
Frédéric Renken
Co‑founder, Lassie — product leader; ex‑Superhuman.
frederic
San Francisco, California
Joined September 2025
Network
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Summary
Founder focused on fintech for health practices: Frédéric co‑founded Lassie (since 2020), positioning the company as a financial OS for small medical practices — combining product, operations, and early‑stage hiring to build back‑office financial tooling for clinicians. nitter+1
Product leader with early, hands‑on startup product experience: Renken is cited as an early/first product hire at Superhuman (2018–2020) and has public writing and tweets that reflect product thinking and feature launches — indicating strengths in shipping product features, product‑led hiring, and early stage product work. businessinsider+1
Technical background and early engineering experience: Prior engineering role at Uber (2017) before transitioning into product and founding work, giving him a mix of engineering and product credibility on early teams. linkedin+1
Public thinker and writer on product and startups: Maintains a Substack and posts on Twitter/X about product, productivity, and startup topics — signals a habit of public writing and community engagement around product practice. substack+1
UBC‑educated mathematician: Graduated from The University of British Columbia (listed in the Spring 2020 graduation materials), providing a formal quantitative background that likely informs his approach to product and problem solving. ubc
Work
Education
Projects
Hobbies
Writes publicly about product, productivity, and startups; active on Twitter/X. substack+1
Notes
JBJohan Bakkensaid
FRFrédéric Renken
is one of the most impressive founders they know running a small business.May 15, 2026
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