$10M ARR · Bootstrapped · Profitable

Hello, I'm Guillaume.

Co-founder & CEO of PhantomBuster. I build tools that give small businesses unfair leverage.

/now
Updated 22 May 2026

Running PhantomBuster — ten years in, ~70 of us, $10M ARR growing 20% YoY, bootstrapped, profitable. Customers in 100+ countries.

Building PhantomBuster AI — putting an agent on top of ten years of automation. The hard part is done; the next part is what I think about all day.

Living with an amazing woman and a four-year-old who outpaces me. Strength training in the morning, long runs on weekends.

Where it started

Ten years ago I got on a plane to San Francisco.

PhantomBuster was barely a sketch. I'd never been somewhere that simply built — no permission asked, no waiting for the right moment, just people who believed software could move things and acted like it. I flew home with the fuse lit. A decade later it's still burning, and most of what I do traces back to that trip.

What I'm building

For ten years, PhantomBuster has done the genuinely hard thing: reach the parts of the web that have no API — the social graph, the sites nobody will ever build a connector for. That problem is solved, at scale, for a hundred thousand teams.

PhantomBuster AI 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 been doing by hand: finding the right accounts, catching the moment someone is ready to talk, keeping the CRM honest. The research and the admin that eats 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.

No SDR wakes up wanting to spam two hundred strangers. They do it because everything else is too slow. We're making everything else fast.

How I work

  1. Small teams beat big teams.
  2. The bottleneck moved from building to judgment.
  3. Hire for taste, not pedigree.
  4. Bet on people for years, not quarters.
  5. Build, measure, iterate — fast. One shot is a lie.
  6. Stay close to the product.
  7. Meetings are a tax — but human interaction isn't.

Anti-CV

Slack — can't read everything. Book me, fifteen minutes, one topic.
Sleep — I don't sleep enough. "One more thing" keeps winning.
Writing — bad at it. Always have been. Fighting it in 2026.

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.