React Native Developer · Expo Developer · Node.js Developer · NestJS Backend Engineer
Building and shipping production software for iOS, Android and web through PSYDEV. I specialize in React Native, Expo, TypeScript and backend APIs with Node.js/NestJS.
LinkedIn · GitHub · Medium · PSYDEV · Email
Senior mobile and backend engineer with experience delivering production applications for iOS and Android. I work across the full product lifecycle: discovery, architecture, implementation, API integration, performance, stability, observability, CI/CD and store release.
My core focus is React Native and Expo (Bare and Managed) with TypeScript. I also build REST APIs and backend services with Node.js and NestJS, including JWT authentication, MongoDB, Redis, Docker and integrations with mobile products.
I have worked on fintech, banking, loyalty, e-commerce, media and delivery products. I am the founder of PSYDEV, a software house focused on full-stack product engineering, and I write about React Native, Expo and native iOS integrations.
- Open to Senior/Staff Mobile Engineer, React Native Engineer, Full-Stack Engineer and Backend Engineer (Node.js/NestJS) opportunities
- Available for remote employment and PJ/contract work
- Comfortable working with private repositories and NDA-protected production code
React Native · Expo · Expo Bare Workflow · TypeScript · React · React Navigation · Redux Toolkit · Firebase · Supabase · Push Notifications · iOS · Android
Node.js · NestJS · REST APIs · JWT · MongoDB · Redis · PostgreSQL · Docker · API integrations
Swift · ActivityKit · WidgetKit · APNs · EAS Build · EAS Update · GitHub Actions · CI/CD · Sentry · Firebase Crashlytics · Playwright · Vitest · Cloudflare · Ubuntu Server
Production applications are listed below; client repositories are private under company ownership or NDA.
| Project | Contribution / stack |
|---|---|
| Vibe Benefícios | React Native loyalty and cashback app with 250+ partner brands. |
| Unigloves | Mobile and product platform for PPE manufacturing. |
| Imigrantes Bebidas | React Native mobile e-commerce and delivery experience. |
| Gooroo Crédito | React Native fintech app that brought the full loan journey to mobile. |
| Clube do Ingresso | React Native event ticketing application. |
| Revista Oeste | React Native reading and subscription application. |
| Portador IB | React Native/Expo app with Supabase backend and Sentry/Crashlytics observability. |
| Manei API | NestJS + MongoDB + Redis API with Docker, JWT and client-segmented authentication. |
- live-activity-apns-tutorial — open-source Expo/React Native reference implementation for iOS Live Activities using ActivityKit, WidgetKit and APNs push-to-start/update/end flows.
- vikinger-panel — self-hosted Docker panel for Valheim servers with FastAPI, Alpine.js, Tailwind, GitHub Actions and Playwright.
- inova-feature-flag — React and React Native feature-flag library.
- react-native-widget-extension — React Native integration reference for widgets and Live Activities.
- Production React Native/Expo applications, New Architecture, native iOS bridges and performance
- Backend APIs with Node.js/NestJS and mobile-oriented integrations
- Self-hosted infrastructure, CI/CD and observability
- Open-source examples that are useful for engineers building mobile products
Feel free to reach out through LinkedIn or email for new projects, consulting and contract work.