Kay Spiegel
Product, People & AI
Remote from Germany
Articles
The Smallest Sensible Rails Stack, Behind Roadletter Lite
(1
st
November 2026)
Why I Am Building My Own Newsletter Tool, in Public
(26
th
October 2026)
Stop Talking UX. Start Talking Money.
(8
th
August 2026)
I Built an AI Tool That Refuses to Make Up Numbers
(27
th
July 2026)