One engineer.
A studio's range.
A decade building software that ships — and one person now directing what once took a team. Expertise leads; AI is the instrument, not the author.
Stéphane Roche has spent a decade building software that ships — from Ledger in 2015, where Bitcoin became the discipline, through Liquid and atomic swaps, Solidity, and Move smart contracts on Sui. He builds financial products he understands as the investor who trades them, not just the engineer who codes them.
The work spans dev, design, and product because one person now directs what once took a team: AI is the instrument, not the author. Seniority sets the standard; orchestration sets the pace.
production software
Ledger to Horizon.
Ledger
Bitcoin became the discipline — security and self-custody as first principles.
Atomic swaps
Non-custodial exchange on the Liquid sidechain — trustless settlement, no counterparty.
Solidity & Move
Smart contracts across ecosystems — DeFi and real-world assets, from protocol to interface.
Astral Horizon Labs
One engineer directing a fleet of AI — the leverage to ship like a studio.