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Machiel Reyneke

Machiel Reyneke

Fire engineer turned product manager. I build tools for myself and write about what I learn.

Currently

Leading growth at 10X Investments. Reading, writing, building and parenting and sometimes photographing.

Writing

The Circle Packing Problem For a Watertight Nuclear Strategy Apr 2026 The numbers don't add up. But I've been preparing anyway. Our Real Plan Apr 2026 A field guide for the newly liberated. Big Boys Mar 2026 A poem about fatherhood, time, and what matters.
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Reading

Cover of The Power Broker: Robert Moses and the Fall of New York The Power Broker: Robert Moses and the Fall of New York Robert A. Caro Cover of Poor Charlie's Almanack: The Wit and Wisdom of Charles T. Munger Poor Charlie's Almanack: The Wit and Wisdom of Charles T. Munger Charles T. Munger
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Photos

Miscellaneous, March–April 2026
Miscellaneous, March–April 2026 Western Cape, South Africa
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Projects

Tools I've built for myself. Not startups, just solutions to my own problems.

Slate

Todo and note app (2026)

Graph-based todos and notes for power users and their AI assistant.

Runistry

Analytics for Garmin runners (2025)

Because if you really like data and want to geek out, you need your own VO2Max algorithms.

Eskom Dashboards

Load shedding visualized (2023)

I needed the dashboards to know whether the problem was terminal or not!