Bio

Hi, I’m Johannes – a builder, speaker and music fan from Germany.

I’m currently building Overtone, a local-first music app that unifies your music library across various streaming services (Spotify, Youtube, ...) and personal collections.

I love the craft of software engineering and run the localfirst.fm podcast. I’m also involved in the Effect TypeScript ecosystem. Previously, I founded Prisma with the goal to make working with databases easier.

I also enjoy helping founders on their journeys building developer-focussed products and companies.

Sponsor

Speaking

Effect: Production-grade TypeScript

Feb 2024

Local-first state management with Riffle

May 2023

A New Era Of Web Development

Jun 2022

Type-safe access to your Contentlayer

Apr 2022

Setting up Nix on macOS from scratch

Mar 2022

Work

Overtone

2021 – Present

I’m building a local-first music client called Overtone which brings all your music (e.g. from Spotify, Bandcamp, Dropbox, ...) into a single, high-quality app.

Prisma

2016 – Present

Prisma is a modern database toolkit to query, migrate and model your database and is used by more than 200.000 developers to build web applications. I co-founded Prisma (Graphcool) in 2016 and was CEO until 2020. I'm still an active board member.

Optonaut

2014 – 2016

Optonaut was a smartphone-based VR app to record, view and share stereoscopic 360° videos.