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Mohannad S.
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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 🚀

🇵🇸Gaza, Palestinian Territories$25/hr100% JSS5.00 (5)Since Mar 2018

Earnings and projects

MRR
$1.3k

Last 6 months ÷ 6

World#37,305 / 412k
🇵🇸Country#40 / 676
Revenue, last 30 days
$1.3k

Last 6 months: $7.9k

World#34,104 / 412k
🇵🇸Country#37 / 676
Total earnings
$32k

Billed in all: $34k

World#105,982 / 412k
🇵🇸Country#114 / 676
Per project
$4k

$2k in the last 6 months

World#43,139 / 412k
🇵🇸Country#54 / 676
Projects, last 6 months
4
0% fixed100% hourly
World#51,813 / 412k
🇵🇸Country#48 / 676
Projects in all
8

Across 9 contracts

44% fixed56% hourly
World#223,560 / 412k
🇵🇸Country#425 / 676

Earnings, last 30 days

$33.5k+$1.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$32k$33k$34kOct 8Oct 23Nov 7

Skill rankings: Top 5% in Android Studio

Ranked by MRR among everyone on Upwork with the skill.

  1. 2Android Debug Bridge18 freelancers · 🇵🇸 #1Top 11%
  2. #5Android Tablet26 freelancers · 🇵🇸 #1Top 19%
  3. #12Android NDK94 freelancers · 🇵🇸 #1Top 13%
  4. #20System Analysis219 freelancers · 🇵🇸 #2Top 9%
  5. #27Data Structures418 freelancers · 🇵🇸 #1Top 6%
  6. #42Android Studio805 freelancers · 🇵🇸 #1Top 5%
  7. #57XML717 freelancers · 🇵🇸 #1Top 8%
  8. #62Android SDK805 freelancers · 🇵🇸 #1Top 8%