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Palfalvi Lorand

@palfalvilorand

React Native engineer who built and launched Quell on iOS and Android, from its mobile app to its backend and store releases.

Romania

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What I'm looking for

I'm open to local and remote opportunities.

I built and launched Quell, a read-later app for iOS and Android, owning its mobile development, backend implementation, testing, and store releases. I developed the app with React Native and Expo, integrating its GraphQL API, secure token storage, and local notifications.

For Quell, I also built the Node.js and GraphQL backend with Express, Prisma, PostgreSQL, and Redis. I implemented client and backend tests with 70% coverage and profiled startup and scrolling performance on-device.

At ITMAGINATION, I developed and maintained React Native and TypeScript IoT applications that connected to Bluetooth devices and handled device data and settings. I worked with cloud and backend teams on API contracts and integrated Firebase and Sentry monitoring to investigate production issues.

At Yopeso, I worked on React Native and TypeScript applications across e-commerce and IoT projects, profiling performance and strengthening authentication flows. Earlier, at The Arktech, I built and maintained mobile apps and integrated REST APIs and Google Maps.

Experience

Work history, roles, and key accomplishments

Current

React Native Engineer

Current

Quell - Independent Product Developer

Apr 2026 - Present (6 months)

Built and launched Quell, a read-later app for iOS and Android, owning mobile development, backend implementation, testing, and store releases. Developed the React Native mobile app with Expo, Apollo Client, and Zustand, integrating the GraphQL API, secure token storage, and local notifications.

React Native Expo Apollo Client Zustand GraphQL NodeJS Express Prisma PostgreSQL Redis JWT Jest Maestro GitHub Actions Performance Profiling

React Native Developer

ITMAGINATION

Aug 2022 - Feb 2025 (2 years 6 months)

Developed and maintained React Native and TypeScript IoT applications that connected to multiple Bluetooth devices, retrieved device data, and updated device settings. Collaborated with cloud and backend teams to define API contracts and integrate device data into mobile applications using Redux Saga and Redux Thunk.

React Native TypeScript Redux Saga Thunk GitHub Actions Tolgee Firebase Analytics Sentry Bluetooth IoT

React Native Developer

Yopeso

Jan 2018 - Jan 2022 (4 years)

Developed and maintained React Native and TypeScript applications across e-commerce and IoT projects, using Redux Saga and MobX for state management. Used React Native profiling tools to identify memory and rendering bottlenecks and improve application responsiveness.

React Native TypeScript Redux Saga MobX SQLite Jest Sentry Firebase Algolia Docker Performance Profiling

Mobile App Developer

The Arktech

Jan 2017 - Jan 2018 (1 year)

Integrated REST APIs and Google Maps, and gained experience with iOS deployment. Built and maintained Android, React Native, and Flutter applications from specification through store release.