Kotlin Coroutines & Flow Refactor — Async Code Modernisation

I will refactor a targeted section of your Kotlin codebase — migrating from callback-based async code, RxJava, or incorrectly structured coroutines to clean, idiomatic Kotlin coroutines and Flow — covering scope management, dispatcher selection, error handling with structured concurrency, Flow operators for data transformation, StateFlow for UI state, and SharedFlow for events. Incorrectly structured coroutines are one of the leading causes of Android memory leaks and background task lifecycle issues; a professional refactor eliminates the entire class of these problems.

The refactoring scope covers up to 800 lines, with before/after comparison, unit tests covering the refactored async behaviour using Turbine for Flow testing, and a brief architecture note explaining the concurrency design applied.

This service suits Android and Kotlin backend teams modernising legacy async code or cleaning up coroutine misuse that is causing reliability or performance problems.