take significantly longer.
AP André Pier pier-solutions.de
DE EN
SAP Integration Architect · 20+ years · Freelance since 2024

The troubleshooter
for integration problems.

When interfaces misbehave, data stops flowing, or your PI/PO migration stalls — I deliver clean, documented solutions on SAP PI/PO, Cloud Integration, Integration Suite, API Management and Event Mesh. With AI-augmented methods for faster delivery and pragmatic Clean Core orchestration.

Discuss a project → See services
Experience 20+ years
Location Germany · remote / DACH
Focus SAP Integration & GenAI
Availability On request
André Pier — SAP Integration Architect
André Pier Freelance
01Services

Focused on SAP integration — from legacy stacks to the cloud.

01 / 05

SAP PI / PO

Run, consolidate or gradually retire your on-premise integration. Dual-stack migrations, performance tuning, adapter development, monitoring.

  • Dual-Stack → AEX
  • Mapping
  • Adapter SDK
  • Monitoring
02 / 05

SAP Cloud Integration (CPI)

iFlow design, Groovy development, security materials, VSR and trace analysis. Migration of PI/PO scenarios to CPI including test and cutover strategy.

  • iFlow
  • Groovy
  • SuccessFactors
  • S/4HANA Cloud
03 / 05

SAP Integration Suite

Architecture and governance on the BTP. Capability selection, tenant setup, concepts for naming, error handling, CI/CD and transport landscapes.

  • BTP
  • Governance
  • CI/CD
  • Landschaft
04 / 05

SAP API Management

API proxies, policies, quotas, OAuth flows, developer portals. Clean separation between backend and consumer — including versioning and deprecation strategy.

  • OAuth 2.0
  • Policies
  • Dev-Portal
  • Analytics
05 / 05

SAP Event Mesh & Advanced Event Mesh

Event-driven architectures beyond request/response. Topic design, AsyncAPI, integration with S/4HANA events and non-SAP brokers. From pilot to production.

  • Topic-Design
  • AsyncAPI
  • Solace
  • S/4HANA Events
—

Second opinion & troubleshooting

You already have a team, but a scenario is spiralling out of control? I pick it up — short-term, focused, handed back documented.

  • ad-hoc
  • review
  • hands-on
02Selected projects

Reference projects from 20+ years of SAP integration architecture.

2026 →
Food industry · Mid-market · Freelance

Migration PO → Integration Suite with Integration Advisor & TPM

Migration of B2B interfaces from SAP PI to the SAP Integration Suite. Setup and enablement of SAP Integration Advisor and Trading Partner Management (TPM) following SAP best practices, including creation of MIG/MAG resources.

Integration Suite · TPM · Integration Advisor
2025 →
IT systems integrator · DACH corporate

Clean Core integration ECC ↔ S/4HANA Cloud with event-driven architecture

Architectural planning of mission-critical integration strategies between SAP ECC and S/4HANA Cloud under strict Clean Core doctrine. Resilient, scalable event-driven architecture with SAP Event Mesh and AsyncAPI contracts. SAP AIF as standard error-handling layer. AI-augmented development cuts effort by ~30%.

Event Mesh · AIF · AsyncAPI · AI Agents
2021–2025
Insurance · Swiss corporate

Migration of 800+ interfaces from SAP PO to Integration Suite

Lead architect of one of Switzerland's largest SAP integration migrations. Architectural planning and end-to-end migration of a grown landscape with over 800 interfaces. Service-oriented architecture on BTP, SAP AIF as central governance layer for S/4HANA finance interfaces with business-facing self-service error handling.

Integration Suite · AIF · BTP · Fiori
2022–2023
Public administration · Swiss federal agency

SAP Integration Suite with Apache Kafka and API Management

Design and implementation of Integration Suite scenarios with real-time streaming via Apache Kafka. Rollout of SAP API Management for secure, scalable API access. Swagger/OpenAPI standardisation, pipeline concept for iFlow consistency. Migration of existing PI interfaces to Integration Suite.

Integration Suite · Kafka · API Mgmt · OpenAPI
2017–2020
Pharma · DAX corporate

Team lead SAP CPI/PO for a global consulting organisation

Team lead for analysis, planning and development of SAP PI/CPI interfaces inside the group-wide integration shared service. Implementation of SAP NetWeaver BPM, redesign of client integration architecture for cloud migration. Coordination of offshore teams and governance.

PI · CPI · BPM · BTP

Further references (including healthcare/HL7, energy, automotive, retail) on request. Client names are disclosed only in the context of specific project discussions and under NDA.

03About

André Pier.
Integration architect by conviction.

For more than 20 years I've been working in the SAP world — from the XI ramp-up phase in 2005 to today's Integration Suite with GenAI-powered pipelines. From the start, my focus has been integration: between systems, between technologies, between generations of the SAP platform.

As both architect and pragmatic engineer, I guide enterprise clients through complex S/4HANA transformations. I orchestrate large-scale migrations from SAP PI/PO to Integration Suite, establish Clean Core strategies and design decoupled, event-driven architectures on BTP.

My clients appreciate that I don't just draw diagrams — I hand over the iFlow, the mapping, the policy, working and documented. Since 2024 I am additionally available as a freelance architect — complementing my senior role with a Swiss integration consultancy.

Working languages: German, English, French. Preferably remote with occasional on-site visits within DACH.

04Contact

Got an integration problem?
Write to me.

Write me directly — a short sketch of your scenario is enough. I usually reply within 24 hours and propose a 30-minute intro call.

Send email → Via LinkedIn

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