Hans-Dieter Große-Kreul
40+ Years of IT Expertise: Bridge Builder between Mainframe & AI | Interim Test Manager & Business Analyst for Various
Experience
Training as an AI Expert
I continuously expand my expertise in AI and automation, working with ChatGPT, OpenAI, Manus, Gemini, MS CoPilot, API, LangChain, Hugging Face, Manus, TensorFlow and Auto-GPT as well as Python-based ML frameworks and MLOps tools to intelligently transform classic software development, analysis, and testing processes.
Test Manager Life Insurance
Ergo Insurance
- Life insurance area: Test manager of a life insurance policy administration.
- Project language: German.
- Software used: COBOL, DB2, Endevor and ISPW, TSO, JCL, z/OS, IBM Rational Developer for Z (RDZ), ERwin, Case 4/0, MS-Access, Outlook, HP-ALM, MS Office 2019 and 365, SharePoint, MS Internet Explorer, MS OneNote, Kanban.
Application Development Life Insurance
Talanx Insurance
- Life insurance area at Neue Heimat Hamburg: Maintenance of a life insurance policy administration with partial development of new requirements (Riester, FATCA, COC - Code of Conduct, etc.).
- Project language: German.
- Software used: PL/1 for Windows, C, Oracle, HORA, shell scripts, MS-Access, Unix, Outlook, HP-ALM, UTM, HelpDesk ticket system, MS Office, MS Internet Explorer.
Application Development Life Insurance
Basler Insurance
- Life insurance: Maintenance of a life insurance policy administration with partial new development of requirements (Riester, etc.).
- Migration to msg life.
- Project language: German.
- Software used: COBOL, Assembler, PL/1, REXX, Adabas, JCL, UC4 jobs, CICS, DCF, DB2, HelpDesk ticket system, MS-Access, Lotus Notes, MS Office, MS Internet Explorer.
- Data modeling and database design with ERwin.
- User training on the created applications.
Creation of a Kindle eBook
Amazon
- Creation of an eBook for Kindle.
Application Development Life Insurance SEPA
Generali Insurance
- Life insurance area: SEPA project, modifying existing host programs.
- Analysis of existing programs in the life insurance area.
- Reviewing the data model and making changes based on SEPA requirements.
- Modifying DB2 tables and creating new tables.
- Creating access routines for new tables and adjusting programs.
- Conducting module unit tests, functional tests, and release tests.
- Migrating the programs into production on December 8, 2012.
- Project language: German.
- Data modeling and database design with ERWin.
- Tools used: IBM Rational Developer for Z (RDZ), ClearQuest, RSA, COBOL, TSO, JCL, DB2, IMS, CVS, Lotus Notes, IBM HelpDesk ticket system, MS Office, MS Internet Explorer.
Creating an eBook with iBook Author
Apple
- Creating an eBook with iBook Author.
Application Development
Dental Supplier
- Business analysis, maintenance, optimization, and SEPA adaptation of modules in an invoicing program developed in MS Access.
- Ongoing development, bug fixes, and new module development.
- Data modeling and database design with ERWin.
- Using VBA, MS Access, MS Office, and MS Internet Explorer.
Life Insurance Application Development
Sparkassen Insurance
- Life insurance area: maintaining a life insurance policy management system with partial development of new requirements (VVG, pension payment notifications, etc.).
- Migrating the host life insurance system to COR.
- Main tasks in maintaining and enhancing the life insurance policy management (host).
- Developing new programs in the life insurance area and ensuring production operations.
- Host shutdown project 2011: responsible for archiving all host Adabas and VSAM files, creating and organizing documentation.
- Tools used: PL/1, TSO, JCL, Adabas, Natural, CICS, Endevor, WinSCP, Oracle 10, MS Access, MS Office, MS Visio, delivery, programming and testing of FSCD-SAP, Lotus Notes.
- Performing quality assurance of the delivered software.
Tool Selection for Host and Client/Server
Generali Insurance
- Selecting tools for a major European insurer (IBM Rational Tools, ClearQuest, RSA, RequisitePro, Lotus Notes, RMC).
- Choosing and rolling out the tools for over 700 workstations.
- Supporting pilot projects in development, configuration management, test management, and deployment.
- Setting up license servers with LDAP.
- Working on a pilot project in the auto insurance area to replace the dual card with the electronic insurance confirmation (EVB).
- Tools used: Rational Software Architect 7.0, Java, Eclipse, WebSphere Application Server 5.1, 6.0, and 6.1, MS Office.
- Project language: German.
Test Manager Data Warehouse Development
GAD
- Quality assurance of the data warehouse: test manager and support for the project manager in redeveloping a BI/data warehouse solution for a banking group (bank21-reporting Release 2.0.0).
- Tools used: AIX, DB2, SAS, Java, Websphere, Datawarehouse ETL, Sagent, Cognos 8 Framework-Manager and Report Studio, Clear-Case, Clear-Quest, Rational Software RDA and RSA, Test-Director, MS-Project, MS-Access, MS-Office, MS-Visio, Lotus Notes.
- QA of created programs and reports.
- Project language: German.
Change Management SCLM Interface Adjustments
Deutsche Ring Insurance
- Support and modification of the existing interface developed in ISPF/REXX/CLIST after replacing CA-Endevor.
- Tools used: z-OS, DB2, CLIST, TSO, JCL, PL/1, Rexx, Lotus Notes, MS-Office.
- Performed quality assurance of the migrated tools.
Test Manager Data Warehouse Migration
Citibank
- Test manager for converting an existing data warehouse into a new system.
- Tools used: AIX, DB2, SAS, Datawarehouse ETL, Cognos, Test-Director, MS-Project, MS-Access, MS-Office, MS-Visio.
- QA of data, programs, and reports.
- Project language: English and German.
Technical Project Lead CA-IBM Migration
Deutsche Ring Insurance
- CA tools to IBM tools migration: technical project lead for migrating CA-MIM (MII, MIA) to IBM GRS (ATAM).
- Business analysis and testing in a real-time environment.
- Support and modification of the existing ISPF/REXX/CLIST interface during the switch from CA-Endevor to SCLM and the replacement of CA-Easytrieve.
- Tools used: z-OS, DB2, CLIST, PL/1, TSO, JCL, Rexx, CA-Tools (Endevor, MIM, Easytrieve), Lotus Notes, MS-Office.
- QA of the migrated tools.
- User training on the developed applications.
Technical Project Lead DB2 Migration
Citibank
- DB2, SAS, and data warehouse migration: technical project lead for implementing DB2 V 8.2 AAA on AIX 5.1.
- Analysis and transfer of mass data (approx. 3 terabytes) in a real-time environment.
- Tools used: AIX, DB2, SAS, Datawarehouse ETL, Cognos, Test-Director, MS-Project, MS-Access, MS-Office, MS-Visio, Lotus Notes.
- QA of the migrated data for client-server applications.
- Project language: English and German.
Testing stock market application in Java
Bank
- Testing a real-time stock market application with live stock quotes, buy and sell, account monitoring and settlement.
- Used software: JAVA, J2EE, XML, XSLT, MS Office, Access, Excel.
- QA of the tested software.
Life insurance application development
Sparkassen Insurance
- Life insurance: maintenance of a life insurance policy management system with partial development of new requirements (Riester, fund management, etc.).
- Creating specifications in collaboration with the business department.
- Delivery, programming and testing of FSCD-SAP.
- Used software: PL/1, Adabas, Natural, CICS, JCL, TSO, MS Office, Access, Lotus Notes.
- QA of the delivered software.
- User training for the developed applications.
Testing a customer info application
Arcor
- Telecommunications: supporting developer testing for the rollout of a new customer information system.
- Used software: Java, Eclipse, Oracle, Sun, MS Office, PVCS.
- QA of the delivered software.
Website with dynamic content
Cosmetics industry
- Cosmetics: creating a website using Adobe GoLive 6.0.
- Updating content through dynamic web pages.
- Data modeling and business process design with Aris.
- Used software: Adobe GoLive 6.0 Content Management System, MS Office, MS Access, PHP, MySQL.
- QA of the delivered software.
Test manager in a host project (Riester)
Sparkassen Insurance
- Life insurance: organizing functional and developer tests in a host project.
- Coaching the project manager.
- Data and process modeling with Aris.
- Developing test strategies and providing functional support to the test teams.
- Testing the SAP collection interfaces.
- Test management with custom development in MS Access using Visual Basic.
- Used software: COBOL, Natural, Adabas, MS Project, MS Office.
- Test tools: WinRunner, TestDirector.
- Conducting quality assurance and configuration management of the delivered software.
DB2 Project Manager for a Web Portal
Daimler-Chrysler / T-Online
- Organization and design of DB2 administration for 24/7 availability, including backup, stabilization, configuration management, and optimization.
- Technologies used: UNIX, NT, DB2, Java on NT and Sun Solaris.
Test Manager in a Java Project
Zurich Versicherung
- Commercial liability domain: organization of functional and developer testing in an OO Java project.
- Bug tracking with Synergy/CM (formerly Continuus).
- Integration of bug tracking into a custom test tool developed with Access.
- Development of test concepts.
- Development with Java 1.2.2, TogetherJ, and DB2.
- Execution of configuration management and QA of delivered software.
- Platforms: MVS, NT, and Sun Solaris.
- Tools: WinRunner, TestDirector, Lotus Notes, MS Office.
Test Manager, Concept and Implementation of Test and Release Management
Deutscher Herold Versicherung
- Operational Organization (BO) area: concept, implementation, and introduction of functional test and release management.
- Development of test concepts, test automations, and process models with Adonis following the CMMI methodology.
- Linking an in-house Access development (multi-project tracking tools) with a self-developed test management and release support tool.
- Test support for the introduction of the euro in the Eurofit project.
- Development of a multi-project tracking tool with MS Access and Visual Basic to monitor deadlines for all euro projects.
- Environment: Host MVS, PVCS, Adonis, Lotus Notes, test tools from SQS, client-server.
- Configuration management and QA of delivered software.
Coordination of Test Acceptance Management
T-Mobile
- Monitoring and coordination of test activities for a newly developed rating and billing system.
- Development of release systems and test automation tools with MS Access and Oracle.
- Software used: C++, Access + VBA, Crystal Reports, Lotus Notes, Oracle.
- Test tools: WinRunner, TestDirector, ClearCase (Rational).
- Configuration management and help desk ticket system.
Optimization of PPS Systems
Delta Top
- Revision and optimization of a PPS system developed in MS Access, Visual Basic, and MS Excel for the supplier industry.
Quality Assurance AutoBank
CL-Factoring GmbH
- Review of user and technical documentation.
- Verification of the deployed software (Centura/Gupta) against the source code for the Auto Bank, Auto Avis, and Avis Scan programs.
- QA of the delivered software.
Business Process Optimization
Deutscher Herold Versicherung
- Operations organization (OO): developing a process manual and selecting tools for capturing business processes.
- Coordinating and supporting the selection of a CASE tool (Adonis, Aris, Innovator) for developing applications with structured and OO-compliant methods.
- Implementing the developed method in two pilot projects using Adonis.
- Modeling organizational structures with Adonis.
- Configuration management with PVCS.
Y2K Time Travel Concept
Signal Versicherung
- Developing a concept for the planned time travel in 1999.
Test Management System Concept
WestLB
- Developing a concept for a platform-independent system for reusability and test automation of test environments, test data, and test cases.
- Creating a data model, functional model (IDS-Scheer method of the EPC), and presentation document.
- Data modeling with Silverrun.
- Environment: Host MVS, Compuware and SQS test tools, client/server Uniface.
Y2K Time Travel Concept
SEB (BfG)
- Developing a concept for the planned time travel in 1999 using Compuware products.
Project Coordinator Y2K and EURO
DEVK
- Led and co-led the core JTW team in converting the entire host and client/server environment for millennium compliance.
- Created a concept for an Integrated Test Environment (ITU) with test automation including data modeling.
- Automated conversion and testing of over 8,000 host programs.
- Reduced estimated costs from €11 million to around €4 million through a systematic approach.
- Technologies: MVS, PL/1, CICS, JCL, TSO, REXX, DB2, DCF, Lotus Notes, Xpediter, Hiperstation, File-Aid, Abend-Aid, Data Ager, Windows NT.
- Ensured quality assurance of the converted software.
Data Center Optimization (MVS)
Luftwaffe
- Federal agency: implemented measures to optimize applications for the Bundeswehr data centers' 24/7 service.
- Developed REXX procedures with a dialog manager.
- Converted PL/1 – IMS DB/DC programs, JCL, DB2.
Application Developer
Merchandise Management System Development
- Developed a merchandise management system with Visual FoxPro 3.0.
Team Member for Insurance Field Service Info System
Gothaer Versicherung
- Developed and introduced an insurance field service information system on Windows (FoxPro).
- Created a migration program in MS-FoxPro for data-driven transfer of COBOL data into MS-FoxPro databases.
Managing Director and Founder
proCASE GmbH
- Produced and marketed PC software products.
- Created a development environment (BrainStorm) for rapid client-server application development in Clipper for MS-DOS.
- Developed a Seminar Information System (SIS) for Versicherung Deutscher Herold, Bonn (1993-1994).
- Developed a complete merchandise management system (WWS) for Industrie-Plastic, Bonn as a client-server system in a Novell network (1993-1994).
- WWS covers purchasing, inventory management, sales, and the interface to financial accounting.
- Documented the data modeling with ERWin.
Development of a DB2 security concept
Federal Armed Forces Data Processing Office
- Worked on developing a security concept for the Federal Armed Forces Data Processing Office in Bonn.
- Development using DB2 and PL/1.
DB2 consulting
Federal Armed Forces Data Processing Office
- Led DB2 consulting at the Federal Armed Forces Data Processing Office in Bonn.
- Introduced DB2 in various projects and reviewed security-related aspects.
- Database design and data modeling.
- Worked on the SEU project in selecting process models (V-model etc.).
Application Developer
Swiss Bank Corporation
- Project in COBOL and IMS DB/DC for building finance, mortgages, and credit operations.
Co-founder and Managing Director
CISS GmbH
- Founded CISS GmbH in Bonn.
- Developed an insurance field service information system for OVB (retirement planning, building finance calculations, life insurance quotes, home contents and fire insurance, etc.).
- Developed programs in dBase/Clipper on PCs in parallel.
- Developed the BrainStorm program generator between 1985 and 1990.
- Passed the trainer certification exam at the Bonn Chamber of Commerce and Industry (1988) and trained 5 apprentices as IT clerks until 1993.
- Trained users on the applications created.
System consulting and project management
Federal Armed Forces Data Processing Office
- Led an IT project for the payroll system for the Ministries of Defense, Finance, and the Federal Office for the Protection of the Constitution.
- Analysis, design, and IT project management with implementation using HIPO, flowcharts, PL/1, TSO, JCL, IMS, ISPF dialog manager, and CLIST.
- Managed 40 staff to complete in 4 years instead of the planned 10.
- Developed own documentation, development, and test methods.
- Developed support generators (flowchart, pseudocode, and PL/1 code generators).
- Implemented ISPF training courses.
Business Consultant
GEDO
- Introduced an information database for personnel monitoring (WEWIS) at ADVBw in Bonn.
- Developed in PL/1 and IMS-DC with JCL.
- Installed in data centers in Kiel, Hanover, Düsseldorf, Wiesbaden, and Munich/Stuttgart.
Business Consultant
AGS
- Analyzed and designed an employee database (IMS) at Aachen-Münchener Versicherung.
- Led the project to create and implement a mortgage and property database, including loan calculation (Cobol, IMS DB/DC, JCL, TSO).
- Trained insurance clerks as IT organizers (Cobol training).
Systems Consultant
IBM
- Provided general system consulting on application needs, including requirements analysis and implementation.
- Implemented an interpretation program to identify and import master addresses into a database (GEZ, Cologne).
- Developed address interpretation modules in PL/1.
- Responsible for loading IMS databases for 22 million addresses.
- Maintained payment monitoring (GEZ, Cologne) in PL/1 and IMS.
- Applied structured programming according to IBM guidelines.
Employee
Stadt-Sparkasse Gelsenkirchen
- Employee at the savings bank after completing the banking apprenticeship.
Banking Apprenticeship
Stadt-Sparkasse Gelsenkirchen
- Completed training as a bank clerk.
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Insurance (37 years), Information Technology (21.5 years), Government and Administration (17.5 years), Healthcare (11.5 years), Banking and Finance (8 years), and Manufacturing (5 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (51 years), Quality Assurance (20 years), Product Development (17 years), Project Management (14 years), Finance (6 years), and Customer Service (4 years).
Summary
- Industry-neutral implementation of software projects with intensive business process analysis. Tools used: ARIS and ADONIS.
- Extensive industry knowledge in the insurance sector: extensive project experience in all core insurance processes: policy administration, property & casualty and life, commercial liability, sales management, commissions, mortgages / home loans, motor vehicle insurance. Experience in migration projects. Field sales experience.
- Strong industry knowledge in the banking sector (trained bank clerk). Projects in mortgages, home loans, factoring, lending business, securities trading.
- Agile project management at various scales: studies, analysis, implementation up to production launch. Responsibilities included internal management (functional and technical design, planning, team leadership, coaching and consulting), external representation in control boards, and rollout including staff training.
- Long-term experience as an application developer on IBM mainframes using standard systems and development environments (MVS, IMS, CICS, DB2, COBOL, PL/1, etc.) as well as in the client-server environment (UNIX, Windows, Oracle, DB2, C, C++, Java, XML, PHP, VB, Clipper, etc.). Specialist in database design, programming, and administration (IMS, DB2, Oracle, mySQL, MS-Access), data modeling in the data warehouse ETL area with Cognos and PowerPlay. Years of experience creating reports (Crystal Report, Cognos, MS-Access). Use of change management tools: ClearCase etc. for software development in large teams with roll-out and deployment.
- Long-term experience as a test manager in mainframe and client-server environments. Creation and implementation of many concepts highlighting the need for testing from the first phase through maintenance and support of projects. Use of tools including CONTINUUS (PT), Compuware (FILE-AID, XPEDITER, HIPERSTATION, ABEND-AID, DATA AGER), SQS (Kadett), HP/MERCURY tools (LoadRunner, WinRunner, TestDirector), RATIONAL (ClearCase, ClearQuest).
- Mastery of analytical methods (data modeling, structured analysis, object-oriented analysis, etc.), creation of requirement specifications, development of test strategies.
- Training experience (data modeling, ISPF, analytical methods, IDE).
Skills
- Machine Systems: Ibm 370, 43xx, 30xx; Siemens 77xx; Sun Solaris; Personal Computers Since 1982
- Operating Systems: Z/os (Formerly Mvs, Os390), Cms, Cics, Ms-dos, Windows 7, 8, Unix, Aix, Mac Os X, Ios
- Programming Languages: Pl/1 (Since 1974), Cobol (Since 1972), Rexx (Since 1996), J2ee, Java (Since 1997), Javascript, C (Since 1992), C++ (Since 1992), Natural (Since 1984), Rpg (Since 1973), Html, Xml (Since 2000), .Net (Since 2001), Xbase (Clipper Since 1985, Ms Visual Foxpro Since 1995, Dbase Since 1982), Vba (Since 1999)
- Ide: Eclipse, Jbuilder, Powerj, Ibm Rational Rsa
- Database Systems: Ims Db/dc, Adabas, Db2 (Host), Db2 Udb Aaa, Oracle, Xbase, Ms-access, Visual Foxpro, Solid, Centura/gupta Sql*windows, Poet, Mysql
- Configuration Management: Pvcs, Synergy/cm (Formerly Continuus), Clearcase (Rational), Sourcesafe (Microsoft), Sclm, Endevor, Tortoise Cvs, Ispw
- Supporting Software (Host): Tso/ispf, Racf, Clist, Rexx, Continuus, Natural, Roscoe, Delta, Iew/adw, Sap, Dcf, Jcl
- Groupware Tools: Lotus Notes, Mozilla Thunderbird, Ms Outlook
- Test Tools: Continuus (Pt); Compuware (File-aid, Xpediter, Hiperstation, Abend-aid, Data Ager); Sqs (Kadett); Hp Alm; Hp/mercury Tools (Loadrunner, Winrunner, Testdirector); Rational (Clearcase, Clearquest)
- Dwh Tools: Cognos 8 Framework Manager, Cognos 8 Report Studio
- Gpm Tools: Adonis, Aris, Ibo, Innovator, Ms Visio
- Design/generation Tools: Uniface, Innovator, Rational Rose (Oo-tool, Rsa, Rda), Visual Promatrix, Business Objects (Bo), Crystal Report, Visual Café, Together J, Business Objects, Etl-tools
- Data Modeling Tools: Silverrun, Erwin, Xcase For Foxpro, Doctohelp, Ibm Rational Rsa And Rda
- Web Tools: Ibm Rational Rsa, Ms Frontpage, Dreamweaver, Netobjects Fusion, Planet, Adobe Golive 6.0, Ibm Websphere, Shop2date, Html, Php, Wordpress, Ms Internet Explorer, Ms Office
- Planning Tools: Ca-super Project, Ms Project, Artemis
- Ticket Systems: Ibm Helpdesk, Ados Helpdesk
- Organizational Methods: Hipo, Structured Programming According To Ibm Guidelines, Vetter Method (Erm), Oop (J. Rumbaugh, Booch), Uml
- Business Administration Products: G+s Fibu
- Office Products: Ms Office, Openoffice, Quarkxpress 9
- Apple Tools: Itunes Producer, Ibooks Author, Xcode
- Own Products: 'Testing In Maintenance' Concept (Platform-independent Concept For Reusable Tests); Brainstorm (5th Generation Application Generator, >400 Installations); Sis (Seminar Information System, >70 Installations); Ovb-is (Insurance Field Service Information System, >500 Installations); Wws Merchandise Management System; His Sales Agent Information System
Languages
Education
Business Administration
Stadt-Sparkasse Gelsenkirchen
Bank Clerk · Gelsenkirchen, Germany
Secondary School Certificate
Certifications & licenses
Instructor qualification exam at the IHK in Bonn
State-certified Business Economist IT
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