— Sebastian Jorna
Founder, investor, reader, builder.
From banker, to VC to serial entrepreneur.
From reader, to meditator to artist.
Life rewards action.
01
CV
Perimenopause platform. #1-ranked in its category on the App Store, 50k+ downloads, 40%+ D7 retention.
2025 — now
LLM Ops. Raised $1.7m from Gradient Ventures. Gave LLMs tool-use; pivoted when MCPs went open source. Featured on TechCrunch.
2023 — 25
Convexity Ventures — Investment Manager / LP
Started a private fund with nine other LPs — founders, developers, lawyers.
2021 — now
Early-stage VC, deeptech & B2B SaaS. Helped structure a €120m fund. Invested in ReaQta, Oqton, Kaizo, D2X
2020 — 23
inSided — Board Observer
Acquired by Gainsight & Vista Equity Partners.
2020 — 22
Morgan Stanley — Analyst, Tech M&A
$2.2bn TeamViewer IPO (largest software IPO to date). $1.1bn Delivery Hero ⇄ Takeaway.com sell-side.
2018 — 20
Education & credentials
MIT — ASP Fellow, AI & Neuroscience
2017 — 18
Frankfurt School — MSc Finance
Top 5% of class
2015 — 17
CFA
Passed all three levels in 18 months, the shortest time possible
2015 — 17
National University of Singapore — Exchange
2015
Maastricht University — BSc Economics
Top 6% of class
2012 — 15
Oxford — Summer School, Economics
2012
02
projects
Selection of things built on the side
Turns notes into spaced-repetition cards. Closes the loop between reading and remembering.
app ↗
A curated directory of venues and vendors across North Carolina.
site ↗
A personal trainer for your home gym.
site ↗
A gentle testament & will creator.
app ↗
An AI copilot that drafts police reports.
app ↗
My own instrument exploiting four market anomalies. Listed in Stuttgart — ISIN DE000LS9KGG8.
2015 — 17
Featured on the Stocktwits “Must-Follow List” for market commentary and strategy.
2015 — 17
03
writing
My essays on Medium
Nov 20, 2023
Feb 21, 2023
(written BEFORE ChatGPT release)
Dec 2, 2022
the full list
Dec 23, 2025
Dec 27, 2024
Jan 18, 2024
Dec 19, 2023
Nov 20, 2023
Nov 11, 2023
Mar 10, 2023
Feb 21, 2023
Feb 9, 2023
Jan 10, 2023
Jan 3, 2023
Dec 17, 2022
Dec 15, 2022
Dec 2, 2022
04
books
~40 a year. The whole shelf is on Goodreads.
05
art
Expressions through paint, movement, and ecstatic dance DJ sets.
My latest Ecstatic Dance DJ set
06
meditation
Traveling Sangha NC
Host of a meditation community in North Carolina.
10d-day silent meditation retreats
Attended several 10d vipassana meditation retreats in addition to a multi-year daily practice. (2023, 2026)
07
digital brain
A decade of notes, books and ideas, linked up in Obsidian. The thinking behind it: Fruits from My Digital Knowledge Tree.
screen recording of my Obsidian graph