Boris Kastner
Flutter Developer at AdGuard
Bratislava, Region of Bratislava, Slovakia
Summary
👤
Senior🎓
Top SchoolBoris Kastner is a Flutter developer with 8 years in software engineering and 5+ years focused on building B2C mobile apps, currently contributing at AdGuard from Bratislava. He has delivered 10+ cross-platform projects integrating native capabilities like real-time chat, geolocation, and on-device ML with TensorFlow Lite. Skilled in BLoC, native iOS/Android integration, Firebase and AWS, he also designs backend services in Python (Flask, FastAPI) to improve front-end functionality. Boris automates CI/CD with GitHub Actions, cutting build times by around 40%, and emphasizes test coverage through unit, widget, and integration tests. He’s experienced in architecting scalable solutions for mobile and web convergence and streamlining team workflows. A detail-oriented engineer, he pairs modular UI craftsmanship with practical backend optimizations to deliver responsive, maintainable apps.
8 years of coding experience
5 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Peoples’ Friendship University of Russia
English, Russian, Portuguese
Github Skills (23)
sizzle9
bloc9
scales8
flutter8
firebase8
google7
dart7
flutter-plugin6
flutter-apps5
stripe5
ios4
storekit4
android4
react4
in-app-purchase3
Programming languages (4)
Github contributions (5)
BorisKest/park_app
Jun 2022 - Dec 2022
Park guide application
Contributions:109 commits, 36 PRs, 64 pushes in 5 months
parkreacttypescript
BorisKest/boriskest.github.io
Dec 2019 - May 2021
Contributions:42 pushes, 1 branch in 1 year 5 months
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