public class Welcome {}

Here is the short version of my professional carrier:

I started software development almost 40 years ago when I was 14 years old on an BASF 7130 programing Basic

I went to the “adult education center” to learn Tubo-Pascal and sold my first software when I was 16 years old.

I studied computer-science at the Technical University of Berlin.

I financed my studies programming Delphi and Java as well as installing computer networks for Windows NT.

As an employee, I developed software for the banking industry e.g. developing online-banking-software and multiple enterprise application integrations e.g. to the Berlin-Stock-Exchange, IBM Host 3270, Brokat, Miles & More, lots of other systems

After six years I changed the industry and build, developed and customized community and collaboration software like Jive Software.

Another Six years later I started to found my own business.

I have been working as an entrepreneur for the last 14 years. I have managed 30 employees and worked with international companies and people around the world – generated a total revenue of +30 Mio Euro.

I have worked in all roles in the software business: (senior) developer, technical lead, software architect, professional services, product-manager and CEO.


The last couple of years I got a bit tired of balance-sheets, marketing, lead-generation and personnel responsibility and managing a company.

That is why I want to focus again on what I really love: software-Development and programming.


Technology Overview:

  • Programming-Languages

    Java, Python, Java-Script, HTML, CSS, XML, JSON, JSONPATH, Clojure, bash

  • Databases

    Postgres, My-SQL, MS-SQl, DB2, Oracle,

  • Middleware

    Tomcat, Apache, Websphere, JBOSS,

  • Frameworks

    Spring, Spring Roo, Struts, JQuery, Freemarker, Soy, JSP, Hibernate, EJB, JSF

  • CI/CD

    JUnit, Jenkins, Nexus, Git, Cobertura, Checkstyle, Findbugs,

  • Tools

    Eclipse, RapidAPI, Jive

  • OS

    Linux, Mac


Experience:

I worked on +100 projects in the last +25 years.

Mostly I did “Enterprise Integration Projects”, Web-Developement, Webservices & APIs (Rest, Soap), Oauth 2, Interfaces, data-mapping and transformation, feature developement, customisations, …

Latest Projects:

07/2023 – 05-2023: Schaeffler: Intranet Data-Migration

Data migration of the intranet of 80,000 employees from Jive to SharePoint. Development of a script in Python that saves the data via oAuth and rest in JSON format, rewrites and prepares the data and references for images, videos, attachments, links, etc. for import into the new target platform.

Products: RapidAPI, Jive, SharePoint

Technology: Python, API, REST, oAauth2, JSON, JSON-Path, HTML, CSS

10/2022 – 07-2023: Porsche: Upgrade Intranet

Upgrade of the intranet (Carrera Mobil ) based on Jive.

Products: Jive, Eclipse

Technology: Java, Spring, Struts, HTML, CSS, Freemarker (ftl), Clojure (Soy)

Customers

Here is an excerpt of the customers I worked for:

Scroll to top