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Jan Jaworski
Jan Jaworski
Software Engineer

TypeScript and React Query fan. Pair programming enthusiast. Stripe Community Expert and occasional OSS contributor. Mentor in the field of Newcomers onboarding at Callstack. Helped reduce shared bundle size by 50% from 560kB to 280kB and boost performance of a large e-commerce. All year biker and tea connoisseur. Cosplaying as a sysadmin. Also owned 20 hamsters as a child.


I provide expertise in


  • .NET Core


  • JS (ES5, ES6, ES7)
  • React
  • Angular
  • RxJs
  • Redux
  • Gatsby


  • React Native


  • Typescript
  • Docker
  • Git

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