Multilingual Android App in Kotlin

I need a seasoned Android developer to create a multilingual mobile app built primarily with Kotlin. Dynamic language switching is central to the project, so users must be able to move from one language to another instantly without restarting the app. While performance and scalability matter, the top-line priority is a polished, intuitive UI/UX that feels native in every supported language.

The codebase should reflect current Android best practices—proper architecture components, clear separation of concerns, and thoughtful use of coroutines or similar techniques for smooth performance. If Jetpack Compose fits naturally into a Kotlin workflow I’m happy to consider it, but the core requirement is clean, idiomatic Kotlin throughout.

To keep the product maintainable, please structure resources so new translations can be dropped in with minimal refactoring. The finished build should run efficiently on a wide device range, handle orientation changes gracefully, and meet Play Store guidelines from day one.

Deliverables
• Production-ready APK and full source code in a Git repository
• Brief setup guide and notes on how to add or update language resources
• UI/UX designs (wireframes or mock-ups) that reflect the final build
• One revision cycle after initial handoff to iron out translation or layout issues

Acceptance criteria
• Language can be switched from settings in-app with the new locale applied instantly
• All visible text surfaces through string resources—no hard-coded copy
• Startup time under two seconds on a mid-range device
• No critical or major issues flagged by Android Studio’s lint inspections

Please share links or APKs of past multilingual apps you’ve shipped, note any design awards or recognitions for UI work, and give me a realistic timeline from kickoff to store-ready release. I value clear, proactive communication and on-time delivery, and I’m ready to start as soon as I find the right fit.