Mathias Clausen-Business Transformation Lead | SAP S/4HANA Finance
Check rate
Experience
Subproject lead data migration and quality assurance
Commerzbank
Migration of financial data from Microsoft Dynamics to SAP ECC for eleven companies, as well as from SAP S/4HANA to SAP ECC for one additional company. At the same time, an interface from an operational leasing tool to SAP S/4HANA had to be tested from a business perspective and aligned in an audit-proof way.
Lead and plan the migration work packages, create the migration concept for accounts payable and accounts receivable with active customer-vendor integration, set up the reconciliation and QA method, test management, cutover planning, and audit-proof project documentation.
SAP/business focus: SAP S/4HANA, SAP ECC, FI, Business Partner/CVI, Finance Data Migration, Reconciliation, Test Management, Cutover
- Traceable and audit-proof migration of multiple companies with clear reconciliation logic, strong QA evidence, and controlled cutover.
FI subproject lead SAP S/4HANA
Stadtwerke Heidelberg
Greenfield implementation of SAP S/4HANA Finance and Asset Accounting for 17 company codes based on SAP Best Practices, including data migration, document splitting, and consistent use of Fiori.
FI/FI-AA subproject lead, fit-to-standard and business concept, management of migration, testing and cutover, as well as use of the Migration Cockpit with staging tables and table transfer. Design of document splitting to derive profit center and segment from cost center and WBS element.
SAP/business focus: SAP S/4HANA Finance, FI, FI-AA, Migration Cockpit, Document Splitting, Profit Center, Segment, Fiori, SAP Solution Manager
- Fit-to-standard-based finance architecture for 17 company codes, a solid migration and test structure, and a consistent derivation of profit center and segment.
Project lead and Scrum Product Owner SAP FI/CO
ista SE
Several years of further development of the SAP finance landscape: speeding up the group close, integrating acquired companies in Belgium, France, and Poland, and initiating the SAP S/4HANA transformation.
Lead international finance projects, business process analysis, concept design, migration, test management, and audit-compliant documentation. Development of the S/4HANA implementation strategy, initiation and prototype implementation, as well as business prioritization of the SAP FI/CO backlog as Product Owner.
SAP/business focus: SAP FI/CO, SAP S/4HANA, international rollouts, process optimization, data migration, test management, Scrum Product Ownership
- Faster and more harmonized finance processes, successful integration of acquired companies, and a solid foundation for the S/4HANA transformation.
Project lead New GL and CoA/CA conversion
Commerz Real
Transition from classic general ledger to SAP New GL while harmonizing and merging existing charts of accounts and controlling areas in cooperation with SAP SLO.
Project management and planning, analysis of finance processes, design and customizing of the target architecture, management of test management, and documentation for internal and external audit.
SAP/business focus: SAP New GL, Parallel Accounting, Ledger, chart of accounts harmonization, controlling areas, SAP SLO, test management
- Harmonized finance structures as a basis for parallel accounting, transparent control, and audit-proof further development of the system landscape.
Project lead system implementation France
MAN Financial Services / Volkswagen Financial Services
Replacement of an existing system criticized by the Banque de France with the SAP-based leasing solution LIS@ in connection with SAP Finance.
Overall project management from project preparation and GAP analysis through business concept, implementation, and integration testing to go-live, support, and ITIL-compliant handover to operations. Building the project organization, planning, resource and budget control, and steering committee communication.
SAP/business focus: SAP ERP Finance, LIS@, fit/gap, integration test, go-live, ITIL, international project management
- Replacement of the criticized legacy system in France and a stable go-live of a SAP-based leasing and finance solution.
Project Lead International Carve-out
KION Financial Services
Set up separate financial service companies in Germany, France, Italy, Spain, and the UK for independent accounting of the on-balance-sheet business. Introduced LIS@ and SAP Finance based on a cross-country template.
Defined the rollout template and country variants, led the GAP analyses, implementation, integration testing, go-live, and ITIL handover. Managed sub-project leads, resources, budget, risks, and international decision-making bodies.
SAP/functional focus: SAP ERP Finance, LIS@, carve-out, international template, country rollout, fit/gap, integration test, ITIL
- Unified rollout template for five countries with controlled handling of local requirements and a reliable handover into regular operations.
Project Lead International SAP Rollout
Senvion / REpower
Carve-out of service and logistics processes into international subsidiaries and, at the same time, realignment of accounting for IFRS and HGB on SAP ECC 6.0.
Development of the template-based rollout approach and the Business Process Masterlist, setup of the project organization and work packages as well as planning and initiation of the rollout. On the finance side, focus on New GL, profit center, segment, document splitting, and cost of sales accounting.
SAP/functional focus: SAP ECC 6.0, New GL, IFRS/HGB, profit center, segment, document splitting, cost of sales accounting, international rollout template
- Scalable international rollout approach with a standardized process base and a finance architecture for IFRS and HGB.
Design of an IT Implementation Strategy
VR Leasing
Development of a robust approach for introducing a new integrated IT and SAP solution in a complex leasing environment.
Structuring the implementation strategy, deriving the methodical approach, and preparing the later implementation in the SAP large project.
SAP/functional focus: IT strategy, SAP implementation planning, target architecture, project initiation, leasing
- Integrated finance target architecture with New GL, subledgers, business partner, loan management, middleware connection, and controlled transition to operations.
Introduction of SAP Group Consolidation
Sasol Germany
Introduction of SAP-supported group consolidation for the German organization.
Functional design and support for the introduction of the consolidation solution based on the existing accounting and reporting requirements.
SAP/functional focus: SAP group consolidation, finance design, reporting
- SAP-supported consolidation processes as a consistent basis for group closing and reporting.
Redesign of Group Consolidation
Hamburger Sparkasse (Haspa)
Realignment of an existing consolidation solution to changing business and organizational requirements.
Analysis of the starting point and functional design of the redesign of group consolidation.
SAP/functional focus: SAP group consolidation, redesign, finance processes, reporting
- Functionally realigned consolidation solution for changing accounting and reporting requirements.
Introduction of SAP Group Consolidation
IKB Bank
Setup of SAP-based group consolidation in a regulated financial services environment.
Functional design and introduction of the consolidation solution, as well as alignment with relevant accounting and reporting requirements.
SAP / core focus areas: SAP group consolidation, financial services, group consolidation, reporting
- Reliable SAP-based group consolidation for a regulated financial services environment.
Project Lead SAP Introduction in Accounting
IKB Leasing
Introduction of an SAP-based accounting solution for the leasing business.
Project leadership and coordination of the functional finance design as well as the introduction into the organization.
SAP / core focus areas: SAP Finance, leasing, project leadership, system introduction
- Professionalized European service area with transparent SLAs and KPIs, clear escalation paths, and economically manageable service delivery.
Industry Experience
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Experienced in Utilities, Banking and Finance, Information Technology, Real Estate, Energy, and Manufacturing.
Business Area Experience
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Experienced in Finance, Information Technology, Project Management, Accounting, Audit, and Quality Assurance.
Summary
I support companies with complex business transformations, with a focus on SAP S/4HANA Finance. My focus is on business process reengineering, fit-to-standard, governance, audit readiness, and finance data migrations that are safe from an audit perspective.
The goal is not just the technical introduction of SAP, but above all the lasting improvement of business processes.
Business transformation starts with the business process. SAP is the enabler. Standardization, governance, and early user feedback form the basis of successful transformation programs.
Skills
Working And Transformation Principles
Standard First
Business Value Before Custom Development
Early User Feedback Reduces Project Risks
Governance Creates Transparency
Use The Best Of Classical And Agile Methods
Core Competencies
Business Transformation
Sap S/4hana Finance
International Rollouts
Finance Data Migration
Finance Architecture & Governance
Audit Readiness
Program And Project Management
Sap Expertise
General Ledger
Accounts Payable
Accounts Receivable
Asset Accounting
Cost Center Accounting
Profit Center Accounting
Document Splitting
Parallel Accounting
Business Partner (Cvi)
Sap Group Consolidation
Sap Solution Manager
Tools & Project Platforms
Process Modeling: Sap Signavio, Aris, Microsoft Visio
It Architecture: Leanix
Project & Portfolio Management: Jira, Sap Solution Manager, Microsoft Project, Merlin Project
Test Management: Qtest, Jira, Sap Solution Manager
Documentation & Collaboration: Confluence, Miro, Microsoft Teams, Sharepoint
Productivity & Data Analysis: Microsoft Excel (Advanced), Microsoft Powerpoint, Microsoft Word, Microsoft Access
Languages
Education
Diploma in Business Administration · Business administration
Certifications & licenses
Accelerated SAP (ASAP) Consultant
Statistics
Experience
Global Experience
Expertise
Qualifications
Profile
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