Guillaume Rosse
I help businesses turn their visitors into customers by handling the whole chain: the website, the tracking and the Ads campaigns. From Mauritius, for clients in Mauritius, Europe and worldwide.
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Your results get lost between the website, the tracking and the campaigns. My job is to connect them.
You may have been there already: one agency for the website, another for the ads, someone else for the tracking. Each one does its part well, and yet nobody really knows where your customers come from.
I saw it from the inside for years, in roles where I only held part of the chain: the tracking without the campaigns, the campaigns without the website. It's precisely between those pieces that results get lost.
So I created GR AdLab to hold the whole chain myself. You have one point of contact who knows your website, your numbers and your campaigns — and who can tell you what works, and why.
- Google Ads and Google Analytics certified
- Computer science degree
- French and English
Over ten years in the field, and what that changes for you.
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Education
Reading code means depending on no one.
My computer science background lets me set up tracking or fix a website myself, without waiting for a developer.
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2015 – 2022
A wrong number costs more than a missing one.
Seven years running acquisition and tracking for a European market research group, across several countries. It taught me to check the measurement before touching the budget: it's the first thing I do on your account.
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Since 2022
A good ad can't make up for a page that doesn't convert.
Google Ads and Meta Ads campaigns, tracking and websites for clients in Mauritius, Europe and worldwide. Often, the problem wasn't the ad but what happened after the click: that's why I look at your website too.
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Since 2022
A website everyone can use means more customers who make it to the end.
Accessibility audits for enterprise clients, and in 2025 the Banking and Media audits for the Contentsquare Foundation's report. Every website I deliver benefits from it.
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Today
All of it, with one point of contact.
The website, the tracking, the campaigns and accessibility, designed together and followed by the same person.
What you can expect.
- You talk to the person doing the work
No salesperson or project manager in between: I do the work, and I explain what I'm doing.
- Your accounts stay yours
Google Ads, Meta, Analytics: everything is created in your name. If we stop, you keep it all.
- Numbers you can check
A monthly check-in, on a report you can open yourself.
- Accessible, without having to ask
Every website is built to WCAG 2.2, by default.
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23
projects delivered
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90%+
typical PageSpeed score
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20+
enterprise clients supported on accessibility
What I can do for you.
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01
Website
Brochure site, e-commerce or service website: I build it fast, accessible and visible on Google from launch day, with SEO, GEO and Google Business Profile included.
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02
Ads
Google, Meta and TikTok Ads, run on server-side tracking that reports your real conversions — plus lead automation for your lead generation campaigns.
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03
Accessibility
Flash, full or cross accessibility audit against WCAG 2.2, RGAA, RAAM and RAWeb, the standards behind European Accessibility Act (EAA) compliance — a method I apply to enterprise websites (Michelin.fr, Volkswagen, Generali...) before bringing it to the scale of yours.
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04
Full-Funnel Growth
Accessible website, tracking and Ads, handled by the same person from the first brief to the last report. Few providers genuinely offer all three together.