Web3 architect · Serial founder · On-chain since 2017
I’m Jean. I build the engines markets run on.
Engineer and serial founder. Sixteen years of shipping software, twelve of starting companies — and since 2017, designing the exchanges, derivatives and payment systems behind crypto.
I’ve been writing production software since 2010 and building companies since 2014. In 2017 I moved into crypto full-time — less for the tokens than for the engineering: financial infrastructure where a single bug can cost millions and every minute of downtime costs trust.
Since then I’ve taken four products from a blank page to real scale — a centralized exchange, an on-chain perpetuals exchange, a crypto payment network running on thousands of point-of-sale terminals, and a quant trading system — as founder, co-founder, CEO or CTO. I sit where the business and the architecture meet: deciding what to build, then making sure it holds.
My bar is simple: if it moves money, it has to be boring — predictable under load, paranoid about keys, and run by a team that doesn’t need me in the room.
16
years shipping software
10+
years in Web3
12
years as a founder
$B+
handled by systems I designed
02 — Path
How I got here.
2010
First production code
Started building software end to end — backend, frontend, infrastructure — and never stopped.
2014
First company
Founded my first startup and learned that architecture decisions are business decisions.
2017
All-in on Web3
Moved into crypto full-time, starting at the hardest layer: trading, custody and settlement.
Since
Exchanges, perps, payments, quant
Built the four products below as founder, co-founder, CEO or CTO — each handling real money at real scale.
Now
The next hard problem
Open to partnering with founders and investors on ambitious financial infrastructure.
03 — Products
Things I’ve built.
◼Names and links stay private at partners’ request — happy to walk through any of these in detail over a call.
01Centralized exchange
A crypto exchange, from a blank page
A full-featured spot exchange serving over a million daily active users.
Illustration
My role
Founding team and technical lead — designed the whole system end to end and led engineering through launch.
What I built
An in-memory matching engine with millisecond latency, a data layer built for hundreds of millions of records, and hot/cold multisig custody that passed a financial-grade audit.
ms
matching latency
1M+
daily active users
0
assets lost
02On-chain perpetuals
A perpetuals exchange that lives on-chain
A decentralized exchange for perpetual futures, deployed across multiple chains.
Illustration
My role
Founding team — led the protocol architecture and the smart-contract engineering.
What I built
Hundreds of in-house smart contracts forming a complete perpetuals ecosystem, with order matching that runs fully on-chain.
$10M+
total value locked
200K
users
$100M+
daily volume
03Retail crypto payments
Paying with crypto at the checkout counter
A payment network that lets shops around the world accept dozens of tokens at the till.
Illustration
My role
Founding team — designed the payment and custody architecture and led the build.
What I built
A gateway with HSM-protected keys and settlement in seconds, connected to thousands of point-of-sale terminals worldwide.
1,000s
POS terminals
8-fig
daily payment volume
0
security incidents
04Quantitative trading
A quant system with a public scoreboard
Automated trading strategies on perpetual futures that others can follow through copy-trading.
Illustration
My role
Founder — built the system and the strategies myself.
What I built
A multi-asset perpetuals engine with copy-trading support, whose performance is public and verifiable.
#7
on the Binance leaderboard
Live
copy-trading
Smaller bets
AI video × ERC-404
An AI video-generation product whose creations live on-chain as ERC-404 assets.
GameFi
A game-meets-finance product built around an on-chain economy.
Token swap
A decentralized exchange for swapping tokens directly from your wallet.
x402 payments
An on-chain payment product built on x402, the HTTP-native payment protocol.
NFT synthetics
A product for composing NFTs into new, synthetic on-chain assets.
Token toolkit
Self-serve tooling for issuing and managing tokens.
04 — Toolbox
Full stack, in the literal sense.
From bytecode to the checkout counter — I’ve shipped every layer of a financial system.