SAP HANA Expert

• Redesign of the company’s BI infrastructure: replacement of a fragmented landscape of manually maintained Excel solutions and CSV imports with a centralized Power BI environment using a unified data model as the company-wide single source of truth
• Consolidation of previously isolated reporting logic in a central semantic model – elimination of redundant files, manual data transfers and inconsistent metrics across departments
• Forecasting & Planning: Design and implementation of company-wide liquidity planning in Power BI – from business logic to a fully automated, data-source-driven planning model replacing the previous manual Excel process; enabling rolling forecasts and continuously up-to-date cash flow transparency for management
• Optimization of existing Power BI dashboards in terms of performance, structure and analytical value using an AI-native approach
• Analysis and improvement of the data model, including data quality analyses, data cleansing and consistent modeling using Star Schema, DAX and Power Query
• Incident & Anomaly Analysis: Identification, investigation and explanation of data anomalies, including root-cause analysis and specific recommendations for action
• AI Solution Architecture: Connecting Business Central and Power BI to LangDock via MCP (Model Context Protocol) for AI-supported data usage
• Development of a historical data layer as a basis for trend and time-series analyses
• AI-supported automation: Design and development of AI skills, agents, loops and processes for the automated analysis and interpretation of reports
• Automated reporting workflow: Setup of scheduled, automated email delivery of AI-generated analyses and recommendations to stakeholders
• Gathering and documentation of business requirements and coordination with business departments and IT as part of requirements engineering / product owner activities
• Breaking down overall requirements into clearly defined work packages and tasks
• Definition, prioritization and management of milestones throughout the entire project lifecycle

Tools: POWER BI, M365, Copilot Studio, MIRO, Microsoft Business Central, Microsoft Fabric, Claude AI, ChatGPT, LangDock, MS VS Code

• Agile transformation of the entire executive division responsible for car battery development using SAFe.
• Set up 5 Agile Release Trains and an agile portfolio.
• Prepared the transformation from a functional to a process-based organization.
• Scope of 400+ people in Germany, Europe, and China.
• Applied adapted SAFe methods.
• Managed stakeholders and advised, trained, and coached leaders (Product Management, Release Train Engineer, System Architects).
• Built the portfolio from an initial value of approx. 150 million Euro to over 1 billion Euro.
• Trained junior colleagues from a Big4 consulting firm.
• Introduced PI Plannings and quality metrics, and trained the teams.

Led the end-to-end integration and migration architecture for decommissioning SAP IS-U market communication and transitioning to Salesforce Marketing Cloud (SFMC) with E.ON IT Services — covering regulated EDIFACT market messaging, a three-phase data migration (transfer of market message inventory after cutover), redesign of market communication processes, and full GDPR and German energy-market compliance.

• Designed the three-tier target architecture (SAP IS-U → NScale B2B gateway → SFMC) processing 50,000–100,000 EDIFACT messages daily within sub-5-minute SLAs.
• Architected the three-phase data migration: 36 months of historical data, zero-loss cutover of in-flight market messages, and near-real-time CDC synchronization.
• Delivered secure, BDEW/GDPR-compliant integration (AS2/OFTP2, RFC/IDoc, REST APIs, OAuth 2.0, Azure AD, AWS S3) achieving >99.5% uptime, <0.1% migration discrepancy, and RTO <4 hours.
• Applied BPMN to model and optimize the market communication processes.

Technologies: SAP IS-U, NScale, Salesforce Marketing Cloud, EDIFACT, OAuth 2.0, Azure AD, AWS S3, BPMN, Jira, Confluence, Draw.io

Management of data protection & IT security-related projects. Adjustments to knowledge management and consulting processes.

Activities:

• Data protection consulting
• Process optimization in in-house consulting
• Interface to specialist departments, IT security, development and management

• CAD System - SolidWorks 2021
• PDM Database - HXP SolidWorks
• Product - Mobile Hydrogen Filling Station
• Processing and implementing change instructions
• Independently developing products for new applications
• Reviewing and releasing manufacturing and assembly drawings
• Providing technical support to engineering service providers
• Working closely with the Purchasing and Quality departments
• Developing and implementing cost reduction targets
• Planning and carrying out concept validations
• Independently developing proposed solutions and technical concepts for innovative ideas
• Establishing and maintaining contact with suppliers

• Managed the integrated SAP S/4HANA delivery plan for 12 BTS workstreams, including milestone, dependency, and governance management.
• Coordinated end-to-end delivery across Business, IT, and Operations, focusing on execution, readiness, and issue resolution.
• Responsible for RAID, test, cutover, and deployment management to ensure a successful go-live.
• Implemented KPI tracking, status reporting, and PMO governance to provide transparent management of performance, risks, and escalations.

• Supported monthly and annual closing activities
• Checked incoming invoices for formal and factual accuracy
• Posted incoming invoices
• Contact person for internal departments on accounting matters
• Created and maintained vendor master data
• Processed open items
• Took on additional accounting-related special tasks
• Managed the functional mailbox
• Performed payment runs

Training and knowledge transfer – Accounts Payable:

In addition to the tasks above, I was responsible for training and transferring knowledge to 8 employees of an external service provider in India who took over the accounts payable activities:

• Conducted structured training and practical guidance throughout the accounts payable process
• Trained employees in checking and posting incoming invoices, including formal and factual checks
• Taught vendor master data maintenance, open-item processing and payment runs
• Trained employees in using the functional mailbox and communicating effectively with internal departments
• Explained accounting procedures, controls and company-specific accounts payable requirements
• Conducted “Training on the Job” using practical posting cases and real business transactions
• Supported the team in independently carrying out accounts payable processes and resolving accounting questions
• Checked the quality and accuracy of work results and provided continuous feedback and coaching
• Supported the transfer of accounts payable processes to the external service provider and ensured structured knowledge transfer and an orderly handover
• Supported a smooth transition by documenting processes, clarifying responsibilities and ensuring consistent application of accounting requirements

Software: JDE, ELO, SAP Concur

SAP Data Migration Greenfield QM

In the QM module project, the focus was on migrating inspection plans and transferring Dynpro applications from the ECC system to the HANA system while adhering to development guidelines and clean code principles. The project involved the use of technologies and concepts such as ABAP Objects (ABAP OO), Clean Code practices, SMOD/CMOD enhancements, User Exits, Function Exits, BAdIs, interfaces, and classes. Writing complex reports for download and upload of change pointer information of inspection plan header.

• Private Equity owned precision grinding machines for Auto, Military & Aerospace – 1200 Employees
• Acting as Interim Group CIO / CISO consolidating Global IT back to Europe – M&A consolidation
• Managed major Security event and post event cleanup – Reporting to regulators
• Performed Vendor & Contract Management – full assessment of capabilities
• Guided Infrastructure refresh & Security Hygiene assessments

• Goal/Motivation: PAYONE urgently needs a 360° view of its customers. PAYONE has not had an overarching master data strategy so far. It is not possible to identify customers across all relevant systems.

The organization should be enabled to identify customers across all relevant systems. Establishing the basis for master data management at PAYONE

• Challenge: Due to company acquisitions, the system landscape is very heterogeneous. The company is very dynamic and burdened with many system harmonization and integration projects, meaning resource shortages and changes in project priorities repeatedly make this an almost impossible task.

Due to BaFin findings, the project has a central task and role. The initial focus is on migrating all customers, including their AML/KYC data, from the master-data-leading backend systems to Salesforce. This is intended to resolve one of the largest findings and establish the relevant ODD/EDD processes.

In addition, customer data must be harmonized in Salesforce. Some customers were entered multiple times as a result of earlier migrations. The aim is for only one customer record to remain in Salesforce and for the relevant information from the backend systems to show which products the customer uses and in which processing systems they receive Payone services.

Project: ONE Customer

Budget: 1,5 Mio. €

Team: 10/30 employees (full-time/part-time); 4 vendors/providers

Integration: 8 (subsystems/interfaces)

Applications: Salesforce; SAP S4/HANA; in-house developments

Tools: MS Office; Jira, Confluence, Sharepoint

Methods: Hands-on; Agile (SAFe); Prince2

• Act as project manager and first point of contact on the project side
• Coordinate with teams to ensure required information is available for project completion
• Ensure both general contractors and internal teams store information correctly
• Monitor compliance with the project checklist and follow-up
• Plan and execute the project plan
• Perform budget and project calculations based on expected price calculations and estimated effort
• Participate in project meetings
• Review progress of Actoom (external partner handling data)
• Answer queries from Actoom regarding data migrations to retrieve data from internal partners or general contractors
• Contact subcontractors to obtain missing information
• Communicate with insolvent companies to obtain missing information

AI-supported document processing and inventory management integration

Design and development of an AI-supported application for the automated processing of delivery and invoice documents, connected to SelectLine ERP. Documents are analyzed using AI, matched with orders and line items, and prepared for posting goods receipts.

IMPACT:

• Automated extraction of structured order, delivery and invoice data from PDF and image documents
• Automatic and manual mapping of documents to orders and order line items
• Integration with SelectLine ERP for order import, status synchronization and goods receipt postings
• Traceable processing through separate analysis, mapping and posting processes as well as technical logging
• Development of a containerized end-to-end architecture with AI analysis, workflow automation and relational data storage

KEYWORDS: AI, document analysis, OpenAI, n8n, SelectLine ERP, FastAPI, Python, JavaScript, MariaDB, Docker, REST API, PDF, OCR, mapping, inventory management, goods receipt, workflow automation

• SAP S/4HANA upgrade from Release 2021 to 2025 and FI/CO transformation as part of a new TOM. Four streams and two SAP service providers; management during ongoing operations.

• Overall responsibility for time, quality and budget as well as cross-stream coordination of the four streams

• Coordination of process streams, business functions and SAP service providers

• Establishment and management of governance, planning, risks, dependencies, resources and escalations

• Provider management, regular management reporting, and preparation and execution of project and Steering Committee meetings

• Responsibility as Test Manager for test strategy, test planning, UAT, defect management and acceptance

• Result: Successful preparation for Go-live on 28.09.2026 during ongoing operations; quality and the planned absence of production interruptions ensured. Project governance established and positive feedback from management and stakeholders.