python packages:

• django-graphql-auth - Django registration and authentication with GraphQL.

npm packages:

• react-tiger-transition - Full page transitions with react-router.
• use-cancelable-thunk-reducer - Custom implementation of react hook useReducer.

apps on Play Store

• react-native art museums app - Browse through Harvard's Art Museum collection.

technologies

• Typescript
• React
• React Native
• Relay
• SQL
• Expo
• Firebase
• Hasura
• Python
• R
• Travis
• CircleCI
• Jest
• Enzyme
• Heroku
• pypi and npm package publishing

among other stuff.