SAP MM Experts in Düsseldorf

Project: Introduction of statutory-compliant electronic invoicing (outbound, Germany) in SAP for an international technology group.

• Project management: Planning, steering and reporting of the E-Invoicing outbound rollout across all affected business areas, including budget and resource coordination.
• UAT: Structured user acceptance test with key users per business area, test cases per invoice scenario, and consolidated test results for decision making.
• Defect management: Handover and tracking of defects in Jira, including validation of the generated invoices against the statutory schemas.
• Cutover, go-live and hypercare: Readiness checks and cutover planning aligned with the statutory deadlines, coordination of go-live and stabilization during hypercare.
• Stakeholder management and reporting: Alignment with Finance, Tax, business departments and IT, preparation of status reports and decision papers, and consistent follow-up of open items.
• Change management and documentation: Communicated process changes to the business departments, enabled key users, and created process and compliance documentation to ensure traceability and audit readiness.

• Creation of detailed concepts for all relevant GTS modules (compliance, pricing, customs clearance, Intrastat, preferences)
• Planning and conducting workshops, including scheduling and documentation
• Development and consulting of the organisational structure and its master data
• Setup and customisation of compliance functions: sanctions list review, embargo, legal control, US re-export
• Uploading and maintaining sanction and commodity lists
• Implementation and validation of integration tests
• Setup and customisation of the modules: pricing (including uploading of customs tariff numbers and STAWN data), customs clearance (including application for test operation with customs), Intrastat and preferences (including preference calculation and LLEs)
• Development and presentation of prototypes
• Derivation of insights for the final concept

• 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

• Supporting the DevOps team in Terraform-managed, multi-region AWS infrastructure to achieve environment parity.
• Developed end-to-end CI/CD pipelines using AWS CodePipeline, CodeBuild, and CodeDeploy, automating the build and deployment.
• Maintained pre- and post-deployment scripts to automate critical tasks such as database schema migrations and environment sanity checks.
• Implemented CI/CD flow specifically for hotfixes via separate Git branches, managing back-merge activities from feature branches to release branches to ensure code integrity through automated conflict resolution.
• Deployed a dedicated, lightweight sanity check application hosted cost-effectively on Azure Container Apps to run automated health and basic functional checks as a post-deployment activity triggered via pipeline.
• Investigated production incidents through code changes and AWS CloudWatch logs.
• Coordinated integration of Dynatrace APM and its APIs for monitoring purposes.
• Full stack QA strategist for a high-traffic e-commerce platform built on a layered architecture for the back-end testing of core platform services, especially the order management system in Zed and Glue layers.
• Managed automation activities, testing process, and refactoring practices.
• Responsible for framework migrations, setup, and training for new automation frameworks.
• Promoted a shift-left approach within the QA team and created the test concept.
• Participated in meetings with IT managers, business owners, product owners, and team members.
• Designed and implemented contract testing to validate API schema compatibility between the order management system and the Zed and Glue layers, reducing production-relevant breaking changes by approximately 3%.
• Led the migration to a multi-environment framework that enabled test execution across 4 country configurations from a single codebase.
• Integrated automated unit and functional tests directly into the GitLab CI/CD pipeline, reducing pipeline runtime by 32%.
• Coached and trained 5 QA engineers across Germany and Hungary in test automation, framework architecture, and best practices.
• Architected a layered backend test automation framework separating business logic, API request builders, and the database layer.
• Piloted AI-assisted testing with Playwright Agents, the Playwright MCP Server, and GitHub Copilot for automated test generation, execution, and self-healing Playwright scripts.

• SAP ERP/ECC, SAP S/4 Hana
• Analysis and documentation of SAP FI/CO, PSM, PSCD customizing
• Analysis, consulting and documentation of S/4 Hana apps for defining and executing statutory reports
• Clarification of the prerequisites for using S/4 Hana apps to define and execute statutory reports
• Analysis and documentation of customizing for in-house developments
• Consulting on the integration of SAP FI/CO as well as PSM, PSM-FM (Funds Management), Contract Accounts Receivable and Payable (PSCD)
• Consulting and documentation of customizing adjustments in SAP FI/CO, PSM, PSM-FM, PSCD when introducing new company codes and other organizational structures
• Consulting and documentation of necessary process adjustments

• Support in fit-gap analysis for three RM-CA systems focusing on sub-ledger reconciliation, dunning, and collections processes.
• Stakeholder management in international teams (business colleagues, IT colleagues, and external partners).
• Escalation and risk management (PM).
• Cost and budget calculation (PM).
• Support in shaping the strategic direction of the global collections system.
• Resolving technical challenges for the central collections system (multi-company operation).
• High-level design of the central AR system with focus on scalability and process harmonization.

• Support and consulting for the integration of SAP ECC into an SAP S/4HANA system, retirement of legacy systems, implementation, and process optimization in the new harmonized system
• Project implementation of S/4HANA Cloud Private & Public Sales & Services with SAP SCM/OTC/MM/LE/CS/PS, S/4HANA Cloud, CPI, BTP, EDI, IDOC, ABAP, User-Exit, SolMan, ITIL, SAP Cloud AL
• Customizing and optimization in OTC and MM, including condition maintenance, document type and item category extensions, integration with FI/CO, scheduling agreement configuration, material master and purchasing info record maintenance, release procedures, message control, and master data quality
• Ensuring integration of PTP with FI/CO, SD, and WM, process analysis, and efficiency improvement for the S/4HANA environment
• Process modeling in Signavio, workshops, and trainings
• 2nd & 3rd level support in OTC, MM, CS, PS, C4C Sales & Services, GTS, and MDG: incident and change tickets, feasibility analyses, service management, embedded analytics, customizing, tests, documentation, training, debugging, IDOC/EDI monitoring
• SAP S/4HANA migration: data migration, system harmonization, global rollouts, and template development
• ABAP development and optimization: reports, dialog programs, user exits, IDOC/EDI monitoring

Founded in 1968, MLD now employs over 350 people at various locations in and around Düsseldorf. The academic team, consisting of 17 medical specialists, colleagues from the fields of biology, chemistry, pharmacy, drinking water hygiene, and medical residents, provides reliable laboratory medicine support to more than 1,500 resident physicians and more than 30 hospitals with over 5,000 beds in the Düsseldorf, Cologne, and Lower Rhine regions. It is a subsidiary of Sonic Healthcare Group, headquartered in Sydney, Australia. Group: 37,000 employees, direct reporting line: Managing Director

Responsibilities:

• Functional and disciplinary responsibility for 16 employees, subledgers, general ledger, controlling, IT, purchasing, HR
• Monthly reporting according to IFRS, consolidation of several domestic subsidiaries
• Preparation of monthly, quarterly, and annual financial statements of the companies according to IFRS and annual financial statements according to HGB for several companies, as well as preparation for and support during annual audits
• Budgeting, forecast
• Accounting treatment of company formations, liquidations, and transformations
• Main contact person for auditors, tax advisors, and tax authorities.

• 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.

• Responsibility for group-wide financial management with a focus on management, PE, and lender reporting.
• Focus on an integrated financial model (P&L, balance sheet, cash flow), robust liquidity and covenant management, and preparation of decision-ready materials for financiers, auditors, and rating stakeholders.
• Establishment of reporting standards, data logic, and closing routines for high-frequency scalability.
• Further development of an integrated financial model (P&L/BS/CF), including scenario capabilities, sensitivities, and driver-based forecasting logic.
• Design and management of a rolling liquidity plan (short-/mid-term), including working capital mechanisms and financing instruments.
• Preparation and quality assurance of lender reporting, including covenant calculations, bridge analyses, and variance explanations.
• Support for the CFO agenda in financier and stakeholder communication (Q&A, documentation logic, key messages, data consistency).
• Coordination and content input for rating- and financing-related deliverables (e.g., presentations, data rooms, management commentary).
• Management of IFRS/accounting topics (e.g., IFRS 16 lease logic, accrual and reconciliation concepts) to ensure reporting and audit readiness.
• Standardization of reporting structures, templates, and KPI definitions across entities to increase transparency, comparability, and speed.

• Carve-out of HR, SuccessFactors, PeopleHub, Concur, RLP and interface systems to an external international service provider

• Structuring and handling identified high-risk topics for the executive board.
• Handling various ad-hoc topics as part of the company-wide restructuring, especially in the finance, controlling, and procurement departments.
• Developing strategic concepts to increase the level of digitization in central controlling, finance, procurement, and logistics functions.
• Stakeholder management (supervisory board, works council, city of Düsseldorf).
• Coordinating and conducting due diligence as well as subsequent purchase price negotiations related to the land acquisition for a new depot (volume >80 million EUR).
• Participation as a permanent member in various steering committees.

• Experience in SAP EWM processes and ABAP development
• Configured PPF for output management in EWM and YM, worked with BOPF in TM and YM, configured Fiori Launchpad with roles, spaces, and pages, and developed UI5 applications
• Developed a Fiori Elements app using the List Report, Object Page, Overview Page, and Analytical List Page frameworks with CDS views, AMDP on BAS, created a RAP app, and a report for data transfer to external Oracle systems

• Further development and optimization of the PIM system (e.g. data modeling, interfaces, user experience)
• Analysis, structuring, and professional evaluation of business requirements in close coordination with business units and stakeholders
• Translating business requirements into functional and technical concepts (business & solution design)
• Designing and further developing the target PIM architecture including data models, object structures, versioning, and lifecycle concepts
• Defining interfaces, integration concepts, and data flows between PIM, eCommerce, ERP, and other systems
• Quality assurance in close collaboration with business units and the development team
• Effort estimations for analysis, design, and testing activities
• Agile, Scrum, 4APortal, SAP ERP, SAP eCommerce (Hybris)