Julien Lepleux

I’m Head of Growth and part of the founding team at ImmuneCo (dba MoldCo), where we’re building the future of recovery from mold and biotoxin illness. I’m also patient one.
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Previously, I was Principal at Bleu Capital, a global family office backing early-stage companies and funds. I led investments across hard tech sectors—energy, manufacturing, healthcare, supply chain—developing a thesis around sustainable progress and the infrastructures of tomorrow.
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Before that, I grew driver supply at a hard tech startup named Ara Labs (fka Cargo, backed by Founders Fund and Coatue) alongside a “little donkey” (engineers do like weird nicknames), and a few UMich grads.

I grew up in France, and I was born in Singapore. I came to the US to study business at Wharton. Today, I am a naturalized American citizen living in Miami.

A quote I resonate with: "Relentless progress, one step at a time".

Find me on the internet: Linkedin, X, Substack
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Some press: Wall Street Journal, Les Echos (🇫🇷)

Chat with me: julien@moldco.com (And ask me about the fast-casual restaurant I launched in college)