Hello, I’m Reinder.

I’m a creative coder and software engineer based in Utrecht. Currently, I work at Monks (since 2015), where I work on interactive 3D and web projects for global clients. In my spare time, I build platforms that let other people make things with code.

What I’m working on now

Eigen is a privacy-focused, European alternative to Google Workspace where you own your data. Six months in, it has ten apps: mail, drive, docs, sheets, slides, calendar, contacts, chat, kanban and admin. Real-time collaboration where it makes sense, IMAP and CalDAV for external clients, per-user file-based storage. More in the blog posts about building it and six months later.

I’m now looking for the right home for the project: an organization, foundation or company that wants to adopt Eigen, or people with experience growing open-source and public-interest tech projects. I’m not attached to keeping ownership and I’m not looking for money. I want Eigen to exist and to work.

If that sounds like you, or you know someone, please reach out at reinder@eigen.is.

Update: Eigen is open source now (https://github.com/eigen-is/eigen)! Have a look at the code and install your own Eigen instance on your server.

Platforms

I tend to build platforms rather than one-off projects. What they share is restriction (a small API, a single shader, a square canvas). By offering a restrictive environment, I hope to stimulate creativity.

I build these for the love of making things. If you want to sponsor me or buy me a coffee, it is much appreciated. More than anything, I value your feedback.

Digital experiments

Background

My roots are in the sciences. I studied Physics (master) and Mathematics (propedeuse) at Utrecht University.

In 2003 I co-founded Infi, a software agency, where I spent ten years building the technical foundation of the company. After that I took a sabbatical to coach rowing at international level, including Inge Janssen (Bronze EC Seville 2013, Finalist WC South Korea 2013) and Claudia Belderbos (National Champion W1x). I am an Honorary Member of A.U.S.R. Orca. In 2015 I returned to code and joined Monks.

Some past work: a real-time Wolfenstein ray tracer in WebGL1 (2019), The Uncensored Library in Minecraft (with DDB Berlin for Reporters Without Borders), and third place at JS1k 2014 with a 1024-byte Minecraft renderer.

Get in Touch

The best way to keep up with my activities is to follow me on Bluesky or GitHub.

I’m open to new opportunities, and always up for a conversation about meaningful projects, Eigen, creative coding, or generative art. Email me at: reinder@infi.nl, or find me on LinkedIn.