Summary
Marcin Kornek is a Senior React Native developer with 11 years of software experience, currently building mobile apps at Callstack from Poland. He specializes in end-to-end React Native delivery—leading projects from estimation and design collaboration to App Store release—with deep hands-on experience in Firebase, maps, payments (Apple Pay), analytics, and multilingual/RTL support. Marcin has acted as tech lead on consumer and food-delivery apps, implemented complex features like passwordless phone login, foreground/background geolocation, and CI/CD-backed releases, and regularly adds test coverage and Storybook components. Trained originally as a civil engineer, he brings a pragmatic, systems-oriented mindset to frontend problems and a continuous-learning attitude that keeps him exploring new JS and React Native patterns.
11 years of coding experience
9 years of employment as a software developer
Master's degree Civil Engineering, Master's degree Civil Engineering at Wrocław University of Science and Technology
Polish, English, German