SAP IDoc Expert

• Introduction of 5 different process applications for different teams

• Release planning: scope and time management

• Resource/capacity planning

• Conducting Sprint Planning / retrospectives

• Increment planning (several sprints)

• Preparation of Steering Committee meetings / reporting to the Board

• Coordination / alignment with external suppliers / deliveries

• Resource planning for multiple projects

• Coordination with business department and development team

• Identification of best practices with IBM BAW

• Cost control and planning for the project team and external service providers

• Collection of KPIs using LogScale

• Analysis of application errors with LogScale / Queries

• User Story definitions / coordination of requirements with the business department and development team

• Testing and defect tracking

• UI/UX design of applications

• Preparation and moderation of Brown-Paper workshops

• Test concept, test data, test organization, test execution

• Collection of team velocity / metrics

• Test execution

• Script for automated testing

• Test organization with business department and IT

• Recording and prioritization of defects

• Establishment and operation of the application

• Establishment of application monitoring with LogScale Dashboards

• Checking health endpoints with PowerShell

• Post Mortem analysis

• Establishment of Incident Management

• Establishment of Problem Management

• Analysis of errors using LogScale Queries and Dashboard

• Pre-processing of data for AI

• Evaluation using AI language models (Meta Llama 3.3 LLM and deepset Haystack) and RAG

• Installation of runtime environments for LLMs (Large Language Model)

• Evaluation of various LLMs

• Installation of RAG (Retrieval Augmented Generation) and integration with LLM

• Extraction of unstructured data with LLM and RAG

• Project based on IBM BAW (Business Automation Workflow), Websphere Liberty, Domea, d.3, REST, LogScale (formerly Humio), Swagger, Powershell, JIRA, Confluence, Lucom Interaction Platform (LIP), Mattermost, Jabber

• Lead architect for an enterprise loan digitisation programme, coordinating 12 engineers across five workstreams and serving as final technical authority on system design.
• Cut critical application response times by 68% (display 17.3s → 5.6s; modification 11.8s → 5.0s) through targeted caching, OData query optimisation and lazy-loading refactoring; further optimisation in progress.
• Own production error triage, prioritisation and resolution across a multi-application portfolio supporting live lending operations.
• Design and implement SAP Fiori applications on SAP UI5, TypeScript and RAP, owning delivery from architecture and code through rollout and production support.
• Established C4 architecture documentation and decision records for the full programme, enabling faster onboarding and consistent cross-workstream design governance.
• Co-managed S/4HANA release cycle alongside primary responsibilities, coordinating directly with SAP support to resolve critical system issues across the portfolio.

• 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

AI-Native S/4HANA Custom Development

Solution architecture and implementation of an extensive SAP S/4HANA custom solution replacing required retail/POS standard functionality directly in S/4HANA.

• Architecture and technical design for inbound, persistence, enrichment, validation, aggregation and outbound processing
• Modular SAP ABAP / ABAP OO implementation based on Clean Core, Clean Code and testability principles
• AI-native development workflow with AI-generated implementation and test code
• Orchestration of specialized AI roles for discovery, planning, development and independent reviews
• Decision Freeze, Build Plans and Quality Gates for controlled AI-based delivery
• Human Design Authority for architectural decisions, SAP validation, technical acceptance and release

IMPACT ACHIEVED:

• Productive use of an AI-native engineering model in a real enterprise SAP project
• Extensive modular custom solution with several hundred SAP development objects
• High maintainability and testability through modular architecture, automated tests and structured reviews
• Replacement of required standard functionality to reduce recurring licensing and operating costs

• Implementation of the S/4HANA transformation (brownfield) at an agricultural equipment manufacturer
• Implementation of the new supplier evaluation in S/4HANA, including programmed technical adjustments to customer-specific processes
• Conducting workshops with business departments on technical and functional changes in S/4HANA, with a focus on P2P processes and approval processes
• Preparation of the new system incl. customizing and conversion of customer-specific ABAP developments to Clean ABAP

• Finalised several addon implementation projects as project manager, coordinating external service providers
• Implemented VAT reporting, e-invoicing, asset reporting, drug reporting to governmental authorities
• Played key role as business solution design specialist in an S/4HANA implementation project across PP-PI, eWM, QM, PM, IM, MM, SD and other logistic areas
• Designed organizational structures and processes in all logistic areas
• Developed and proofread business blueprint, managed implementation, test preparation and migration

• Optimization of software lifecycle processes for SAP platform apps (BTP CAP)
• Development of template MCP servers for S/4 CALM systems of Porsche AI (BTP)
• Design, development, and IT product management for two MS CoPilot custom agents supporting SAP systems (incl. MCP integration)
• Lead Center of Practice: AI-assisted ABAP development
• Initiation and coordination of the proof of concept implementation of conduct.ai
• Advising application teams on software and integration architecture, clean core principles and implementation, as well as AI use on the SAP platform

• Implementation of production plants in China on S/4 HANA
• Involved in merger of M Chemicals business in Korea on S/4 HANA
• Involved in the setup of a new production plant in Sheboygan US on ECC 6.0
• DA ERP transformation of Life science and Electronics business on two different systems
• Involvement in setting up the template on S/4 HANA RISE
• Support data migration
• Preparation of test scripts, support testing and assessment of the solution
• Handling cutover and hyper care activities
• Setting up of a new plant in Hamburg in Life Sciences SAP 4.6C
• Implementation of new interface for purchase order processing for Portugal between SAP and TEVAMAP application
• Enhancement of new interface for order confirmation and purchase order delivery schedule between SAP and LIPO applications
• Involved in the Ariba rollout for European countries Nordics, Austria and Switzerland
• Integration with Ariba applications - enhancement of the interfaces related to master data like supplier master data, GL accounts, cost center data, user data
• Analysis, validation and assessment of end to end solution from extraction of master data to creation of purchase order in SAP
• Involved in the PO automation process in case of indirect procurement across different systems and different countries

• IT services for the administration of the SAP® systems NETZ/Sales, BW, Core, Portal
• Administration of SAP® authorizations and users via central user administration (ZBV) in SAP® Solution Manager
• Setup and further development of SAP® authorization roles
• Role assignment according to requests
• Creation, change, and deletion of users
• Incident handling and error analysis (e.g. authorization trace, debugging in test systems)
• Cooperation with the SAP® development team on new implementations and process changes
• Special tasks
• Execution of Privileged User Management (PUM) 2023–2025 using Security Bridge
• Decommissioning of the SAP® Core system and migration to S/4HANA

• Support and further development of a complex process for creating XML documents for electronic invoices / E-Invoicing (XRechnung, ZUGFeRD)
• Automation of operational processes, process development and optimization
• Development of frontend applications with MS Power Apps
• Porting SQL Server 2016 to SQL Server 2022
• SQL Server database administration

• 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

• Stream lead - Training
• Trainings – lead of the team & support of the relevant stakeholders
• Management of learning journeys & development of training plans
• Training environment & data – definition & development with the IT team
• Training documentation – management & coordination of the preparation
• Project lead - Germany
• Project management – planning, motivation, communication, execution
• Business process integration – analysis, definition, management
• Rollout management – planning, coordination, deployment
• Governance – template & project
• Test management – definition, findings, solutions, documentation
• Trainings – management of the training programs
• Business process management – integration, analysis, optimization, etc.
• Template & project governance
• Customizing FI
• Definition of the scope of acceptance test cases
• Organizing and execution of the tests – findings, development of design solutions based on business requirements, documentation, etc.
• Trainings – planning, creation, delivery, documentation, etc.
• Business process management – definition of data transfer, etc.
• Preparation and management of template workshops
• Preparation of technical and process documentation
• Agile project management
• Stream lead – process integration & governance
• Business process management – integration, analysis, optimization, etc.
• Management of the rollout quality gates
• Project governance – planning, monitoring, control of project progress
• Template governance – harmonization and standardization of business processes
• Standing governance – master data, chart of accounts, authorizations, customizing, etc.
• Standardization of repeating processes, incl. analysis and optimization, planning the transition to daily business and the activities within the month, interim, annual close, creation of a concept, checklist, etc.
• Participation in defining different interfaces (incl. concept, defining organizational structures, master data, template & standing governance, etc.)
• Definition and structuring of monitoring processes: IDocs, BI folders, etc.
• Participation in the definition and customizing of different areas in FI

• Holistic responsibility for modernizing and expanding federal networks and upgrading critical data center and telecom infrastructure in the high-security agency environment of BDBOS
• Planning and management of the expansion of national BOS network infrastructure in the VS-NfD/KRITIS environment with technical decision authority at the architecture and component level (Cisco, Layer 2/3, WAN redundancy)
• Planning, tendering (EVB-IT/UVgO) and oversight of the upgrade of security-critical telecom infrastructure for emergency call 110/112 (ACD)
• Capacity planning, rack integration, structured cabling, power supply, cooling concept (CRAC/In-Row) and DCIM monitoring for data center expansion
• Building the IT department from scratch: structures, governance, processes, team recruiting, vendor selection and long-term IT strategy
• Planning and managing infrastructure and application migrations: migration strategies, batch planning, hypercare stabilization and rollback concepts
• Creating vendor-neutral specifications (telecom systems, signature solutions) according to EVB-IT and UVgO; contract award and vendor management
• Setting up a secure IT environment according to BSI basic protection, ISO 27001 and VS-NfD; developing IT security concepts and CMDB analyses
• Hands-on program leadership: decision papers for management and steering committees, risk management, reporting and change request control