IBM MVS Experts in Germany

• Technical leadership across hardware, firmware, and software teams; scope: hardware/firmware team (4 people) and leadership group (5 people)
• Consolidated and documented a product family that had grown over more than 15 years and aligned it with CRA compliance — from the bare-metal I/O module to the cloud interface.
• Provided the most important customer product with the essential requirements and architecture documentation within two months — for a firmware landscape that had grown over more than 15 years. It now supports the customer’s modernization strategy.
• Established a monthly reporting line to the supervisory board and executive board within three months: nine meetings since 12/2025. The report itself is versioned and built from the CI pipeline; it is based on automatically collected activity and release data instead of assessments.
• Built a container-based CI/CD infrastructure from scratch: cross-compilation, host tests, and documentation builds in one continuous pipeline.
• Introduced declarative QA gates for DevOps and development artifacts — from the start using lefthook instead of pre-commit, executed in a dedicated container image.

Technologies used: arc42, req42, tpo42, docToolchain, PlantUML, ArchiMate, C4 model, ADR, C, C++ (GTest), CMake, Bare Metal (ARM Cortex-M3/M7), OCI containers, Jenkins, lefthook, Prometheus, Grafana, SBOM, CRA, OPC, SCADA, PLC integration, IPv6 migration, Zero Trust, Sociocracy 3.0, Cynefin

I continuously expand my expertise in AI and automation. I work with ChatGPT, OpenAI, Manus, Gemini, MS CoPilot, APIs, LangChain, Hugging Face, Manus, TensorFlow, and Auto-GPT, as well as Python-based ML frameworks and MLOps tools, to intelligently transform traditional software development, analysis, and testing processes.

• Technical leadership and further development of a team of 28 IT staff (internal & external) in the areas HelpDesk/HelpLine, RHEL (Red Hat), MUREX (trading system & applications), SAP basis operations
• Managing external service providers (including FI-TS for SAP basis operations)
• Personnel, resource and budget planning for the IT department and projects
• Introducing and establishing regular communication formats (weekly status meetings, team and cross-department meetings)
• Ensuring application operations in a hybrid environment (Windows/Linux with database and web/application servers)
• Supporting transformation projects to modernize the application landscape (e.g. DevOps approaches)
• Setting up and implementing a digital IT procurement for hardware & software (e.g. with DELL)
• Developing and managing the "IT Operations DOS" department based on corporate strategy
• Preparing management reports & decision papers on IT projects, optimization potential and automation opportunities
• Representing the department in the advisory boards of the Rentenbank and ensuring regulatory compliance (BaFin §44, GDPR, BSI, MaRisk)

• Development of new simulator features and extension of existing modules using C++.

• GUI design and implementation with Qt for Windows, including redesigns to improve usability and workflow.

• Maintenance and expansion of existing codebase: refactoring, bug fixes, and modularization to support new capabilities.

• Version control using Git.

• Performance optimization of simulation to meet real-time constraints.

• Creating and maintaining documentation: technical comments, design docs, API references and user manuals.

• Led a redesign that improved operator workflow and reduced task completion time.

• Extended simulator architecture to support multiple new scenario types while preserving backward compatibility.

• Implemented refactoring and modularization that simplified maintenance and accelerated feature delivery.

• Technologies: C++03, Qt4.6, QMake, Git, V-Model, Windows

• Support of test management and consulting on replacing the existing core system for non-life insurance with a modern IT platform.

• Planning and controlling test execution as well as test analysis.

• Documentation of test results in JIRA/XRAY and defect management.

• Creating and continuously updating checklists to ensure quality.

• Creating Confluence pages to support test execution and its documentation.

• Creating test completion reports after each test cycle.

• Methods: process planning, status tracking, process optimization, process execution, process quality assurance.

• Tools: MS Office, Outlook, JIRA, Confluence, Wiki.

• Benefit: Support for test management in the preparation, execution and documentation of the different test cycles.

• Design, planning and execution of complex acceptance tests for a document exchange platform for the German justice authorities.
• Validation of decrypted and certificate-based message exchange via web platform, mobile app, and Java API.
• Documentation of test cases, execution steps, and test results.
• Technologies: Windows 11/10, Ubuntu, iOS, Android, Bash for Windows, Java 17, IntelliJ, Git, Jira, Confluence, Citrix Server, xJustiz standard implementation, specific justice software.

• The AVANZA project provides the deployment and procurement of a modern, reliable system for efficient access and sales and supports smooth operations at the Lötschberg & Simplon car shuttle.
• Operations are sustainably secured and the further development of the car shuttle business model is supported.
• Developed a study with an evaluation of possible solution options.
• Supported the decision on options, evaluated the RFI, prepared procurement, concept created based on the chosen option.

• Implementation of MM and SD with integration of Diebold-Nixdorf cash registers

• Capturing the required processes (inventory management, procurement, sales, and cash register processes)

• Customizing MM and SD

• Project planning and control

• Master data upload and inventory recording using LSMW based on Excel spreadsheets

• Cash register data transfer via EDI and IDoc processing (MBGMCR and ACC_DOCUMENT)

• Creating extensive documentation for internal staff

• No middleware; instructing and training customer staff in customizing; SAP standard as prerequisite

• SAP ECC 6.0 modules MM, SD, FI

• Projects at Raiffeisen Software Group (RSG), Linz from 2022-01-01 to 2025-03-31: application development on mainframe with PL/1, DB2, JCL, Tabex; development environment with idz, Jira, Dimensions, Confluence; execution of projects in banking reporting (own funds, capital requirements, large exposures, leverage ratio)

• Project at Airbus, Hamburg from 2020-01-01 to 2022-12-31: mainframe system enhancements (TAKSY) in agile environment (Scrum, SAFe); business analysis; technical design; implementation (PL/1, DB2, IMS, JCL); test management; deployment

• Taking over the troubled project from the internal project management and successful turnaround of project phase 1 (cutover of approx. 1000 servers (VMs)/standard desktops, specialized desktops)
• Responsible project management for the successful phase 1 transition (planning in the shortest possible time followed by implementation (very successful with low ticket volume))
• Stakeholder management – taking over direct (daily before cutover) communication with the client from the Chief Operation Manager in the format of regular meetings in taskforce mode. Rapid rebuilding of the previously lost trust base and restoration of the client relationship for optimal satisfaction
• Taskforce mode to eliminate all existing issues/showstoppers before cutover
• Scope clarification, setup, and scheduling of phase 2 activities (e.g. silo/admin servers)
• Kick-off of phase 2 / handing the project back to the success line for the internal project management/line to handle the remaining defined topics
• Establishing, preparing, and conducting steering committees with V-1 management to align the guardrails
• Moderation of various regular meetings and operational workshops
• Participation in the lessons learned with the client to address dissatisfaction related to the internal project management (before my start! They are extremely satisfied with my work)
• Tools: Atlassian Suite (Confluence/JIRA), MIRO, Sharepoint; MS Office (PowerPoint, Excel, MS Project)

• Creation and review of test conditions

• Execution of functional tests

• Defect management

• Supplier management

• Team coordination

• Estimation of test effort and reporting

• Test planning

• Ongoing and new development of integrated scheduling systems

• Java web client / Linux server, Oracle Instant Client / Oracle Database Appliance server, Unix, ESB – Enterprise Service Bus, SQL, TIBCO EMS – Enterprise Message Service / JMS, REST, Impero Guest

• HP ALM / Micro Focus Quality Center, Citrix, JIRA, XRAY, Impero Guest, MobaXTerm, Confluence, SharePoint, MS Teams, MS Office

• Project review, restructuring, and PM for the migration of a total of 12,000 Windows workplace systems (650 applications) from SCCM and Empirum/Matrix42 to MS-Intune after a merger.
• Took over a heavily delayed / not ideally managed project in the role of the "firefighter".
• Completely revised and adjusted/updated the planning of the customer and the involved service provider.
• Introduced planning baselining as well as tracking/mitigation of current risks.
• Introduced an efficient, partially automated planning/reporting interface between MS Project Planning (service provider) and Jira (customer).
• Restructured meetings to increase efficiency and remove redundant appointments.
• Completed the analysis and design phase and created base data for migrations from heterogeneous systems of the two merged companies.
• Started the User Acceptance Test (UAT).
• Technologies: MS Autopilot, Zero Touch.

• Took on the role of Service Manager for Microsoft 365 and Azure services
• Coordinated service providers in the areas of collaboration and security (Exchange Online, Teams, Azure AD)
• Monitored and optimized SLA-compliant operating processes (Incident, Change, Problem)
• Worked closely with internal IT management and integrated ITIL processes into Azure DevOps
• Microsoft Azure, Exchange Online, Teams, Azure AD, ITIL v4, Azure DevOps, Power BI, ServiceNow

• Assessing the current status (planning stage / rollout status) of the so-called inter-polygon routes
• Creating an end-to-end project plan for the individual routes, considering active and passive components and tasks
• Monitoring and controlling the implementation of the plan
• Optimizing the chosen network architecture
• Creating network and splice diagrams