Complete existing Android (Kotlin) app to match React Native app

Overview
We have an existing multi-module Android Kotlin project that is partially implemented. We also have a working React Native app that represents the “source of truth” for features and user flows. We need an experienced Android developer to finish the Android app to match the React Native version (UI/UX + functionality + API integration), and deliver a production-ready build.

What you’ll do
• Review the existing Android codebase and the React Native app to understand required flows and screens.
• Implement missing Android screens, business logic, and networking to reach full feature parity with React Native.
• Integrate with existing backend APIs (authentication, catalog, cart, orders/checkout, profile, etc. as per RN app).
• Ensure consistent UX behavior with RN: validations, error states, loading states, empty states, navigation, and edge cases.
• Fix bugs, crashes, and performance issues found during implementation.
• Add/complete unit tests where appropriate and basic UI tests for critical flows (as agreed).
• Prepare release builds and ensure the app is stable on common Android devices/versions.
Scope / expected parity areas (examples)
(These must match the React Native app behavior.)
• Auth: login/register, logout, token/session handling, refresh, forgot password (if present)
• Startup flow: splash/startup checks, session restore, routing
• Home/Catalog: categories, product list, product details, search/filter/sort (if present)
• Cart: add/remove/update qty, totals, promo codes (if present)
• Checkout/Orders: address, payment method flow (if applicable), place order, order history/status
• Profile: user info, addresses, settings
• Networking: consistent API models, error mapping, retries/timeouts as needed
• State/UI: consistent loaders, toasts/snackbars, offline/empty handling

Tech requirements
• Strong experience with Android Kotlin (production apps)
• Modern Android stack: Coroutines/Flow, Retrofit/OkHttp, Jetpack (Navigation, ViewModel), Room (if used), Material UI
• Familiar with DI (Hilt/Dagger/Koin) and clean architecture patterns
• Ability to read React Native code to mirror flows/logic (no need to write RN)
• Solid debugging, code quality, and testing mindset

Deliverables
• Completed Android app achieving feature parity with the React Native app
• Clean, maintainable code (consistent style, no hardcoded secrets, proper error handling)
• Working builds:
• Debug APK
• Release AAB/APK (as required)
• Short setup/build documentation (README update): environment, build steps, signing (if applicable)
• A checklist of implemented features + any known limitations

Acceptance criteria (how we’ll verify)
• All major user journeys match the React Native app (screen-by-screen and behavior).
• No crashes in standard flows; critical bugs resolved.
• API calls match backend expectations; auth/session works reliably.
• App builds successfully on a clean machine using documented steps.

Engagement details
• Start: ASAP
• Timeline: propose an estimate after initial review (typically 2–6 weeks depending on gaps)
• Communication: daily/regular updates with progress + blockers
• Work style: milestone-based delivery (recommended)

To apply, please include
• 2–3 relevant Android apps/projects you’ve shipped
• Your suggested architecture/approach for achieving RN parity efficiently
• Estimated timeline and cost (milestones)
• Any risks you foresee after a quick repo review

What we will provide
• Android Kotlin repository + React Native repository
• API base URLs / environments + test accounts
• Any UI references (screenshots/videos) if needed