AJ2
A navy copperplate landscape with nuclear infrastructure, a Firestorm aircraft, a glasshouse, and a rocket on its launch pad beneath a sun and satellite.

Brotherly angel checks for an abundant future.

Energy

Exodys Energy

Used nuclear fuel still has energy to give. Exodys is building a way to recover it.

Explore Exodys ↗
An engraved nuclear fuel assembly beside a recycling facility.
Defense

Firestorm

Firestorm makes drones and portable factories so they can be built where they’re needed.

Explore Firestorm ↗
An engraving of Firestorm’s Tempest aircraft beside a portable container workshop.
Health

The ImmuneCo

The ImmuneCo is building environmental health care, starting with MoldCo. Its vision spans toxins and microplastics.

Explore MoldCo ↗
An engraving of an environmental-health research bench, with a microscope, lungs model, sample vials, and magnified microscopic particles.
Space

Catalyx Space

Catalyx is building vehicles that bring heavy cargo back from orbit, at a lower cost.

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An engraving of the Catalyx ReX return vehicle with its broad deployed heat shield.

The brothers

Engraved likenesses of Adrien Lepleux, left in cap and sunglasses with a telescope, and Julien Lepleux, right, sketching a technical plan at a drafting bench.

Adrien
Lepleux

Chief of Staff at Firestorm. Previously invested in startups for Hermès.

Julien
Lepleux

Co-founded MoldCo, after investing at Bleu Capital and working in startup growth.

A small engraved library vignette, with bookshelves and an open book on a reading desk.

Writing

By Julien Lepleux

All essays on Substack ↗
About AJ2