Vladimir HlobchastyiVladimir HlobchastyiSenior Software Engineer
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Case Study
Cross-platform mobile app

Health & Wellness Mobile App

Cross-platform wellness app for iOS and Android built with React Native and TypeScript.

Role

React Native Developer

Focus

New features, refactoring and ongoing improvements across tracking, scanning, subscriptions and notifications.

Stack

React NativeTypeScriptReact NavigationTanStack QueryReanimatedSkiaVision Camerai18nextMMKVreact-native-iapOneSignalSentry
Preview & Screenshots
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Health & Wellness Mobile App — image 1
Health & Wellness Mobile App — image 2
Health & Wellness Mobile App — image 3
Health & Wellness Mobile App — image 4

Overview

Contributed to a feature-dense React Native application live on the App Store and Google Play. Worked within a large existing codebase — developing new features, refactoring screens and shared logic, and helping evolve the app across multiple product domains.

Challenge

Contributing to a production app means changes have to fit existing patterns, stay smooth on real devices and not regress critical flows. Much of the work was careful refactoring alongside shipping new functionality.

Outcome

New features delivered and parts of the app refactored to be cleaner and more maintainable, while keeping the live application stable for users on both iOS and Android.

Responsibilities

03 areas
01

New features

Developed and shipped new screens and flows across tracking, scanning and content creation as part of the team.

02

Refactoring

Refactored existing screens and shared logic to reduce complexity and improve maintainability of the React Native codebase.

03

App-wide improvements

Worked on performance, UI consistency and bug fixes across the application, using Reanimated and Skia to keep interactions smooth.