• Born June 19, 1963 in Hamm/Westphalia, unmarried

• Study of mathematics and computer science (Technical University of Braunschweig, Germany)

• Exceptional analytical understanding combined with excellent mental grasp
• Reliable intuition for successful solutions
• Systematic, sensibly planned, methodical application of procedures
• Efficient application of conceptional ideas to pragmatic, operational solutions
• High awareness of quality
• Exceptional commitment
• Competence and professionalism
• Strong sense of responsibility
• Ability and willingness to work in a team
• Communicative, helpful and open-minded

• Professional since 1984, private since 1979
• Freelance projects since 1989 (more than 23 years in projects)
• Freelance instruction since 1992 (more than 300 days as instructor)

• Architecture of object- and business process-oriented systems
• Distributed applications (Java EE/J2EE, Spring, Web Services)
• Workflow management systems (development of integrated WfMS for several years)
• Database management systems
• Java, C/C++, Smalltalk
• Android Development
• Project leadership (technical domain)

• Banking/finance
• Insurance
• Administration/authorities
• Industry (car)
• Telecommunication (mobile phones)
• Research, development, university

Excellent experience:

• Java (up to JDK 11.0, more than 15 years)
• C/C++ in different programming environments (more than 10 years)

• Smalltalk (IBM Visual Age, Cincom Smalltalk ObjectStudio) (3 years)
• Informix ESQL/C (2 years) and 4GL (4 years), Oracle PL/SQL (basics)
• Modula-2, Pascal, OCCAM, BASIC, Prolog, Fortran, Cobol, various assembler languages (80386, 68000, 68HC11, Transputer), Tcl/Tk, Unix shells, Windows command files

• Various Unix systems (System-V as well as BSD, Linux - more than 17 years)
• Windows 10, XP, 2000, NT 4.0, 95 and 3.11, MS-DOS (more than 15 years)
• Android 11
• Docker 19.03.15
• Raspberry Pi, BeagleBone Black, Arduino, CPM/68k, 68HC11 (embedded system), 68000-based systems, Transputer

• UML, OMT (8 years)
• Design Specific Languages (DSL)
• Model Driven Architecture (MDA)
• Design patterns (GoF, Java EE/J2EE etc.)
• IBM Rational Rose 98i, 2000e and 2003 (4 years; incl. RoseScript)
• MID Innovator 2009 (2 years)
• Paradigm Plus 3.5
• Aspect-oriented software development
• Application frameworks

• Implementation of application server technology (components, object containers, distributed object transactions, transparent persistence, activation/deactivation, life cycle, deployment, generation from UML or DSL etc.)
• Java EE/J2EE
  • Java EE 6
  • Enterprise Java Beans (EJB) 3.1
  • Java Servlet Programming
  • Spring Web-Services 2.0.2
  • Java Server Pages (JSP)
  • Java Database Connectivity (JDBC)
  • Java Transaction API (JTA)
  • Java Message Service (JMS)
  • Java Naming And Directory Interface (JNDI)
  • Java Management Extensions (JMX)
  • Java Persistence API (JPA) 2.0
  • Hibernate 3.6.10 and 4.2.18.Final
  • IBM Websphere MQ 7.0.1.5
  • JBoss EAP 7.3.0, JBoss AS 5.5.0 Final, BEA WebLogic Server (WLS) 6.1, 7.0, 8.1 and 10.3, IBM Websphere 6.1, Oracle IAS 10g
• Web-Services
  • JAX-WS 2.2
  • Apache CXF 2.7.14
  • Spring Web-Services 2.0.2
• Message Broker
• MQTT
• CORBA 2.3 and 2.4 (3 years)
  • Naming Service (CosNaming)
  • Notification Service (CosNotification)
  • Persistent State Service (PSS)
  • Object Transaction Service (OTS)
  • BEA WebLogic Enterprise (WLE) 4.0 and 6.1
  • OpenORB 1.3.0
• COM/DCOM (1 year)
• RPC
• BEA WebLogic Portal (WLP) 4.0, 7.0 and 8.1
• Jakarta Struts 1.1
• WEB-Server Apache 1.3.12
• Tomcat 6.0.18 and 7.0

• Development of object-oriented workflow management systems for several years
• Business process modeling
• BEA WebLogic Integration (WLI) 7.0 and 8.1

• SQL (more than 17 years)
• Oracle 8.0, 9i and 10g (3 years, Unix and Windows/NT)
• IBM DB/2 7.1 to 10.5 (5,5 years)
• PostgreSQL 9.0 to 12.7 (4 years)
• Informix (Unix) (more than 5 years)
• PL/SQL
• Watcom SQLAnywhere (Windows/NT) (1 year)
• Microsoft SQL-Server (Windows/NT) (basics)
• Microsoft Access 97 (Windows/NT) (basics)
• JDBC (Oracle Thin and OCI driver)
• ODBC (Windows/NT) (basics)

• Altova XML Spy 3.5 to 4.2
• JAXB 2.2.5
• Jackson 2.12.5
• Xerces-J 2.6.2, Xerces-C 1.1.0
• XSLT, XSL-FO
• Xalan-J 2.7.1, Saxon 7.6.5a
• Apache FOP 1.0
• iText 1.3

• Eclipse 2.0.2 up to 2021-09
• Android Studio 2020.3.1 Patch 2
• NetBeans 3.4 (Forte for Java, Sun ONE Studio 4)
• BEA Weblogic Workshop (WLW) 8.1
• Symantec Visual Cafe 3.0c and 4.0a
• IBM Visual Age for Smalltalk 3.1 and 4.0
• Cincom Smalltalk ObjectStudio 5.2
• Arduino-IDE
• gcc 9.3.0
• Microsoft Visual C++ 6.0
• WindRiver SNIFF+ 3.2.1
• IBM Rational ClearQuest 2002, 2003
• IBM Rational ClearCase 3.2.1+
• IBM Rational Synergy 7.1.0.1
• Git 2.28.0
• CVS 1.11/WinCvs 2.0.2
• Microsoft Visual Source Safe 6.0
• Merant Dimensions 9
• Spring, Spring Webflow, Spring Transaction, Spring Web 3.1.0
• JUnit 4.13.0
• Findbugs 1.2.0
• Easymock 3.0
• JMockit 1.17
• Arquillian 1.1.3
• SonarQube 8.9.1
• Checkstyle 6.8.1
• Gradle 2.4
• Apache Maven 2.0.11
• Apache Ant 1.5
• XDoclet 1.2
• IBM Rational Purify
• JProbe Suite 6.0
• JProfiler 6
• lex/yacc, ANTLR 2.7.2
• Velocity 1.5
• JAAS, JSSE, SSL/TLS
• SoapUI 5.0.0 und 5.1.3

• JFC: Swing, AWT (Java)
• Eclipse RCP/JFace (Java)
• Java Server Faces (JSF)
• MFC/ATL, GTK+, QT (all C++)
• IBM Visual Age, Cincom Smalltalk ObjectStudio (Smalltalk)
• Tk (Tcl)

• Scrum

• MS-Office, LibreOffice, Lotus Notes, LaTeX
• English fluently
• Both 1981 and 1982 achievement of a second place of 'Bundeswettbewerb Mathematik'