Denis Slávik
Senior React & React Native Engineer
Prague, Czechia
Summary
🤩
Rockstar🎓
Top SchoolDenis Slávik is a Senior React and React Native engineer with a decade of experience building mobile and web applications, currently focused on TypeScript at Callstack in Prague. He has led frontend teams and shipped production React Native banking apps across multiple markets, pairing GraphQL and modern styling/testing tools to deliver polished user experiences. Denis has taught frontend technologies at Masaryk University, bringing a practical, pedagogical perspective to mentoring and code quality. His background spans early freelance web design to tech lead roles, giving him end-to-end product empathy from UX to implementation. Colleagues know him as a hands-on engineer who combines deep React Native expertise with a knack for simplifying complex frontend architectures.
10 years of coding experience
13 years of employment as a software developer
Networking and IT, Networking and IT at Spojená škola Nové ZámkyBachelor’s Degree, Informační technologie, Bachelor’s Degree, Informační technologie at Vysoké učení technické v BrněBachelor’s Degree, Computer Science, 2, Bachelor’s Degree, Computer Science, 2 at Eötvös Loránd University
Slovenian, English, maďarština
Github Skills (200)
google-maps10
react-native-video10
user-interface10
material-design10
frontend10
stompjs10
declarative10
react-native-ios10
react-native-component10
splashscreen10
mobile10
react-navigation10
loader10
mobile-development10
border10
Programming languages (7)
Github contributions (5)
slavikdenis/vape-timer
Nov 2020 - Mar 2025
Timer for your vaping session 🍀
Contributions:5 reviews, 133 PRs, 219 pushes in 4 years 4 months
timerreact
callstack-internal/onboarding-slavik
Feb 2022 - Mar 2023
Onboarding - Weather App via React Native
Contributions:2 reviews, 29 PRs, 123 pushes in 1 year 1 month
react-nativereactweather-apponboarding
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