2/17 to present - Developer, german hypermarket chain

Developing services on the base of OSGI, J2EE, cxf, spring, jdbc, maven, TREND framework and other technologies.

05/16 to 01/17, developer, Bayer

Developed various small tools for research, using D3 javascript lib, mybatis, mongoDB, jax-rs, spring and other libs and technologies.

01/14 to 4/16, architect, LHIND

Migration from monolith to service oriented architecture and architect a web client with JSF and primefaces.

10/12 to 12/13, Developer, european electronic retailer

Program some business software with SOAP over JMS, tibco, jdbc and TREND framework.

8/12 to 9/12 - Developer, GEBIT

Programming replication mechanism for the parameter server product. Using JMS and hornetq bridges.

5/12 to 7/12 - Developer, german hypermarket chain

Developed a mobile device solution in C# for compact framework 3.5, ultralite database, MobiLink and BeeMobile controls.

1/12 to 4/12 - Developer, GEBIT

Programming replication mechanism for the parameter server product. Using JMS and hornetq bridges.

12/11 to 12/11 - Developer, Bayer Business Services

Programming financial controlling prototype with TREND stuff, POI, JSF facelets and javascript.

11/11 to 11/11 - Developer accesslayer, GEBIT

Bugfixing and refactoring for the accesslayer of TREND.

9/11 to 10/11 - Developer, DM

Programming TREND stuff and jPOS hardware including tricky fiscal hardware.

4/11 to 8/11 - Developer, RSC

Programming assessment system with TREND stuff, JSF and javascript.

2/10 to 3/11 - Developer, DM

Programming TREND stuff and jPOS hardware including tricky fiscal hardware.

10/09 to 1/10 - Developer, Esprit

Implement cooperation of java based systems to SAP system.

10/06 to 9/09 - Developer, DSA

Development of eclipse RCP based product for automotive testing which interfaces with ASAM standard kernels. Also developed ODX Export of authoring data to ODX 2.0.1 or 2.1 standard. Involved technics and standards are ASAM, ODX, SWT and eclipse RCP.

5/06 to 9/06 - Developer, Lufthansa Systems

Migration of a complex asset software written in Visual Age Smalltalk into Java with the help of MOVE (rule based compiler for Smalltalk to Java). Analyse, writing move rules, parsers, sample use case coding, ...

8/05 to 4/06 - Developer, RSC

RSC is a company that handles all IT business of the C&A trust. Reviewed and reworked several usecases and developed 3 usecases myself. The developed software is a plain business software developed in Java with Jdbc (DB2 for zOS) and JMS (MQSeries).

7/05 to 7/05 - Developer, GFD

Developed several managability extensions in JMX in order to remote control application on servers of many branches.

6/05 to 6/05 - Tester, Programmer, Bayer

Wrote a tool for automatic testing of an webapplication based on log files. The tool generated testcases that where human readable and easily modifieable because they were generated into an excel sheet in a special syntax. Also did some stress and load tests with emma and these tests.

1/05 to 5/05 - Developer accesslayer, GEBIT

Performance enhancements and bugfixing for the accesslayer of TREND. Support for different customers (IVU, GFD, Toyota, RSC and others).

11/04 to 12/04 - Developer for a prototype, GFD

Task was to build a pda application that performs various task such as display current information about products, scan barcodes, stocktaking, monitor location of goods etc. It communicates via wireless lan to a server. Tested technologies under J2ME were webservice (document/literal), RMI, J2ME, SSL, SWT and AWT.

11/00 to 10/04 - Technical project leader, USU

Writing specifications, teaching and designing a product that is in development by a international team (18 programmers in 4 branches) basing on several standards such as EJB, JAAS, ... The product is very generic regarding GUI and access layer (new database tables at runtime), consists of 3 tiers, has a rich client as well as a thin (WEB) client, allows single sign on as well as authentification against LDAP, database or operating system. It incorporates interfaces to SAP, XML (data import and export). It has a COM-API for integration and other purposes. The product includes a workflow engine and a GUI for creating and editing workflows. This, the scripting engine and many customizers (with GUI) help the user to customize the product to a very high degree. Runtime multilanguage support is incorporated as well (allows to switch the language at runtime).

10/00 to 10/00 - Troubleshooter, Wüstenrot

Fixed a lot of source code that was developed by a Java junior team.

7/99 to 9/00 - Performance Analyst and Senior Application Developer, IFS

Working in one of the largest Java projects in Germany. Responsible for the performance tuning of a part of the application that deals with high data loads.

8/98 to 6/99 - Performance Analyst, RSC

RSC is a company that handles all IT business of the C&A trust. Did the code review and the performance tuning of warehouse disposition program. Used VisualAge for Java, the TREND/Java Business Framework and SQL.

3/98 to 7/98 - Java Architect and Teacher, RSC

Developed a POS (point of sale) prototype and teaching the team.

1/98 to 2/98 - Quality Manager, GEBIT

Tested the MOVE-Framework, a tool developed by GEBIT that converts ObjectStudio code (Smalltalk code) into Java code. By the way the only Smalltalk to Java converter that works properly.

1/97 to 12/97 - Smalltalk Programmer and Teacher, RSC

Developed with a team a complex program that advises and records quality checks and logistic control flow of goods.

4/96 to 12/96 - Developer, GEBIT

Designed and programmed a generator that creates dynamic loadable libraries (generating C code plus embeded SQL) for static SQL that then can be used within a Smalltalk environment (ObjectStudio for OS/2). Ported on AIX by order of CINCOM.