Apps, and the servers behind them.

I'm Jop Middelkamp, a freelance developer in the Netherlands. Through Middelkamp Development I build mobile apps for iPhone and Android, and the back ends they talk to.

Email me
GitHub

About me

I take an app from the first idea to the stores: the design, the app itself, the server it needs, and the release pipeline that ships it.

I like small, sharp products that do one thing well, and I build the tools I miss along the way.

Flutter and Dart
React Native and Expo
TypeScript
C# and .NET
Rust
Docker

Products

Ergates

A mobile app for Hermes Agent. Chat with the AI assistants on your own server, create new ones and manage them from your phone.

About Ergates
Source code

Code on GitHub

Personal github.com/jopmiddelkamp My own projects and open source, such as Ergates and gflow, a Git workflow tool written in Rust.
Middelkamp Development github.com/middelkampdev Work for clients and the company's own packages.

Work with me

Need an app, or a back end for one? Send me a few lines about your idea.

jop@middelkamp.dev