frankfurt · ai, agents, e-commerce
building things that run themselves.
Hi I'm Felix. Currently vibe coding and scaling an e-commerce company. Before that I was an associate at Heartcore Capital, where I focused on deep tech: dev tooling, infrastructure and robotics.
latest writing
rss →- 2026how spacex's raptor works, one problem at a timeinteractive
- 2026the last s in saasrough thought
- 2026autonomous e-commerceessay
- 2026claude code productivity hacks 2026essay
- 2025ralph wiggum kills process miningrough thought
- 2025the (perfect) general agentessay
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- 2018codifying successionessay
an interactive explainer
how spacex's raptor works
I couldn't read the Raptor schematics in Brian Potter's article, so I built the engine up myself: seven interactive steps from a tank of compressed gas to full-flow staged combustion, then a 3D model of Raptor 1, 2 and 3.
an essay
autonomous e-commerce
openai tried to build checkout inside chatgpt.
they killed it in march.
but the merchant side? that's where it gets interesting.
things i built
mostly to avoid doing something by hand
project · 2025bundesanzeiger botI often walk around and see names of companies that interest me. Mostly how big they are (revenue and earnings) and i hate going…open source
project · 2025memecoin traderAnalyze which coins get launched on pump.fun and are spoken about on x.com - sell with 20% profit before it gets dumped.trading
project · 2024ai recruiting botI built a tool to automate the mundane tasks of evaluating profiles on LinkedIn.agents
project · 2024polymarket arbitrage botPolymarket / Traditional Sports betting arbitrage bottradingthrough the lens
tap a print to see it big
on the shelf
point at a bookRecommended by my friend Chris. It's a book i have read 3 times and gifted to other people the most.
I watched the Netflix series first, and then I read the books. The second book is a drag at first but has such a crazy satisfying ending. I love the mixture of physics concepts with sci-fi, e.g., the Fermi Paradox.
This is one of the VC/accelerationist books. Nonetheless, it's a good read to understand how we drown ourselves in regulation. It speaks to my heart as a German.
To be honest, I don't remember much of the book, but it was a good read.
Good idea but too long - just read the summary twice…
Well written and super fun!
This seems to be the most comprehensive book about hedge funds. It is interesting that, except for RenCap, nobody consistently keeps his or her edge.
This was a gift from a founder friend of mine and it grew my respect for Peter Thiel. Crazy that Vitalik was a Thiel Fellow! Also, I am glad I did not stay in academia...
I love how this ties ancient greek scientists/ philosophers together with modern physics/ quantum researchers. It is the most comprehensive summary of physical theories the stories behind them.
Dont understand the hype. Just because Marc Andreessen posted about this does not make it any good. It is such a drag to read and i did not finish it.
Bit repetitive but great insight into the commodity trading industry! Entertaining read.
lol everyone recommends this book and stupid me only read one chapter in uni. I recently re-read it and it is a masterpiece. I think all books that are written by people that do not want to write a book are exceptional.
crazy character set up - maximum entanglement of relationships and truly a page turner :)
off the clock
hobby no. 1
skiing
I learned skiing quite young and to this day it's my favourite hobby.
hobby no. 2
kite-surfing
My friends don't believe me that I can surf, because I always leave for a vacation to go surfing and then have no pictures to show for it (pretty hard to hold a bar, balance on a board and take a video). My 2024 goal was to surf independently and do turns. I also convinced a friendly guy on the beach to take a video of me. Yay!