About
One team, three specialists.
We met at marketing school, then set up WillGrowth together. William and Guillaume develop, from websites to business software. Lumbe designs brands and runs marketing. Growth marketing is something all three of us do. We work from Lille and Belgium, for clients in France and Belgium.
Reply within 24 hours on working days
Our starting point
We saw how it went elsewhere.
Timelines that keep slipping.
Strategies delivered as PDFs that end up in a drawer.
Sign-off meetings that multiply while nothing really moves.
Clients waiting for news without knowing where their project stands.
We set up WillGrowth to work differently: fast (an idea on Monday, live on Wednesday), and talking to our clients directly rather than through an account manager.
Our approach
What we do differently.
Quick decisions
There are three of us, and decisions are made between us. They turn into work without waiting for internal sign-off.
Each in their own field
You talk to the person doing the work: William and Guillaume for the code, from websites to business software, Lumbe for the brand, the marketing and project management. You do not explain your project three times.
The method is on the table
We share our tools, our reasoning and our doubts. If the direction we took leads nowhere, you hear it from us first.
AI
Where it saves time.
We use it every day, for the tasks that recur from one project to the next.
For you
What it changes.
Less time on what repeats
Research, drafting, analysis, monitoring: these are the tasks where AI saves time. That time goes back into what cannot be automated: understanding your situation and deciding with you.
Real availability
Fewer mechanical tasks means more time to answer your questions.
On our own projects first
We try it on our own projects before we bring it to yours.
The team
Who does what
William Penet
Technical co-founder. Websites, Shopify stores for nearly ten years, apps, business software and SaaS, then the SEO that brings in visitors.
Guillaume
Technical co-founder. Websites, business software, ERP and SaaS. He also comes from 3D modelling and video games, and takes on the projects that need an interactive experience.
Lumbe
Project lead, branding and marketing. Logo, visual identity, the screens of your websites and apps, Meta Ads campaigns on Facebook and Instagram. He is based in Belgium.
The method
How we work
Understand
Before acting, we take the time to understand your situation: your market, your constraints, what has already been tried.
Build
We move fast and keep you informed at every stage. You do not discover the result at delivery: you build it with us, one iteration at a time.
Iterate
Nothing is set in stone. We measure what works, adjust the rest, and tell you what we see, including when it does not work.
What people ask
Two common questions
How many of you are there?
Three co-founders: William, Guillaume and Lumbe. You know from the start who works on your project, and you talk to them directly.
What changes with three co-founders rather than a large agency?
A traditional agency carries a structure: account managers, internal sign-offs, fixed costs. You pay for it in delays and on the invoice. With us, the co-founders decide between themselves, often the same day, and your budget goes into the work.
Next step
Your quote starts with 30 minutes.
A video call in English, with William or Lumbe. If we can help, you get a written proposal: scope, fixed price, timeline. If not, we tell you.
- Length
- 30 minutes
- Cost
- Free
- Format
- Video call