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Engineer · Founder

I build software that holds up.

I work out what’s worth building next.

A few things I’ve worked on.

Area
01Agio DigitalFinancial software / Compliance
02AI systemsAgents / Automation / Developer tools
031GRAMWallet software
04MVRDVDigital platform / Architecture
05JIJ & OverijsselPublic participation platform
06100-100-100Sustainability campaign platform
07ArchiveDesign / Web / Software

The work has changed a lot over the years. The habit of making things hasn’t.

Moving down the stack as the web evolved.

TRAJECTORY.TXT

  1. 2005DesignLearning the web by making things.
  2. 2013ProductDesign became code.
  3. EngineeringCode became systems.
  4. 2018WalletsSoftware for a new kind of money.
  5. 2021Financial infraBuilding systems where software meets regulation.
  6. 2022AIFrom using models to orchestrating them.
  7. NowBuildingAll of it, at once.

Notes

Things I’m working on, learning or trying to understand.

  1. AIDeveloper tools for normal teams 4 min
  2. SoftwareAI makes software cheaper. Systems thinking becomes more valuable. 2 min
  3. ExperimentsJev, tiny models and strange new interfaces 2 min
  4. FinanceWhat finance looks like when software becomes an actor 2 min

All notes ►

Small working things.

Games and toys built to find something out. Two of them let Jev play: chess, and a shared canvas of a million emoji.

  1. Chess, a screenshotChessPlay Jev, a simple engine or a friend, or watch Jev play itself; in chess or any of the 960 Chess960 starting positions.
  2. 1 Million Emojis, a screenshot1 Million EmojisA shared canvas of a million emoji cells: drag to paint, watch everyone else’s strokes arrive live, and let Jev join in.
  3. Jevvie, a screenshotJevvieJevvie, the underscore from the logo, loose on the site: ask it to do something and Jev picks one of the page’s actions. Agents can drive the same actions over WebMCP.

All 7 experiments ►

I’ve been making things on computers for most of my life.

I grew up in the Netherlands and built my first websites at thirteen.

I like small teams, ambitious projects, good engineering and people who can disagree without making it tedious. I still enjoy opening an empty repository and figuring something out.

I work internationally. Outside work I train Muay Thai and like chess, which I played competitively in Zwolle and taught to primary-school children there. I also build things that occasionally have no sensible commercial purpose.

Making something interesting?

For collaborations, technical discussions, or a good reason I haven’t thought of.