IBM i Expert

• Processing of a five-month backlog of incoming documents;
• Clarification of residual items and overdue open items;
• Review, reconciliation and clarification of accounting matters;
• Analysis of existing workflows and implementation of process improvements;
• Processing of accounting transactions in SAP FI and MM

• Responsible for the backlog and roadmap of a production SaaS compliance platform for the EU Deforestation Regulation (EUDR), with around 30 customers on AWS and Docker.
• Coordinated feature development and API integrations across 2 external and internal development teams.
• API integrations with the EU EUDR API and SAP.
• 70% fewer customer-reported issues, supporting ISO-27001 certification.

• Interim assignment until a new plant manager was found
• Ensured production control and on-time order processing.
• Introduced transparent weekly and monthly planning as well as forward-looking capacity management.
• Cleaned up and structured bills of materials, master data and work documents.
• Held team leader meetings and coordinated the production areas.
• Took over the professional management of the production teams.
• Promoted an open, constructive leadership culture and involved employees in change processes.
• Coordinated with adjacent areas (production planning, supply chain, quality, development).
• Documented measures and prepared the handover to permanent management

• Management of IT with 10 employees, including budget and personnel responsibility.
• Harmonization of the Navision systems in Germany, Switzerland and Austria.
• Connection of the ERP systems in Switzerland, Austria and Italy to the central Microsoft Power BI systems in Germany.
• Rollout of a new firewall at 10 locations in D, CH and A.
• Evaluation of a new DMS.
• Migration to Windows 10 / 11.
• Transformation of 9 countries into ONE Europe.
• Start of NIS2 implementation in 5 European countries.

• Optimization of business results and expansion of sales activities
• Responsible for personnel organization
• Introduction of a document management system (DMS)
• Introduction and optimization of the ERP, CMS and CRM landscape
• Introduction of digital signatures
• Increase in revenue, reduction in costs and increase in EBIT

Windows Administrator, software deployment, user support, Azure / Entra administrator, hardware support, software packaging, defining and introducing processes

Tasks performed:

• Handling incidents, service requests & changes in the Matrix42 ticket system
• Handling / resolving incidents
• User creation / permissions
• Installation and patch management for Windows
• Permissions and license management in Entra
• Process improvement and documentation

Tools and methods used: Windows Server 2016 / 2019, Active Directory, Windows 11, Office 365, Azure / Entra, Ivanti, VMWare & ESX, Dell & Kyocera Minolta & Zeus hardware support

• Accounting, controlling and reporting, taxes, risk management, treasury, credit management, legal matters, internal control/SOX, HR, IT, cooperation with auditors, tax advisors and public authorities
• Logistics, production and HACCP, occupational safety and veterinary and hygiene regulations (food production)
• Due Diligence, M&A, company demergers, crisis management, project management

Selected interim projects:

• Twistcafe (Fastfood restaurants) – Interim CFO (worldwide): Resolution of problems with accounting and tax documents for the annual financial statements of the German and Austrian subsidiaries; standardization of accounting for intercompany transfers of raw materials and cash (CZ, SK, DE, AT, PL); automation of recharging discount campaigns and cashless payments; improvements to cost center accounting (200+ CCs)
• VIB Vermögen AG (Branicks Group, Real Estate) – Interim Head of Accounting (DE): HGB annual financial statements for 19 companies without complications; IFRS consolidated financial statements without complications; automation of consolidation measures (debt consolidation, expense and income consolidation); automation of reporting
• NTT (Telecommunications) – Interim Senior Controller (DE): Simplification, standardization and automation of month-end closing activities (accruals for customer and supplier rebates, order backlogs, accrued revenues, monthly GP adjustments), including SOX compliance documentation; balance sheet reconciliation; improvement of loyalty reporting
• Lilium (Aerospace) – Interim Senior Accountant (DE): Tax line corrections; asset migration from Datev to Infor LN for two companies, including improvement of data quality; automation of the processing of interim asset investments and asset additions; successful SOX closing audit for fixed assets leading to the US stock market listing
• Brose (Automotive) – Interim Head of Controlling (CZ): Successful Forecast III; simplification and automation of calculations and reporting (hourly rates, temporary workers, monthly reports, scrap and external rework, direct personnel costs); platform change for the monthly management board meeting
• LUST Hybrid-Technik (Pankl-SHW Industries, Manufacturing) – Interim Finance Controller (DE): Monthly and annual financial statements (including inventory valuation, cost and performance accounting), budget-to-actual comparisons, variance analyses, ad hoc evaluations, forecast preparation, automation
• Gebr. Bode (Schaltbau Group, Manufacturing) – Interim Head of Accounting (DE): Annual financial statements without complications; simplification and automation of liquidity planning; automation of the open items report, standardization of intercompany reconciliations; introduction and automation of the fixed assets report
• Hyva Georg Hydraulik (Manufacturing) – Interim Senior Accountant/Finance Manager (DE): Simplification and automation of VAT returns, Intrastat and other statistical reports; automation of the fixed assets report; introduction and automation of CC report/forecast and temporary worker accruals; master data correction
• Beiersdorf (FMCG) – Interim Finance Manager (DE/SK): Transfer from the local finance department in Slovakia to the SSC Hamburg
• Trèves (Automotive) – Interim Plant Controller/Head of Finance & Controlling (CZ): Identification of weaknesses; implementation of controlling processes for the purchasing process (PR/PO/GR), payroll, energy costs, ICO accounting, CC reporting
• Hella Slovakia Signal-Lighting (Automotive) – Interim Head of Controlling (SK): 10% reduction of receivables open items; automation of reporting (Capex, Cost Center, Maintenance Costs); standardization and automation of inventory and receivables impairment
• Tunap Cosmetics (FMCG) – Interim Finance Manager (DE): Reduction of DSO by 21 days in four months; balance sheet cleanup (fixed assets, provisions, prepaid expenses); reduction of unprocessed invoices in the workflow by 1.2 million EUR during the annual closing; automation of impairments, controls and reporting
• Hanon Systems Autopal (Automotive) – Interim Finance Controller (CZ): Identification of weaknesses; automation of CC report and orders; automation of inventory and receivables impairment
• Drägerwerk (Manufacturing) – Interim Finance Controller (CZ): FI/CO management, process audit, investment incentives, accounting accuracy, SAP settings (FI/CO, MM)
• Maxim Chicken (FMCG) – Interim Head of Finance and Controlling (CZ): Introduction of new products for gastronomy with increased sales; introduction of cash flow forecasting; reduction of variable and fixed costs (raw materials, real estate leasing); successful veterinary inspection
• Trelleborg Automotive Czech Republic (Automotive) – Interim Plant Controller/Head of Finance (CZ); Carbody Czech Republic (Automotive) – Interim Plant Controller/Head of Finance (CZ): Accounting correction; company demerger with SAP split; introduction of cash flow forecasting; factoring
• Kantar Media (WPP Group, Media) – Interim Finance Manager (CZ): Automation of the US GAAP report; reduction of fixed costs (supplier contracts, personnel costs); implementation of standard processes; successful SOX audit; relocation of production

• Overall responsibility for the project lifecycle from scope definition to completion
• Close collaboration with platform teams, IT leaders, and external service providers
• Application of SAFe principles and structured sprint work
• Creation of a migration roadmap with clear milestones
• Monitoring of the lifecycle: onboarding, repository migration, replication of permissions, and system tests
• Visualization of the architecture with PlantUML and Gliffy as well as documentation in Confluence
• Regular status reports and running knowledge transfer sessions

• TANGe is a DFS project to introduce a modern digital tower system that is meant to make airport air traffic handling safer, more efficient, and future-ready. My current task in this project is the development of the Runway SID Assignment Service, which is responsible for assigning departure routes from an airport. SID - Standard Instrument Departure stands for a standardized departure route.

Software: Java, microservices, Kafka, Robot Framework, Gitlab, Kubernetes, Docker

• Revenue €90 million, 50 employees

• Industry: Shipbuilding, marina

• Temporary assignment as Head of PMO

• Recording and validation of PMO processes

• Creation of capacity planning through 2032

• Evaluation of standard preservation processes, including VSM and macro mapping

• Creation of planning tools for project coordinators

• Participation in coordination meetings with Meyer Werft

• Data preparation for the monthly review

• Contribution to the tendering strategy for new ships

• Creation of roles and responsibilities and job descriptions for project managers and project coordinators

• Project management for the Disney Adventure cruise ship

• Re-design of the reporting tool

• Creation of a planning tool for project coordinators with a planning horizon through 2032

• Design of an on-call service, including work instructions

• Creation of calculation models for quotations

• Project management for Disney Adventure

• Lead programmer, architect and deputy product owner
• Completed transition from zPDV to STEP
• Ensured quality of C++ and Perl sources through automated and manual checks
• Supported resolution of incidents and errors in testing
• Implemented batch for supplementary assignment of payment run numbers
• Implemented batch for distribution of SGB 2 information to the central payment unit
• Supported replacement of Solaris with Linux
• Upgraded gcc from 7.4 to 9.3
• Programmatically generated Makefiles from Borland projects for builds
• Extended funding data with new attribute “Kennzeichen Fahrtkosten Praktikum”
• Programmatically generated XSD and WSDL files from IDL definitions
• Represented the product owner when needed
• Implemented batch for one-time payment processing
• Developed generator for Liquibase files
• Implemented and maintained regular anonymization of production data
• Supported migration from SLES 12 to SLES 15
• Supported introduction of mutual TLS
• Implemented batch for sending deletion impulses to EDA BE
• Organized script directory structure
• Investigated potential introduction of String-Latin and implemented minimal solution
• Remediated security findings identified by CheckMarx
• Supported PAP recalculations and general change notices
• Converted ERP interfaces from SOAP to REST
• Planned technical and business topics such as register modernization, cash register security, training costs, four-eyes principle

• The customer is undergoing a comprehensive transformation. All SAP ECC landscapes worldwide are being migrated to SAP S/4HANA, with the goal of introducing a standard template worldwide.

• The program also includes the “RISE with SAP” migration and modernization program, which may involve migrating the landscapes of selected country installations to the SAP Private Cloud.

• On the stakeholder side, the program reporting line extends to the company’s executive board and that of the implementation partner.

• Fiserv Germany’s ERP landscape currently includes several non-standard SAP tools and applications that extend the functionality of the ECC environment and can often be integrated into downstream systems. As part of the transition to SAP S/4HANA, it is essential to assess the core functionality, integration points and future viability of these applications in order to determine their alignment with the target architecture.

• The focus of the work is on providing expert advice and assessment to define the scope, strategy and roadmap for transitioning Fiserv Germany’s SAP ECC system to SAP S/4HANA.

• The recommended best practices from SAP are followed and a structured approach is used to ensure a smooth transition with minimal disruption while maximizing business value.

• This assessment forms the basis for a successful SAP S/4HANA transformation and ensures alignment with industry best practices, regulatory compliance and future scalability.

• Migration Strategy Definition – assessment of available transition approaches based on business objectives, technical feasibility and SAP Best Practices.

• Technical Readiness Assessment – conducting a system analysis to assess compatibility, custom code impact, data volume management, integration points and infrastructure readiness for SAP S/4HANA.

• Business Process Impact Analysis – reviewing the latest business process documentation to define the scope and effort required to implement the necessary functions in SAP S/4HANA and to identify opportunities for process optimization.

• Roadmap for Non-SAP Systems and Applications – assessment of third-party and legacy applications regarding their integration with SAP S/4HANA and recommendation of consolidation, migration or replacement strategies.

• Deployment & Implementation Planning – defining a phased approach for implementation, including project schedules, risk mitigation strategies and key milestones aligned with business priorities.

• This transformation takes place in phases: the Discovery phase leads to the Explore phase, which is followed by the Design phase and finally implementation.

• Program management

• Change management

• Requirements management

• Transition management

• Stakeholder management

• Risk management

• Comprehensive coordination

INTRODUCTION OF AI OPERATING SYSTEM & DEVELOPMENT OF DIGITAL INFRASTRUCTURE

Technology / Start-up – Munich, 3 employees

Objective:

Selection and implementation of an AI operating system, development of a structured knowledge base, and creation of AI agents and skills to increase efficiency across the entire company

• Requirements analysis and evaluation of suitable AI operating systems based on the company’s specific needs
• Design and development of a central knowledge base as the foundation for AI-supported processes
• Development and configuration of AI agents and skills for recurring business processes
• Prompt engineering for precise, context-based outputs from the AI agents
• Personal coaching for the founders and employees on using AI independently and effectively
• Overall project management, including planning, prioritisation and progress tracking
• Documentation of the implemented solutions and creation of usage concepts for sustainable operation

Tools: Langdock, SharePoint, Prompt Engineering, AI agents, AI skills

• Development of a new generation of Spring Boot microservices for an archiving system on OpenShift, monitoring, security analyses

Stack: Java, Spring Boot, Kafka, Vaadin, OpenShift 4.x, Maven, Artifactory, Jenkins, Git/Github, GitHub Copilot, GitOps, CI/CD, Kargo/ArgoCD