01 / MISTRAL AI · NATIVE PLATFORM
Le Chat
Three months on Le Chat mobile during hypergrowth: native file-preview module, share intent, iOS widgets and an Android tile.
49PRs merged in 3 months
~60 %of the work in native
Case studies
7 missions.
Seniors only.
Native, architecture, performance, SDKs: what we shipped, for whom, and what it changed.
02 / SEPHORA · MULTI-COUNTRY MONOREPO
Multiple apps.
One codebase.
One monorepo, three apps for Europe and the Middle East. Each country gets its typed settings on launch, LTR and RTL alike.
60app variants, one repo
0per-country forks
03 / NACON · IOT + BLE
Hardware.
Inside React Native.
The companion app for a PlayStation controller: an offline-first TypeScript core on Expo and a full BLE stack, iOS and Android.
BLE ↔ RNtype-safe protocol
iOS + Androidone Expo codebase
04 / EPSOR · UNIVERSAL APP
Web and mobile.
One codebase.
Six months backing two fintech teams: the mobile app brought into the monorepo, screens shared with the web, and a new app whose design changes per client.
4web and mobile apps, one monorepo
200 000+employees on the platform
05 / TWENTY · GRAPHQL BACKEND
One GraphQL schema.
Per customer.
22 months in the core of an open-source CRM: a GraphQL API generated on the fly for each workspace, with its cache, then Twenty ORM.
224PRs merged in 22 months
1 / tenantGraphQL schema per workspace
06 / CRISP · OFFICIAL SDK
The official SDK.
From scratch to npm.
A maintenance mission that became a new SDK: architecture, iOS and Android, notifications, docs and a migration guide, all the way to npm.
16 000+npm downloads a month
25+native methods exposed
07 / WEWARD · ANDROID PERF
Faster on Android.
And measured.
Backing the tech team of an app with 20M+ users: fixes for Android freezes and startup, and a benchmark bench on real phones.
20 M+users on the app
×10cold starts per run, on real phones