Jean-Nicolas Defossé

You have a mobile app to build, fix, or scale.

I make it happen on iOS and Android, natively.

Here’s what that means for you:

✅ One developer for both platforms

No need to hire two specialists. I cover iOS and Android natively, which cuts your costs, speeds up decisions, and keeps your codebase consistent.

✅ Clean code you won’t regret in 6 months

I build with Clean Architecture and MVVM from day one. Your app stays maintainable, testable, and easy to hand off, whether I stay or leave.

✅ Full ownership, zero hand-holding

From architecture choices to App Store submission, I manage the full cycle. You focus on your product, I handle the technical execution.

✅ I spot problems before your users do

After 12 years of mobile development, I’ve learned to notice the small friction points that kill retention. I build around them.

Whether you need to launch a new app, rescue a legacy codebase, or add a senior dev to your team

I’m available from mid-May 2026.

📍 Liège, Belgium | Remote & hybrid | 500–700 € / day