Have a look at my work and my own projects.

  • Team Conductor
  • Progressive web app, Android app and iOS

    We support all major platforms.
    Find your apps in the Google Play Store and Apple's App Store

  • Our event module

    with attendance count, ready to review who attended.

  • Our finance module

    Manage your statements with receipts, create a zip file or a single pdf with all your collected receipts for the yearly cash audit. In minutes!

Team Conductor

Managing your club or association was never easier. Communicate with your members using short messages, emails, letters, and conduct surveys. Be ahead of your finances and manage events knowing who have to attend.

I am the creator and developer of the whole project. Over a period of 1.5 years, I created a multi-tenant web platform (PWA), Android and iOS apps, a product website (English and German), social media accounts (Instagram, Twitter and Facebook).

Technology and Frameworks

Java 8, Spring Framework, Hibernate, SQL, Restful API, OAuth2, JWT, Cors, TypeScript, Angular 6+, Capacitor, RxJS, GIT, Bitbucket, Jira, PDF manipulation, Excel and Word file generation, iCal, vCard.


We use Amazon Web Services (AWS) as our hosting provider. TC uses services like Elastic Beanstalk, RDS, SES (Transactional email), SQS (Queue), SNS (Notifications), S3 (Storage), EFS (Network Storage), and CloudFront.

  • Great product and great team

MUM - Masters Everything

Master Data Management solution. I worked for and developed MUM for 9 years. As a software architect in a small but very experienced team we build a great, very generic product running on multiple databases. I was also responsible for bringing the application to Azure app services and integrate it with various authentication providers like SAML 2 (ADFS) and OAuth2 (Azure AD).

Technology and Frameworks

Java 5-8, Spring MVC, Spring Java Config, Spring Security, LDAP, Kerberos, Active Directory, SAML2, Azure AD (OAuth2), GWT, Vaadin, JSP+JSTL, JQuery, Camunda BPM, Eclipse BIRT, Hibernate, Liquibase, MS SQL Server, Oracle, Gradle, Git, SVN, JVM based Scripting JavaScript Rhino+Nashorn, Groovy, Azure App Services, New Relic APM, Tomcat 6-8.5, Apache Http 2.x


  • 2016-2018

    I created a Vaadin addon for the very popular ChartJS 2.x library. It has a very nice fluent api and a extensive demo. As soon as somebody hires me for another Vaadin project I will return working on that. ;)


  • 2019

    I currently create plugins for Ionic Capacitor. I use my experience with open source and OAuth and give something back to the community.

Open Source Work

Everybody uses open source technologies for their work, but few give something back. As a freelancer, that's not so easy to do, but I'll try to at least report issues and eventually create some useful stuff for others.


Java, TypeScript, Swift 4+ , JavaScript, Capacitor, ChartJS 2.x, Vaadin 6-8, Fluent API style, Mark down, Github, GIT, XML and JSON generation, documentation, Readme, project management

Current Projects

Capacitor OAuth2 ... Simple and generic plugin for Capacitor letting you configure providers instead of having to integrate with all the SDKs
Capacitor FileSharer ... Downloading files
Capacitor SMS ... Sending SMS on Android