Senior React Native Engineer · Mobile Platform & On-Device AI · Brazil
I work on the layer other teams build on: the React Native core, the design system and the native API surface. Less shipping screens, more owning what everything else runs on.
- Platform, not features. I own a React Native core and the internal libraries feature teams build on: the design system, the integrations layer, the native APIs. That includes leading version and New Architecture migrations across a multi-repo ecosystem, and running the CI and release train behind them.
- AI in two directions. In product: an AI assistant, and podcasts and practice tests generated from whatever files a student uploads. In tooling: the agentic skills a mobile fleet uses to automate React Native upgrades, audit performance, and drive tests on real devices.
- Where JavaScript meets native. Startup instrumentation with TTID on the first frame and launch types classified off a monotonic clock, native modules and SDK integration, and the performance work that only shows up once you measure it properly.
- Ship end-to-end. My own apps go from blank repo to both stores: auth, monetization, analytics, crashlytics, store compliance, and everything that comes after launch.
React Native TypeScript Expo Expo Router New Architecture Reanimated FlashList
Cloudflare Workers Durable Objects WebSockets Firebase Algolia TanStack Query Zustand
Redux Toolkit Turborepo EAS Build Jest Maestro Datadog Flashlight
Three apps shipped solo on both stores, different complexities, same end-to-end execution.
Social whisky catalog. Browse brands, countries and kinds, review and rate whiskies, follow other drinkers, full-text search across the catalog.
Stack: Expo, Redux Toolkit, Firebase (Auth/Firestore/Storage/Analytics/Crashlytics), Algolia + InstantSearch, Legend List, FastImage, i18n (PT/EN), New Architecture enabled, Apple & Google Sign-In.
Personal stock-market app for the Brazilian (B3) and US markets. Portfolio tracking, indicators, charts, premium tier, biometric login, push alerts. Now on its thirteenth major version.
Stack: Expo Router, TanStack Query (offline-persisted), Zustand, Firebase (Auth/Firestore/Analytics/Crashlytics/Performance), Reanimated 4, FlashList, Google Mobile Ads, biometric auth, in-app review.
Party game inspired by Wavelength. Guess where on a hidden spectrum a clue lands, around a table or online. One pure reducer runs on both the app and the server, so the rules exist in exactly one place and the server is the only thing that ever sees the hidden target.
Stack: Turborepo monorepo with a shared game core, Expo SDK 54, Expo Router, Reanimated 4 + worklets, i18next (PT/EN/ES), PartyServer on Cloudflare Workers with one Durable Object per room, EAS Build with auto-submit.