Maxime Saint-Joannis

Let's build, in public.

Full-stack and web3 developer.

Not an expert, an experimenter. I build in the open and write it down as it happens.

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The story

How I got here

Music production and live performance

Sound first

I was a music producer: writing my own tracks in Ableton Live and performing them live, professionally, around the world. Making that music meant building the machinery behind it (processing chains, racks, presets), and the tools ended up fascinating me as much as the sound.

Ableton was my development environment before I knew what one was: building a set meant wiring inputs, transforms and outputs, then saving the good ones as presets. Engineering, just with sound.

Learning to build

From racks to code

That urge to build my own tools pushed me into development, through The Hacking Project, where I discovered the web and then web3. It felt familiar: small composable pieces wired into bigger systems, exactly how I already worked in sound.

The bootcamp gave the instinct a language, and web3 is where it clicked hardest: smart contracts compose like modules in a rack, except the patches move real value.

Into web3

Shipping on Intuition

Sofia started with a schoolmate and a $20k Intuition grant, and grew into a full ecosystem around personal data and trust circles enforced on-chain. From there came hackathons at ETHGlobal Cannes and Lisbon, paid missions for intuition.box, and one thread I keep pulling: delegation and reputation.

The grant turned a school project into responsibility: real users, an extension, an explorer, a mobile app, docs. The missions that followed (FeeProxy, Hourglass, Liquid Democracy) each went deeper into delegation.

Building in public

In the open

I document the work as it happens, and every claim on this site points at something you can check: a repo, a live demo, or an address on-chain. Sofia and TrackHunter are still live, Liquid Democracy and Loka are what I'm building right now.

This site is the log: journal notes written as things ship, hackathon debriefs that keep the misses in, and a now page that says what I'm actually doing this month.

The timeline

Milestones

Music production and live performance

The origin

I produced my own music in Ableton Live and performed it live, professionally, on stages around the world. What hooked me as much as the music was building the machinery behind it (processing chains, racks, presets), and that urge to build my own tools is what eventually pushed me toward code.

The Hacking Project

Learning to build

The switch into dev. A bootcamp where I discovered the web, then web3, and recognized the thing I already loved in music: small composable pieces wired into bigger systems.

2024

TrackHunter

Music side project

Built in the middle of everything else, for the DJ side of me: paste a playlist and hunt its tracks across Spotify, Bandcamp, Beatport and Discogs from a single input. Proof the music thread never stopped, it just changed shape.

2025

Sofia

Graduation project turned product

Started with a schoolmate as our graduation project, then a $20k Intuition grant pushed us to keep going. It grew into a full ecosystem around personal data and trust circles enforced on-chain: extension, explorer, mobile app, docs, landing. Still live, still the flagship.

2026

WisPear

First hackathon (ETHGlobal Cannes)

Our first hackathon. Describe the task you need done and WisPear assembles the agent for it (MCPs, model, prompt, metaprompt), guided by community feedback and votes. It left me with a question I couldn't drop: what is an agent, really?

2026

ARP: Agent Reputation Protocol

Reputation for AI agents

My answer to the WisPear question: an agent isn't just a model, it's a wrapper of components that should be enumerated, then weighted by the agents that use them. The POC shows one agent hiring another and rating the delivered work, while the hired agent rates the tools it used, growing an autonomous registry of agent and tool value.

2026

Intuition FeeProxy

Paid DAO mission (intuition.box)

In parallel I was assigned the official affiliate webapp for Intuition's FeeProxy singleton, a paid intuition.box mission on the protocol's audited contract, with support from the core team. Delivered: registration, fee schedules, on-chain stats and an agent integration guide.

2026

TheKitty

2nd place (Gnosis Circles hackathon)

A six-week detour into the Circles ecosystem on Gnosis: on-chain group pots that grew into a small services marketplace, with a recommender built on the Circles trust graph. It finished 2nd overall, my first hackathon placement.

2026

Hourglass

Value delegation

Deeper into value delegation with intuition.box: a non-custodial system where a beneficiary pulls their revenue directly at the source, from the account that pays them, via the MetaMask Delegation Framework (ERC-7710). We then took the idea to ETHGlobal Lisbon and built the automated version.

2026

Liquid Democracy

Current mission (intuition.box)

What I'm working on right now: a POC showing that governance responsibility itself can be delegated, scoped and enforced by ERC-7710 caveat enforcers. The same delegation thread as Hourglass, pointed at voting.

2026

Loka

Music, full circle

The sound work kept running alongside the code and brought in a new client: Loka, a board game built around meditation. I'm designing their companion app, the place where all the audio plays and the guidance happens.

Maxime Saint-Joannis
Maxime Saint-Joannis

I build, I learn, and I like meeting people who do the same. Let's talk.