Psyche & Eros
Canova’s marble at the Louvre, planned as a LEGO model at real size. A Python pipeline turns a public 3D scan into 146,975 pieces, with a 3D viewer and building instructions for all 495 layers.
Hello, I’m 
Guillaume.
“ghee · yohm”
Co-founder & CEO of The Phantom Company, maker of PhantomBuster and Tealde. I build tools that give sales and marketing teams unfair leverage.
Now
The Phantom Company is ~65 people. Together we built PhantomBuster into the engine behind sales and marketing teams in 100+ countries, running millions of actions a day. $10M ARR growing 20% YoY, bootstrapped and profitable.
Building Tealde, our AI-native product, launching for everyone in October. The question I think about all day: what does a sales team look like when the research does itself?
Living with an amazing woman and a four-year-old I can barely keep up with. Off hours: AI experiments, picking up tennis, lifting and running with friends.
Where it started
In 2017 I got on a plane to San Francisco.
PhantomBuster was barely a sketch. Over there, everyone was building and shipping without waiting for anyone’s permission. I had never seen that energy before. I flew home wanting to build like that, and I still do.
What I believe
Selling is human, and I want to keep it that way. The industry turned it into an assembly line. Marketing hands the lead to an SDR, the SDR to an AE, the AE to customer success, and somewhere in that relay the customer stops being a person. Nobody chose that because it was good. It was the only way to survive the volume.
AI changes the economics. When the research, the signals and the follow-up do themselves, one seller can own the whole relationship, end to end. We call it sovereign selling, and the full argument is on the company site.
Nobody wakes up wanting to spam two hundred strangers. Salespeople do it because nothing better exists: no signals, no targeting, no way to find the right person at the right moment. Nobody has solved this.
We’re building the something better.
What we’re building
PhantomBuster does the genuinely hard thing: it reaches the parts of the web that have no API, like the social graph and the sites nobody will ever build a connector for. That problem is solved, at scale, for a hundred thousand teams.
Tealde puts an agent on top of it. Not a chatbot in a sidebar: an agent that does the work a sales rep should never have to do by hand. Finding the right accounts, catching the moment someone is ready to talk, keeping the CRM honest. The research and the admin that eat most of a rep’s day.
A rep’s job is the conversation and the close. The rest is tax. We’re removing the tax.
How I work
- Building is easy now. The real fight is finding your market.
- Owners beat experts. I want people who own their topic, not rent their expertise.
- Bet on people for years, not quarters.
- Build, measure, iterate, fast. One shot is a lie. Brute-force success.
- Meetings are a tax. Human interaction isn’t.
On LinkedIn
Off-hours experiments
I run a company that builds AI agents, so I want to know firsthand what they can and can’t do. Off hours, I give AI coding agents projects with no business case and see how far they get. These are personal tests, not Phantom Company products: unfinished previews, rough edges included.
Crystal Wars
A tactics card game we designed as students at Epitech, now rebuilt as a 3D tabletop in the browser. Five factions on a 7×7 board: play the AI, a friend on the same screen, or someone online.
Trains
The real Bordeaux to Paris line, 538 km, rebuilt in 3D from OpenStreetMap data. A locomotive explainer, a driving mode for young kids and a railway switching puzzle, in French and English.
Reach me
The best way to reach me is email. I read everything that lands in my inbox, and I’ll reply when I can.
Don’t have the address? Point PhantomBuster at me and let it dig up the email. Finding the right person’s contact is, more or less, the entire product. Using it on the guy who built it feels only fair.