Mohannad S.
Expert Android & Kotlin Multiplatform (KMP) Engineer | Mobile Engineer
Thanks for visiting my profile! 👋 I’m a Senior Mobile Engineer with 5+ years of experience building high-quality mobile applications using Android Native and Kotlin Multiplatform (KMP). I help startups and businesses build scalable, maintainable, and high-performance mobile apps for both Android and iOS using a shared Kotlin codebase. My focus is on clean architecture, modern development practices, and delivering reliable products that create real value for users. I believe that successful software comes from clear communication, honesty, clean code, and attention to detail — values I bring to every project. What I Can Help You With : Mobile Development - Android App Development (Native Android) - Kotlin Multiplatform (KMP) Development - Shared business logic for Android & iOS - Jetpack Compose UI Development - REST API & GraphQL Integration - Firebase Integration - Google Maps & Location Services - E-commerce & Delivery Applications - Performance Optimization & Bug Fixing - App Refactoring & Code Reviews - Publishing Apps to Google Play and App Store Languages & Frameworks - Kotlin - Java - Kotlin Multiplatform (KMP) - Jetpack Compose - Android SDK - XML Architecture & Engineering - MVVM, MVI, MVP, MVC - Clean Architecture - SOLID Principles - Design Patterns - Modularization - Dependency Injection (Hilt, Dagger, Koin) Async & Networking Kotlin Coroutines - Flow - RxJava - Retrofit - REST APIs - GraphQL APIs - Protocol Buffers Tools & Platforms - Android Studio, Xcode - Firebase, Supabase - GitHub, GitLab, Bitbucket - Jira, Trello, Asana, Slack - Figma, Adobe XD Testing - Unit Testing - Instrumented Testing I’m always focused on writing clean, maintainable, and scalable code while building long-term relationships with clients through quality work and reliability. Let’s build something great together 🚀
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $7.9k
Billed in all: $33,536$34k
$2k in the last 6 months
Across 9 contracts
Earnings, last 30 days
Skill rankings: Top 5% in Android Studio
Ranked by MRR among everyone on Upwork with the skill.
- Android Debug Bridge18 freelancers · 🇵🇸 #1Top 11%🇵🇸#1 of 1
- #5Android Tablet26 freelancers · 🇵🇸 #1Top 19%🇵🇸#1 of 1
- #12Android NDK94 freelancers · 🇵🇸 #1Top 13%🇵🇸#1 of 1
- #20System Analysis219 freelancers · 🇵🇸 #2Top 9%🇵🇸#2 of 8
- #27Data Structures418 freelancers · 🇵🇸 #1Top 6%🇵🇸#1 of 3
- #42Android Studio805 freelancers · 🇵🇸 #1Top 5%🇵🇸#1 of 8
- #57XML717 freelancers · 🇵🇸 #1Top 8%🇵🇸#1 of 4
- #62Android SDK805 freelancers · 🇵🇸 #1Top 8%🇵🇸#1 of 8