An Independent Product Studio
Subnet Protocol S.A. is a product studio based in Madrid, Spain. We design, build, and operate our own consumer platforms end-to-end — from backend infrastructure to the apps in people's hands.
What We Operate
Mignonne
Flagship product · operated since 2014
Mignonne is a dating platform for French-speaking markets — France, Belgium, Switzerland, Canada, and beyond. Operated continuously since 2014, it hosts hundreds of thousands of member profiles and is available on the web, iOS, and Android.
How We Build
High-Performance Backend
PHP 8 API with Swoole-based real-time WebSocket messaging
Modern Web
Next.js and React web experience
Native Mobile
React Native / Expo apps (2026) that replaced a legacy Cordova hybrid after 10 years in production
Trust & Safety
AI-assisted fraud, spam, and content moderation with human review
Our Principles
Own Everything End-to-End
We design, build, and run our own products. No client work, no outsourcing — full ownership of the stack, from infrastructure to interface.
Operate for the Long Term
Our flagship platform has been running since 2014. We build products meant to be maintained and improved over decades, not shipped and forgotten.
Privacy by Design
We operate from the EU under GDPR. Handling people's personal data responsibly is a core requirement of everything we ship.