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Jakub Sys
Jakub Sys
Software Engineer
Jakub Sys
Jakub Sys

Young developer with years of experience building React Native apps for both Android and iOS platforms. Crazy about usage of the newest technologies, setting new best practices and improving each and every day. Interested about brownfield systems and performance optimisations. Privately, a high altitude mountaineering enthusiast, aiming to complete Seven summits challenge. As he says: "Born to win. Win big. To live hard and train hard".

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I provide expertise in


  • Node.js


  • JS (ES5, ES6, ES7)
  • React
  • Redux Saga


  • React Native


  • Typescript
  • Jest


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