Muhammad Umer Mehmood

Android Engineer & System Designer

Building native Android experiences — clean architecture, real-world scale.

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About Me

Android Engineer currently at Appsqueeze Technologies, with experience spanning professional engineering roles and AI hackathon contributions. I build production-grade native Android applications with a strong emphasis on architecture, maintainability, and performance.

• Native Android development in Kotlin, structured around MVVM + Clean Architecture
• Hands-on with Firebase (Auth, Firestore, Realtime DB, Storage) in live production apps
• Built and shipped full e-commerce client applications end-to-end on Android
• Competed in the IBM TechXchange Pre-Conference watsonx Hackathon (2024) and contributed AI/ML projects via lablab.ai
• Background in Python and databases enables a broader system-design perspective beyond just the mobile layer

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Tech Stack

Languages

Core Android & Architecture

Jetpack Components

UI

Backend & Networking

Async

Tools & Environment

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Featured Projects

Ecommerce-Client > A full-featured Android shopping client backed by Firebase — solving real-time product browsing, cart management, and secure checkout in a single native app. Key Features Real-time product catalog and inventory powered by Cloud Firestore Firebase Authentication — secure sign-up, login, and session management Cart and order lifecycle with persistent cloud-backed state Clean MVVM separation: ViewModels own state, Repository owns data decisions

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Architecture

Standard MVVM project structure used across all projects:

app/
├── data/
│   ├── model/           # Data classes & entities
│   ├── repository/      # Single source of truth
│   └── source/
│       ├── local/       # Room DAOs & local DB
│       └── remote/      # Retrofit services & Firebase
├── ui/
│   ├── activity/        # Entry points
│   ├── fragment/        # Screen-level UI
│   └── viewmodel/       # Lifecycle-aware state
├── utils/               # Extensions, constants, helpers
└── MyApplication.kt

UI never speaks to data sources directly. All state flows through ViewModel → Repository → Source.

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Development Principles

Principle	Practice
Clean Architecture	Domain logic fully decoupled from the Android framework
Single Source of Truth	All data decisions live in the Repository layer
Lifecycle Awareness	Coroutines scoped to viewModelScope; no memory leaks
Scalability	Features added without touching unrelated layers
Maintainability	Consistent conventions, minimal coupling, clear boundaries

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GitHub Stats

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Experience

Role	Company	Period
Android Developer	Appsqueeze Technologies	2025 – Present
Mid Level Android Developer	Top Edge Technologies	2025
Mid Level Android Developer	Appsqueeze Technologies	2023 – 2024
Python Developer / DBA	Fiesta Consultants LLC	Mar 2022 – Mar 2023

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Open to exciting Android engineering opportunities

Multan, Pakistan