SAP PI/PO Experts in Germany

AI telephone assistant platform

Claude Code, Google AI Studio, Python, LLM / Voice-AI, PostgreSQL

• Conception and hands-on development of an AI-supported telephone assistant platform (voice AI / LLM) – from idea and architecture to MVP/product.
• Built agentic workflows and full automations with Claude Code and Google AI Studio.
• Also delivered AI-supported work in client engagements: used Claude Code for governance documentation, requirement drafts, and automations.

• Designed and implemented enhancements in SAP BW on HANA 7.5 in the context of CRM migration and S/4HANA and BW/4HANA transformation programs
• Migrated SAPI data sources to the ODP framework as part of the S/4HANA migration
• Delivered SAP ECC data to Snowflake using BW data models and Calculation Views for Power BI analytics
• Integrated SAP and non-SAP data sources (including MS Dynamics)
• Improved reporting transparency through consolidated data models
• Optimized data loading processes for FI-CO data sources, significantly improving load times and system performance

• Gathering, evaluating, and prioritizing strategic demands from the Electronics and Power Systems business units
• Supporting the digitalization of business processes for Electronics and Power Systems
• Process digitalization and IT architecture planning, including network infrastructure
• Reviewing demands with regard to existing solutions in coordination with IT and business departments
• Designing and implementing possible business architectures
• Planning implementation projects, in particular supporting import control through the introduction of SAP GTS
• Acting as the interface between business departments and IT
• Creating and implementing concepts for IT security, compliance, data protection, and the protection of classified information
• Conducting workshops, process analyses, and training sessions
• Stakeholder management and change management
• Technologies used: SAP GTS, SAP MM, SAP SD, MS Office 2016, MS SharePoint, ServiceNow, SharePoint

• Integrated LangChain middleware between AEM and SAP PIM system
• Developed a FastAPI interface for system communication
• Implemented vector embeddings for semantic product search
• Evaluated LLM models (Vertex AI/Gemini, LM Studio, Hugging Face, OpenAI) for product analysis
• Developed an AEM component to display product recommendations and integrated the recommendation API into the AEM authoring process
• Designed and implemented Pinecone vector database for product embeddings
• Optimized response times and caching strategies
• Evaluated Vertex AI Studio for LLM testing and prompt workflows
• Implemented secure API routing and access control for AI components via FastAPI and gateway validation

• SAP S/4HANA implementation
• Agile project & program management
• SAP S/4HANA main contact for business support for planning phase (Signavio, SolMan, Process Design Concepts)

• Executed post-carve-out stabilization, system consolidation and cybersecurity uplift. Re-assessed system landscape and assets and designed new IT strategy for future. Implemented new IT operating model focusing on product-centric organization and re-internalization of critical resources.
• Successfully designed new IT operating model of the company, based on massive reduction of external dependencies, insourcing of key positions and upskilling of employees.
• Massive reduction of IT cost in the first three years (-40m$), bringing IT spend level below Gartner industry benchmark (1.27%).
• Introduced new product-centric organization based on fusion teams between business and IT across the company.
• Administered implementation of corporate-wide IT/OT cybersecurity program with more than 60 projects.
• Continuous improvement of enterprise IT/OT cybersecurity maturity level with significant increase in the first two years (CMMI >3.5, C2M2 >2.5).
• Governed successful implementation of the business transformation program within IT area by overachieving the savings target by $8m.
• Initiated and created new cloud-based data management platform based on best-in-class technology.
• Implemented first company-wide Microsoft Copilot AI program based on various business cases, leveraging GenAI and AgenticAI.

• SAP S/4 HANA PS consulting in engineering/manufacturing
• Customizing MM/PS with integration into SAP CO/MM/SD/PM
• Migration of master data and processes

• Responsibility for the specialist department
• Effective stakeholder management
• Management and prioritization of the backlog
• Resource and capacity planning
• Risk management
• Cost calculation and budget control
• Compliance with security guidelines and data protection regulations in a high-security environment (Bank regulations)
• Creation and monitoring of project timelines
• Planning and execution of workshops as well as the creation of user manuals
• Development and coordination of architecture maps with service providers and internal IT
• Creation and tracking of milestone plans
• Recording, analysis, and documentation of defects, including retesting until final approval for launch
• Coordination and execution of penetration tests
• Organization and management of User Acceptance Tests (UAT)
• Definition of Go / No-Go criteria for the launch
• Collaboration and organization of multinational teams

• Architecture and implementation of a fully digitalized closing flow for managing securities contracts within the DVAG infrastructure. The platform aims for maximum user-friendliness, modular extensibility and compliant handling of sensitive data.

• Implementation of a reactive UI structure with a focus on user guidance & accessibility.

• Dynamic control of form and closing processes including validation logic.

• Reactive state management via SignalStore (signals + selective effects).

• UX optimization through adaptive components and Playwright-based UI tests.

• Backend modularization to connect existing sales and contract logic.

• API stability and DTO design according to Clean Architecture principles.

• Collaboration with domain teams to define technical contracts and service boundaries.

• Management with GitHub.

• Unit tests with Jest, E2E tests with Playwright.

• Code reviews, CI-integrated test execution, iterative refactorings.

• Ensuring high coverage and UI stability in the closing flow.

• Technologies: Angular 18, RxJS, SignalStore, HTML5, SCSS, Spring Boot, Kotlin, REST, OAuth2, Jest, Playwright, Clean Architecture.

• ABAP developments for rku.it GmbH, Agena GmbH, Koenig & Bauer AG, Salzgitter AG, duagon AG
• Redesigned material configuration data mass maintenance Fiori app for Siemens AG Engineering to resolve system resource issues
• Conducted S4Hana ABAP code remediation, ATC checks, and implemented ABAP parallel processing for Voestalpine AG

• CRM process and feature consulting
• AI infusion workshops to introduce AI apps for critical business processes
• Prototyping – Vibe coding with Lovable
• Development of several apps for global bid management in the CPQ, Salesforce, and SAP S/4HANA environment
• Requirements and process management
• Introduction of a new data governance model
• AI infusion – supporting apps and business processes with AI applications
• Portfolio management of AI ideas: identifying and selecting AI projects in bid management
• Prototyping AI projects with Lovable.dev
• Building an AI data foundation in Snowflake
• Blueprint for different business units and global rollout
• An agile prototype-first approach with design thinking and vibe coding to prototype all applications
• Presentation at a global conference on using AI in business and validating ideas with design thinking & vibe coding
• AI infusion workshops at global conferences for prototyping ideas with business stakeholders

• Architecture of SAP landscapes
• Business consulting in the SAP PI/ PO/ CPI/ API Management environment
• Basis administration
• Analysis, planning, implementation and maintenance of interfaces
• EDI connection of customers, suppliers and freight forwarders
• Development of eBusiness solutions
• Project management in the SAP PI/ PO/ CPI environment
• Data transfer from third-party systems
• Service management / vendor coordination
• Team leadership
• Third-level support for SAP PI/ PO/ CPI
• SAP interfaces SOAP, REST, JDBC, OData, IDOC, SFTP

• Further development and stabilization of existing IT solutions and interfaces to SAP, Salesforce.com, PIM (master data) and DAM (digital asset management)
• Project management / Business Relationship Manager / service management
• Communication between business units and IT
• Managing internal and external resources in implementing enhancements
• Coordinating integration efforts with internal and external partners
• Reviewing functional specifications

• Responsible for the end-to-end application and integration architecture of the Hamburg S-Bahn maintenance digitization program. A highlight is the introduction of robots and fixed camera towers to automate vehicle inspections, allowing AI image algorithms to assess train conditions during operation.
• Deutsche Bahn has one of the largest SAP PM implementations worldwide, which is a key component of this digitization.