SAP S/4HANA Experts in Düsseldorf

• 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

• Responsible for infrastructure, operations, network and VoIP, security, quality assurance, as well as asset management and business continuity
• Planning and implementation of all requirements related to NIS 2.0
• Responsible for application development
• Company-wide implementation of SAP S/4Hana and leading development of new business processes, incl. cut-over planning
• Digital transformation and cultural transformation toward a "doer mentality"
• Realignment of infrastructure (hybrid)
• Restructuring of the organization with partial outsourcing
• Management of four direct reports with a total of 25 internal and external employees
• Budget responsibility of up to €25 million

• 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.

• Industries: Energy, Telecommunications, Manufacturing
• Transformation & Change: Supported complex IT and digital transformation programs as Scrum Master, Agile Coach, Change Manager and RTE Consultant at Siemens Energy (global SAFe rollout), E.ON (sales technology platform), Schneider Electric (S/4HANA transformation DACH) and Vodafone (Operational Excellence)
• Agile Roles: Scrum Master, Agile Coach, Product Owner, Business Analyst, RTE Consultant in cross-functional and scaled teams (SAFe, Scrum, Spotify Model)
• Procurement Excellence: Strategic purchasing consulting with a focus on cost optimization, supplier management, digitalization and organizational development, including building supplier scorecard models, AI-supported procurement approaches and process automation in purchasing
• Managed functional leadership of interdisciplinary project teams of up to 12 people in national and international settings
• Successful launch of several global ARTs at Siemens Energy with improved coordination across sites
• Increased change acceptance and established communication structures in the S/4HANA program at Schneider Electric
• Introduced agile methods, OKR frameworks and KPI dashboards at E.ON, increasing velocity and transparency
• Reduced purchasing costs through strategic sourcing and supplier optimization
• Implemented process innovations in close cooperation with IT and business teams

• -- ENGLISH Version (Deutsche Version unten) ---

Experience

• Ex-BCG Platinion: 14 years as Manager & Chief IT Architect, leading large-scale IT transformations in complex group structures
• 20+ years of C-level consulting across AI/IT strategy, enterprise architecture, IT organization, transformation, M&A due diligence, project recovery, and interim management
• IT leadership experience with cross-functional, intercultural teams of up to 100+ people
• Hands-on background in software engineering, IT architecture, and project management
• Fortune Europe 500 focus; numerous international projects; SME and start-up experience

Core services:

• IT strategy, enterprise architecture (EAM), target architectures and roadmaps
• PE/M&A/carve-out IT/tech due diligence, asset valuation, cost estimation
• GenAI transformation, process automation, and AI governance
• IT reorganization, target operating model (TOM), agile transformation
• IT governance, development and ITSM process optimization (BizDevOps, SAFe)
• Review and recovery of critical large-scale IT programs
• Planning and steering of transformation programs and IT project portfolios
• IT vendor and platform selection (RfI / RfP)
• Coaching & Interim management

Industries (selection): Insurance, financial services & banking, energy & utilities, telecommunications, retail & consumer goods, logistics, media, industry & engineering, healthcare, professional services

Projects (selection):

• M&A Buy-side IT/Tech Due Diligence of an Acquisition in the Energy Sector (Utility, Smart Home) — AI-augmented with Anthropic Claude

• AI Initiative for LLM-Based Optimisation and Automation of Sales and Billing Processes

• Interim management Enterprise Architecture & group target architecture/roadmap development (METRO)

• Reorganization: Design and introduction of agile IT target operating model at international wholesale group (METRO)

• Design and implementation of agile BizDevOps target operating model (E.ON Grid Solutions)

• Platform/vendor selection for renewal of core insurance solution of start-up (ELEMENT Insurance)

• Establishment of project assurance capability and review/recovery of critical transformation projects (ERGO)

• Enterprise architecture management and development of divisional/solution architectures (Deutsche Post DHL)

• Strategic pricing architecture decisions in digital sales application landscape (E.ON Energie)

• IT due diligence: Architecture evaluation and monetary valuation of IT assets (ProSiebenSAT.1 Media)

• Interim management of group-wide security/compliance programme (ERGO)

• Enabling an application landscape for different sales organizations and product structures (E.ON Energie)

• Realignment of business/IT strategy and InsurTech platform selection (RfI, RfP) (nexible, ERGO Digital Ventures)

• Stabilization/optimization of an agile/SAFe business/IT DevOps landscape transformation (Lufthansa AirPlus)

• Process optimization and design/management of digitization and robotics introduction in power plants (RWE Nuclear)

• BSS target architecture development for fixed/mobile networks convergence (Deutsche Telekom)

• Optimization of IT organization model and methodology in application development and testing (Deutsche Telekom)

• Evaluation of fulfillment of a general contractor agreement for run-off/migration of contract portfolios (ERGO)

• -- DEUTSCHE Version (English version above) ---

Experience

• Ex-BCG Platinion: 14 years of strategy and implementation of large-scale IT transformations in complex corporate structures (Manager & Chief IT Architect)
• 20+ years of C-level-adjacent IT consulting: IT strategy, enterprise architecture, IT organization, transformation, due diligence, project recovery, and interim management
• IT leadership responsibility for cross-functional, intercultural teams of up to 100+ people
• Solid hands-on experience in software development, IT architecture, and project management
• Focus on Fortune Europe 500, numerous international projects; SME and start-up experience

Industries: insurance · financial services & banking · energy · telecommunications · retail & consumer goods · industry & engineering · logistics · media · healthcare

Services (focus areas):

• IT strategy, enterprise architecture (EAM), IT landscape target visions and roadmaps
• M&A/carve-out IT/tech due diligence, asset valuation, and cost estimation
• GenAI transformation, process automation, and AI governance
• IT reorganization, target operating model (TOM), agile transformation
• IT governance, development and ITSM processes (BizDevOps, SAFe)
• Review and recovery of critical large-scale IT projects
• Planning/steering of transformation programs and IT project portfolios
• IT service provider/platform selection (RfI, RfP)
• IT project management (agile, classic, hybrid)
• Coaching & interim management

Projects (selection):

• M&A buyer-side IT/tech due diligence of an acquisition in the energy sector (utility, smart home) — AI-augmented with Anthropic Claude
• AI initiative for LLM-supported optimization and automation of sales and billing processes
• Interim management of Enterprise Architecture and development of group target architecture in wholesale (METRO)
• Reorganization: design and introduction of an agile IT target operating model (TOM) at an international wholesale group (METRO)
• IT reorganization: introduction of an agile BizDevOps target operating model (TOM) at an energy group (E.ON Grid Solutions)
• Platform selection / vendor selection for renewal of the core insurance solution of a B2B2C start-up (ELEMENT Insurance)
• Process optimization, digitalization, and introduction of robotics in power plants (RWE Nuclear)
• Assessment of fulfillment of a general contractor agreement for run-off/migration of life insurance portfolios (ERGO)
• Business/IT strategy and InsurTech platform selection for a digital insurer/start-up (nexible, ERGO Digital Ventures)
• Enabling an energy application landscape for multiple sales units (E.ON Energie)
• Strategic architecture decisions in price management of a digital sales application landscape at an energy group (E.ON Energie)
• Stabilization/optimization of an agile DevOps IT transformation in business travel and payment management (Lufthansa AirPlus)
• Interim management in a group-wide security and compliance program of a global insurer (ERGO)
• Building project assurance capability as well as review and optimization/recovery of critical IT projects in an insurance group (ERGO)
• Building enterprise architecture management and development of domain and solution architectures for a logistics group (Deutsche Post DHL)
• M&A IT due diligence – evaluation and valuation of IT assets in the media sector (ProSiebenSAT.1 Media)
• Development of BSS target architecture and roadmap for fixed/mobile convergence (Deutsche Telekom)
• Optimization of IT governance/organization and methodology in application development and testing at a telecommunications group (Deutsche Telekom)

• 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 preparing statutory reports
• Clarification of the prerequisites for using S/4 Hana apps to define and prepare 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 and PSCD for the introduction of new company codes and other organizational structures
• Consulting and documentation of required process adjustments

• Independently manage financial accounting
• Prepare monthly, quarterly, and annual financial statements according to HGB and IFRS
• Create monthly reports
• Prepare booking documents and calculate provisions
• Submit VAT advance returns, annual tax returns, and summary reports
• Consolidate all relevant financial data from multiple entities in SAP BYD
• Optimize AP and AR processes
• Manage general ledger and fixed asset accounting
• Serve as direct contact for internal and external finance topics
• Prepare monthly forecasts, intercompany and account reconciliations
• Manage accounts payable, accounts receivable, and bank accounting
• Submit factoring reports to banks
• Provide cash flow report to the CFO
• Train new finance staff
• Prepare and ensure compliance with financial statements
• Liaise with auditors and tax advisors

• DORA consulting and system optimization
• Process analysis of existing business processes that are complex from both a business and technical point of view
• Analysis of the individual business processes in the relevant business areas Trading, Back Office, Settlement, Custodian Bank
• Interface between the business units and IT to understand and define requirements
• Creation of a business concept incl. adjustments and implementation of software applications and their interfaces to the systems
• Preparation of a decision template for the management board for project approval
• Setting up and running project meetings with the relevant stakeholders and documenting them
• Close collaboration with the stakeholders
• Coordination and control of the analysis
• Creation and planning of resources and budget
• Onboarding of large banks (Asia and Eastern Europe) for Depot B
• Migration of portfolio holdings (volume around EUR 70-100 million)

• 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.

• Developed an IT governance and oversight framework aligned with DORA requirements
• Coordinated and trained external service providers
• Optimized financial processes and performance

• 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

• Led the global HRIS transformation program (16 country units): program setup, PMO, phase planning, status reporting, and steering up to partner/SteerCo level
• Built an HR readiness assessment framework (6 dimensions, weighted scoring) as a decision basis for implementation and AI maturity — mandated by the board as the project outcome
• HR process architecture: analysis of 80+ level-3 processes and 87 ISO process documentations across 13 country clusters; gap analysis and harmonization roadmap
• Designed agentic AI HR processes (hiring, onboarding, probation period management) on SAP S/4HANA Private Cloud and ServiceNow — human-in-the-loop design, process screening for agentic potential, decision paper at partner level
• HRIS market analysis: vendor screening, criteria framework, and evaluation logic for system selection
• HR target operating model: organizational analysis, archetype framework (9 dimensions), governance design for a global HR function
• Self-assessment tools and workshop formats for 16 country HR teams incl. nomination and stakeholder management; SharePoint project hub and communication architecture
• AI-supported consulting delivery: my own Claude-based working model for analysis, document creation, and project management — one consultant delivering program output

• Process optimization, process design
• Business partnering, target vision
• Teambuilding
• Workflow design
• Budget, MEC
• SAP S4/Hana, Board