Mobile social network for French student associations. 50 active associations, thousands of events organised, integrated ticketing. Launched in 2022.
Build a complete social product — feeds, paid events, real-time messaging and moderation — with viable unit economics for a student audience. The infrastructure budget had to remain between €3 and €4 per active user per year.
A shared Flutter codebase covered iOS and Android. The Express and Mongoose backend, using MongoDB, ran on AWS Elastic Beanstalk in eu-west-3, with multi-AZ auto-scaling and PM2 clustering to absorb Thursday-evening peaks. MongoDB handled feeds and messaging, S3 stored files and Firebase delivered notifications. Ticketing covered free and paid tickets, multiple price points, bundles, member and non-member rates and waitlists, with payments through Lydia.
Operated for 3 years and 4 months. The full codebase was transferred to the client.