Kasa Stefczyka
Built at Aplitt for Kasa Stefczyka, a large Polish credit union
I built the Flutter MVP of the Kasa Stefczyka mobile banking app and shipped it to production. The app is on Google Play as Kasa Stefczyka Online, with 100K+ downloads.
What I Built
Flutter MVP of a production banking app for a large Polish credit union
Flutter MVP
Built the MVP of the Kasa Stefczyka mobile banking app in Flutter and Dart at Aplitt.
Secure Authentication
Implemented the secure sign-in flow of the banking app.
Data Encryption
Implemented encryption of sensitive banking data in the app.
BLoC Architecture
Used the BLoC pattern to keep business logic separate from the UI.
One Cross-platform Codebase
Wrote the authentication and encryption features once, in one cross-platform Flutter codebase.
Shipped to Production
The MVP went to production. The app is on Google Play as Kasa Stefczyka Online, with 100K+ downloads.
Technology Stack
Flutter, Dart and BLoC, with a focus on security
App Screenshots
Screens of the Kasa Stefczyka Online app on Google Play
Payment Panel
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Main Dashboard
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Account History
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New Transfer
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Tax Transfer
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Transfer Limits
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Message Center
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Additional Options
Kasa Stefczyka Online on Google Play
Client work: I built the Flutter MVP at Aplitt (Sep 2020 – Apr 2021). The app went to production.
100K+ downloads