Work with me

I'm a developer from Hamburg, Germany, and you should totally hire me.

I wrote my first HTML page before Windows 95 was released and discovered the potential of the internet before Bill Gates did. But I didn't stop there. Over the years, I have created websites and web applications with varying languages, frameworks and tools, I managed servers in the cloud and next door, and I worked together with many brilliant people on numerous exciting projects, commercial and open source.

I got my formal education at the RWTH Aachen and European Research Center for Information Systems Münster, where I received my Master of Science degree (graded "sehr gut", which means "A"). During my studies, I ran a small company called FireDesign with a fellow student, so I could apply what I learned at university or otherwise. My Master thesis was about performance monitoring and tuning in the frontend, which was a quite new field when I wrote about it.

Most of the stuff I do nowadays is somehow related to Ruby on Rails, Elixir and JavaScript apps. In fact, Rails is what got me into professional web development in the first place. Today JavaScript single page apps are state of the art of the web. I have worked with ReactJS, VueJS and Ember.js to create commercial client side web applications, supported by Rails or Elixir in the backend. This means I also created several Rails & Elixir based REST and GraphQL APIs.

I'd love to work with you on your applications! In the past, I have worked with these fine folks:


  • Add new features to user profiles app implemented in Ruby on Rails.
  • Start a new product with a remote team in Porto (Ruby on Rails/ReactJS)
  • Set up technical infrastructure and integrate into existing platform (Jenkins CI, Kubernetes deployment)
  • Hiring interviews
  • Onboarding of new employees

  • Prepare landing pages for global launch.
  • Improve Rails based API
  • Improve EmberJS based UI app


  • Start a new insurtech company
  • Elixir/Phoenix backend
  • ReactJS web app
  • ReactNative mobile apps for iOS/Android
  • API via GraphQL


  • Develop several frontend apps for the OMR19 Festival
  • Rails backend (API and admin interface)
  • VueJS frontend apps
  • OpenID Connect for authentication
  • Kubernetes for server infrastructure


  • Backend programming with Ruby
  • Devops automation with chef
  • 3rd party integration


  • Software architecture
  • Prototype implementation with Ruby, Rails and AngularJS


  • Extend the existing EmberJS application for the customer interface
  • Extend the existing JRuby backend

SPD Hamburg

  • Write a new application for local members
  • Design, UX
  • Frontend Single Page App with EmberJS
  • Backend with Ruby on Rails
  • Infrastructure automation with Ansible


  • Extend existing full stack Play Framework application written in Java 1.8


  • Help the standing development team to develop a hybrid EmberJS app running on iPads
  • Support the developers with Q&A sessions (remote and onsite)
  • Onsite development to solve specific problems

If you are interested in working with me, shoot me an email to ralph at!!