Jakub Kłobus
Jakub Kłobus
Technical Development Lead

Software developer working at Callstack since the beginning. After mastering web, he moved to React Native. Fanboy of ReasonML and functional programming.


I provide expertise in


  • Node.js
  • Hapi.js
  • Express
  • Sequelize
  • GraphQL
  • .NET
  • MySQL
  • PostgreSQL
  • MongoDB
  • Elixir


  • JS (ES5, ES6, ES7)
  • React
  • MobX
  • Redux
  • Apollo
  • Relay
  • Bucklescript/ReScript
  • React Native Web


  • React Native
  • ObjectiveC
  • Android (Java, Kotlin)
  • Reason React Native


  • Babel
  • Webpack
  • ReasonML
  • Typescript
  • Jest

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