I turn product thinking into Android experiences that feel polished, reliable and growth-ready.
I’m Mubashshir Khan, an Android engineer focused on Kotlin, Flutter, and high-performance mobile products. I build apps that are not only fast and stable, but also engineered to help people form better habits and make meaningful progress.
My core strength is translating complex product goals into clean architecture, resilient offline behavior, and clear user journeys. The best mobile products are the ones that reduce friction, reward consistency, and earn trust with every interaction.
On this site you’ll find a curated portfolio of mobile apps, case studies, and a performance-first approach to engineering, UX, and growth measurement.
What I bring to product teams
Professional journey and work history
Working on a production Android application, improving architecture, performance, and codebase quality using Kotlin, Java, and MVVM patterns.
Developed production-ready Android features using Kotlin and Jetpack Compose, focusing on clean UI architecture and smooth user interactions.
Production-grade Android and Flutter applications
Offline-first personal finance companion focused on budgets, behavior, and real-time money insights.
Modern multi-module Android travel booking app with separate user and property-owner applications, powered by Supabase for real-time data.
High-performance Android music player with background playback, dynamic queue management, and network-first streaming architecture.
Smaller experiments and explorations
Technologies I use to build great mobile apps
GitHub Language Stats
@HiltViewModel class MusicViewModel @Inject constructor( private val getTracksUseCase: GetTracksUseCase ) : ViewModel() { val tracks = getTracksUseCase() .stateIn(viewModelScope, SharingStarted.WhileSubscribed(), emptyList()) }
Open source contributions and project statistics
Top Languages
Recent Repositories
Technical writing on Android development and clean code
Kotlin provides several powerful ways to model fixed sets of types or states in your applications. Among the most commonly used are enum classes , sealed classes , and sealed interfaces . Each serves a different purpose, depending on the level of flexibility a...
When most beginners start Android development, they usually write UI code, UI logic, and business logic inside the same Activity or Fragment. It feels simple at first, but as the project grows, the code quickly becomes: Hard to read Hard to maintain Hard to de...
If you’re trying to get started with Kotlin Multiplatform (KMP) on Windows , you might face this message when installing the Kotlin Multiplatform plugin : “The plugin is not available for Windows” This plugin is officially supported on macOS , which is why the...
Open to new opportunities and interesting collaborations
I'm currently open to Android Engineer roles and interesting freelance projects. Whether you have a question, a project idea, or just want to say hi — I'll do my best to get back to you quickly.