Current projects

  • SignDict logo

    SignDict

    SignDict.org is one of the leading dictionaries for the German Sign language. 95,000 unique users per month use the site to learn this wonderful language. I build this site as part of the first batch of the Prototype Fund and continue to maintain it. The code can be found on GitHub.

    • Elixir
    • Vue.js
    • Postgres
    • Redis
    • FFmpeg
  • Wishlephant logo

    Wishlephant

    Shortly before our kid was born we had the problem that lots of people asked us what we could need as baby shower presents. We tried to organize it using email and an Excel sheet and quickly realized that this didn't scale. After looking into tons of websites that offer a gift registry, I realized none had what I wanted or looked really dated. Together with my wife I build a page that was perfect for us. Wishlephant.com currently has around 5,000 unique visitors a month.

    • Elixir
    • Stimulus.js
    • Postgres
  • Hier Baut Berlin logo

    Hier Baut Berlin

    With Hier Baut Berlin I am part of the 9th round of the Prototype fund. My goal is to create a tool to inform citizens of Berlin about changes in their neighborhood. For example, street construction, new bike paths, information about ways to participate in key decisions in the neighborhood.

    Currently, this information is available, but scattered on 20-30 pages. When this project will be finished, you will see everything on one map. It will also be possible to subscribe to changes via email. Never miss an important update anymore.

    The code can be found on GitHub.

    • Elixir
    • Stimulus.js
    • Postgres
    • Pd3f

I also maintain a couple of smaller open-source libraries and tools. Check out my GitHub profile for a complete list.

Past projects

  • Airy logo

    Airy

    From 2018 till 2021 I was freelancing for Airy as part of their React.JS frontend team. Airy is an open-source conversational platform to power conversations with an open source Website Live Chat, Messengers like Facebook Messenger, WhatsApp and more.

    The code can be found on GitHub.

    • TypeScript
    • React
  • Image of a sloth emoji

    Sloth Emoji

    An emoji? Yes! Did you know that you can write a proposal for Emojis? I got lucky and my proposal for the sloth emoji was accepted and now the sloth can be found on every phone and laptop 🎉.

    I hopefully made the world a better place with adding the 🦥 emoji. Also want to create an emoji? Join the emojination slack, and they will help you make it happen.

  • Bitcrowd logo

    bitcrowd

    For a couple of years I was a co-owner of bitcrowd, a berlin based web agency. During my time there we helped many startups to be successful businesses. We build the first code for startups like time:matters, Liefery, Krautreporter and many more.

    • Ruby on Rails
    • Angular
    • React
    • Postgres
    • Redis
  • putpat logo

    putpat

    From 2009 till 2013 I was part of putpat.tv. Putpat tried to re-invent music television for the modern internet age. With over 50,000 videos and a smart algorithm to create channels based on your taste profile it was loved by a huge user base. Since it was a relative small team of developers, I was responsible for many client applications. Starting with software that ran on TVs to more classical Android and iOS apps. Besides that, I build parts of the ingestion and tagging platform.

    • Ruby on Rails
    • JavaScript
    • Objective-C
    • Java
    • Postgres
    • Redis
    • FFmpeg
  • TV-Browser logo

    TV-Browser

    TV-Browser is a Swing based open-source desktop TV guide for more than 1,000 TV stations. I was the lead developer till 2011 and in its peak it had over 150,000 active users. The code can be found on SourceForge.

    • Java
    • Swing