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Mohsen M.

Mohsen M.

Senior Android Developer| Kotlin & Java | Scalable Apps for 1M+ Users

Android Developer | 8+ Years | 1M+ Users Worldwide With 8+ years of Android development experience, I’ve designed, built, and optimized apps trusted by over 1M users globally—including high-impact projects like Getaround and HyreCar. I specialize in writing clean, maintainable code and delivering scalable, high-performance applications with seamless user experiences. As a Top-Rated Plus Freelancer on Upwork, I’ve earned $20,000+ with a 100% Job Success Score, a testament to my reliability, quality, and client satisfaction. Whether you need a new app from scratch or want to enhance an existing one, I ensure performance, scalability, and user delight. 🛠️ Core Skills Languages & Architecture: Kotlin, Java, MVVM, Clean Architecture UI/UX & Interaction: Jetpack Compose, Navigation, Motion Layout, Material Design, Custom Views, Accessibility APIs & Communication: REST, GraphQL, Retrofit, Coroutines, RxJava, Socket.IO Firebase & Cloud: FCM, Analytics, Crashlytics, Remote Config App Publishing & Payments: Google Play Console, In-app Purchases, Stripe, Payment Gateways DevOps & Tooling: Git, CI/CD (GitLab), Docker, Fastlane Advanced Features: Hilt/Dagger, Location Services, Multi-language Support, Offline Handling, Performance Optimization, PDF/Excel Generation 🌍 Industry Experience 🚗 Car Sharing & Rentals: Getaround (1M+ users), HyreCar (500K+ users) 🩺 Healthcare & Wellness: Medicine Reminder, Alzheimer’s Detection, BMI Calculators 🛍️ E-commerce & Marketplaces: Sozer Jewelry, Weat Local Marketplace 🎙️ Media & Streaming: Silvers Radio, Streaming Radio Apps 🏋️ Fitness & Lifestyle: Custom Workouts, Freight Booking (FreightPrint) 🚀 Key Achievements ✔ Integrated advanced SDKs: Stripe (Payments), Mitek (ID Verification), Sendbird (Messaging), Instabug (Bug Reporting) ✔ Automated builds & releases with CI/CD pipelines in GitLab + Firebase distribution 💡 Why Work With Me? 🔹 Strong problem-solving skills – quick and efficient issue resolution 🔹 Proactive communication – clear updates, no guesswork 🔹 Clean code advocate – maintainability & scalability first 🔹 User-first mindset – intuitive, engaging, and accessible apps 🔹 Continuous learner – always up to date with the latest Android trends 📩 Let’s build your next Android app—scalable, performant, and user-friendly.

🇨🇦Ottawa, Canada$3/hr100% JSS5.00 (15)Since Sep 2022

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#138,845 / 412k
🇨🇦Country#2,562 / 7,133
Revenue, last 30 days
$0
Total earnings
$20k

Billed in all: $22k

World#138,845 / 412k
🇨🇦Country#2,562 / 7,133
Per project
$1.2k
Projects, last 6 months
0
World#209,850 / 412k
🇨🇦Country#3,126 / 7,133
Projects in all
17

Across 20 contracts

80% fixed20% hourly
World#149,089 / 412k
🇨🇦Country#2,661 / 7,133

Earnings, last 30 days

$21.7kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$21,250$21,500$21,750$22,000Oct 8Oct 23Nov 7

Skills