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$15/hr
100%
Job Success
$10K+ earned
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Greetings! I am a passionate and highly skilled Mobile developer with experience in building high-quality, user-friendly, and robust Android applications using Java and Kotlin, and cross mobile applications using Flutter. My expertise spans from developing efficient backend logic, to ensuring seamless performance and scalability.
Core Competencies:
- Java & Kotlin Mastery: Extensive experience in developing native Android apps using Java and Kotlin, enabling me to deliver high-performance applications tailored to client specifications.
- MVVM Architecture: Proficient in implementing Model-View-ViewModel (MVVM) architecture,
ensuring clean, maintainable, and testable code.
- API Integration: Expertise in integrating RESTful APIs, third-party libraries, and SDKs to enhance app functionality.
- Firebase: Skilled in utilizing Firebase services for real-time databases, authentication, cloud storage, and push notifications.
- Agile Methodologies: Experience in working with Agile and Scrum methodologies, ensuring timely delivery and iterative improvement.
Why Choose Me?
- Client-Centric Approach: I prioritize understanding client requirements deeply and delivering
solutions that exceed expectations.
- Continuous Learning: Staying updated with the latest Android trends and technologies to provide modern and innovative solutions.
- Problem-Solving Skills: Proven ability to troubleshoot and resolve complex technical issues
efficiently.
- Excellent Communication: Clear and proactive communication to ensure smooth collaboration and project success.
Let's Build Something Great Together!
If you're looking for a dedicated mobile developer to bring your app idea to life or enhance your existing application, feel free to reach out. I'm excited to work on challenging projects and contribute to your success!
Hossam E.
has worked
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$20/hr
$500+ earned
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I'm a professional Android Developer having 4+ years of experience in Native Android Development. I have worked for some popular clients including VISA, Pepsi, Lenovo, Adobe, HP, Pinterest, Cloudflare, Warner Brothers, and many others.
I know both Kotlin and Java for Android App Development. I prefer using MVVM and MVI architecture for building Android apps. For the UI, I can use both Jetpack Compose and XML (with two-way DataBinding) for your apps. For clear separation of concerns, code maintainability, and fast build times, I use a multi-modular approach for Android Projects.
I always make sure to write Unit Tests, UI Tests, and Integration Tests for all the code. For Jetpack Compose projects, I use layout debugging and layout inspection to make sure there are no unnecessary recompositions. This makes sure your apps run as fast as possible.
I have great experience in Version Management tools including Git and GitHub.
I have extensive experience working in cross-functional teams where I have interacted with people from different regions all over the world. I have excellent communication skills.
Muhammad Safi U.
has worked
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Pakistan
$25/hr
$800+ earned
Offers consultations
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I am an android developer. I can design or make applications using android studio. I know java to design to a good level as well as I know kotlin also to a good level. I can design backend of applications using asp. Net web api and sql. I used same backend services In my final year Project. I can also use Google firebase for backend development.
Usama S.
has worked
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$75/hr
100%
Job Success
$100K+ earned
Start of list.
End of list.
8 plus Years of experience in android development worked 70+ fully functional apps
I am a professional mobile developer specializing in Android App Development. I have a bachelor's degree in Software Engineering.
Highlights
worked 70+ fully functional applications for Android devices with more than 1M+ downloads.
Known for writing efficient, maintainable, and reusable code.
Proficient in design, data structures, problem-solving, and debugging.
Expert in the interaction between various devices and versions of Android.
BS Software Engineering degree
Currently, I have these applications on my personal android developer account:
• Muslim Matrimonials app (Firebase backend)
• Audiobooks free download (API call)
• Ok Ameer Urdu assistant (Firebase backend)
• Copy hashtags for Instagram (web scraping and API call)
• Video touch lock for youtube - locki touch lock(100,000+ downloads with 4.1 ratings )
• Animated gif live wallpaper - Lite(700,000+ downloads with 4.0+ ratings)
• Snap map fake location spoofer(100,000+ downloads with 4.1 ratings)
• Champion trophy live score
• Latest Urdu news updates
• Jang epaper QR Code Reader
• Pakistani Urdu news
Professional Technical Skills:
Deep understanding of Android SDK
Android Studio
MVVP(android new ViewModel lib)
JSON/Volley
Firebase
Libraries integration like Facebook, YouTube, Exo player,Rxjava
Google play services e.g. Google map
Android Annotation.
Material Design
Data Binding
RX android
Kotlin Programming
Java Programming
Web scrapping
Design patterns
Github
Tensorflow
Proguard
Reverse engineering
SQL lite with ROOM lib
Constraint layout
Non-Technical Skills
Passionate
I can very quickly learn to new technologies like Kotlin, android new architecture components, and so on
Collaboration and communication
Writing
Bonus! A Good Idea
Youtuber
Understanding of Google plays policies.
I am very active on StackOverflow and Github.
Looking forward to working with you.
Let's build the strong and trusted relationship
Hamza R.
has worked
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Bosnia and Herzegovina
$30/hr
$2K+ earned
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Senior Android developer with 9 years of hands-on experience in streaming applications, BLE device integration, and real-time data processing. I’ve developed fitness and virtual activity applications, Android TV apps, and set-top box software using ExoPlayer, Dagger/Hilt, MVP/MVI, and modern Android standards. I focus on clean architecture, performance, and delivering stable, production-ready solutions.
Becir O.
has worked
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$29/hr
100%
Job Success
$1K+ earned
Offers consultations
Start of list.
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• 5+ years of experience as a Mobile App Developer specializing as an Android Developer and Flutter Developer.
• Strong expertise as a Mobile App Developer with deep knowledge of Android Kotlin, Java, and Dart.
• Proven background as an Android Developer and Flutter Developer across FinTech, AdTech, and EdTech projects.
• Hands-on experience as a Mobile App Developer integrating third-party APIs for scalable applications.
• Solid architectural mindset as an Android Developer focused on performance and UX.
Are you looking for a reliable Mobile App Developer who can also act as a senior Android Developer or an experienced Flutter Developer? 🚀
I bring extensive hands-on expertise as a Mobile App Developer, delivering high-quality solutions as both an Android Developer and Flutter Developer. Whether you need a native Android solution or a cross-platform app, I’m ready to help.
📱 Android Developer Expertise
As an Android Developer, I’ve delivered multiple production-ready applications with a focus on scalability and clean architecture. My experience as a Mobile App Developer allows me to approach Android development from both technical and product perspectives.
Android Toolkit (Android Developer focus):
• Java & Kotlin — core stack of every Android Developer project
• XML, Material Design, Jetpack Compose — essential tools for any Android Developer
• SQLite & Room — data handling by an experienced Mobile App Developer
• Retrofit, OkHttp, Gson — API integration as a professional Android Developer
• Dagger & Hilt — clean architecture every Android Developer should follow
• Coroutines & Flow — asynchronous programming mastered by a senior Mobile App Developer
Each app I build as an Android Developer meets high standards of performance and maintainability.
🌐 Flutter Developer Mastery
As a Flutter Developer, I build fast, consistent cross-platform applications with a native feel. My role as a Mobile App Developer helps ensure business logic and UI remain aligned across platforms.
Flutter Toolkit (Flutter Developer focus):
• Dart & FlutterFlow — core stack of every Flutter Developer
• Firebase Auth, Google & Apple Sign-In — secure solutions from a Flutter Developer
• Google Maps API — location-based features by an experienced Mobile App Developer
• Firebase Cloud Messaging — real-time updates from a senior Flutter Developer
• BLoC & Riverpod — scalable state management used by every strong Flutter Developer
Whether it’s CRM, LMS, or EdTech, I deliver results as a Flutter Developer with product thinking.
🏗️ Architecture & Best Practices
As a Mobile App Developer, I apply proven patterns:
• MVP, MVC, MVVM, MVI — standard for every Android Developer
• BLoC & Riverpod — best choice for a scalable Flutter Developer workflow
Clean architecture is a must for any professional Mobile App Developer.
🔒 Security & Performance
Every Mobile App Developer project I deliver focuses on:
• Data encryption
• Performance optimization
• GitHub, GitLab, Azure workflows
This mindset separates a senior Android Developer and Flutter Developer from the rest.
💻 Databases & Experimentation
As a versatile Mobile App Developer, I work with:
• SQLite
• PostgreSQL
• Firebase
I continuously experiment to grow as an Android Developer and Flutter Developer.
🎯 Let’s Build Your App
If you need a results-driven Mobile App Developer, a reliable Android Developer, or a skilled Flutter Developer — let’s connect and turn your idea into a production-ready application.
Bohdan P.
has worked
.
Associated with
GoHard
$300K+
earned
$40/hr
100%
Job Success
Available now
Offers consultations
Start of list.
End of list.
I’m a Top Rated Plus Senior Android Developer with 8+ years of experience building production-ready Android apps, native Android applications, Android TV apps, Fire TV apps, Google TV apps, and hardware-connected mobile solutions using Kotlin, Java, Android SDK, Firebase, REST APIs, BLE, Flutter, Dart, and modern Android architecture.
My strongest Upwork track record is in native Android app development, especially projects involving Kotlin Android development, Java Android development, Android TV app development, Fire TV app development, BLE Android app development, Firebase Android app development, REST API integration, offline voice Android apps, VOSK integration, media streaming apps, IoT Android apps, and enterprise mobile applications.
I help startups, agencies, and product teams build, fix, modernize, and scale Android products that need clean code, stable performance, reliable architecture, and production-ready delivery.
Core Android Development Services
Native Android App Development
I build high-quality native Android apps using Kotlin, Java, Android SDK, Jetpack Compose, XML layouts, MVVM, Clean Architecture, Coroutines, Flow, StateFlow, Hilt, Retrofit, Room Database, Firebase, REST APIs, WebSockets, and Google Play Store deployment workflows.
Kotlin Android Development
I develop modern Kotlin Android apps with scalable architecture, clean UI implementation, API integration, authentication, push notifications, background services, Firebase integration, and Play Store-ready production builds.
Java Android App Development
I maintain, improve, debug, and modernize Java Android apps, including legacy Android applications, Java to Kotlin improvements, SDK upgrades, API updates, performance fixes, crash fixing, ANR fixing, UI improvements, and long-term Android app maintenance.
Android TV & Fire TV App Development
I build and improve Android TV apps, Fire TV apps, and Google TV apps with remote-control navigation, D-pad focus handling, media streaming, ExoPlayer, VOD/OTT features, signage systems, custom TV interfaces, REST API integration, and production deployment support.
BLE Android App Development
I develop BLE Android apps for IoT devices, healthcare devices, smart hardware, Bluetooth Low Energy communication, device scanning, pairing, connection management, real-time data transfer, background synchronization, and stable hardware connectivity.
Firebase, REST API & Backend Integration
I integrate Firebase Authentication, Firestore, Realtime Database, Firebase Cloud Messaging, Firebase Analytics, Firebase Crashlytics, REST APIs, WebSockets, third-party APIs, payment systems, in-app purchases, admin panels, backend-driven mobile features, and secure authentication flows.
Android App Bug Fixing & Performance Optimization
I can help fix Android crashes, ANRs, memory leaks, slow performance, Firebase bugs, API issues, Android TV navigation issues, BLE connection issues, Play Store release problems, Android SDK issues, UI bugs, background service issues, and production app stability problems.
Relevant Project Experience
Android TV / Fire TV App Development
Role: Android TV App Developer / Fire TV App Developer / Native Android Developer
Built and improved Android TV and Fire TV applications involving media playback, signage systems, remote navigation, connectivity features, REST API integration, Android SDK features, ExoPlayer, and production deployment.
Offline Voice Android App with VOSK
Role: Android Developer / Kotlin Developer / Java Android Developer
Developed offline voice-driven Android functionality using VOSK integration, intent detection, native Android architecture, and production-ready Android app workflows.
BLE & IoT Android Apps
Role: BLE Android Developer / Android App Developer / IoT Mobile App Developer
Worked on BLE and IoT-connected Android solutions involving device communication, Bluetooth Low Energy scanning, pairing, real-time sync, healthcare-style hardware workflows, data handling, and stable connection management.
Enterprise Android App Development
Role: Senior Android Developer / Kotlin Android Developer / Java Android Developer
Delivered Android app development, API integration, Firebase integration, bug fixing, app maintenance, performance optimization, Android SDK upgrades, and long-term support for business and enterprise mobile applications.
Flutter Experience
I also work with Flutter app development for selected cross-platform projects when clients need Android and iOS support from a shared codebase. My strongest proven Upwork track record is native Android development using Kotlin and Java, but I can also support Flutter apps, Dart, Firebase Flutter integration, REST API integration, Flutter bug fixing, and production deployment.
Clients hire me when they need a dependable Senior Android Developer who can take ownership, understand requirements clearly, write maintainable code, solve complex technical problems, and deliver stable production-ready apps
Zeshan S.
has worked
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India
$25/hr
100%
Job Success
$7K+ earned
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Experienced Android Developer skilled in Kotlin and Java with a passion for creating high-quality, innovative applications. Proficient in building and optimizing UI using a modern framework, Jetpack Compose. Familiar with the latest tools, technologies, frameworks, and best practices to build modular, scalable, and high-quality Android Apps
Programming Languages:- Kotlin, Java, C, and Javascript
Frameworks:- Jetpack Compose, Room Database, Dagger Hilt, Retrofit, Ktor, Node.js, etc.
Additional skills:- Problem Solving, Debugging, Version control, Linux Environment, API Devlopment
Tools:- Android Studio, Visual Studio Code, Intelli J IDEA, Postman, Git
Rohit V.
has worked
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$15/hr
100%
Job Success
$3K+ earned
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🏆 Top Rated
✔️ 𝟭𝟬𝟬% Client Success
📱 𝟓+ Years of Android Expertise
📁 𝟮𝟬+ Projects Completed
📈 Developed Apps with 𝟏𝟎𝟎𝐤+ Downloads, ensuring scalability & high performance
As an experienced Android developer, I build secure, high-performance, and intuitive mobile applications, including AI-powered features such as intelligent chatbots, smart automation, and AI-driven functionality. I deliver scalable, feature-rich solutions with a strong focus on performance, security, and user experience.
I have contributed to apps with thousands of users, optimizing performance and enhancing usability. Whether integrating AI into an existing app or developing a new product from the ground up, I create future-ready solutions using modern technologies and industry best practices.
𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭 𝐭𝐨 𝐬𝐭𝐚𝐫𝐭 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐚𝐩𝐩 𝐚𝐧𝐝 𝐛𝐫𝐢𝐧𝐠𝐢𝐧𝐠 𝐢𝐭 𝐭𝐨 𝐥𝐢𝐟𝐞!
📌 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀:
Android App Development | Mobile App Development | Kotlin | Java | XML | Jetpack Compose | KMP | CMP | Kotlin Multiplatform | MVVM | MVI | Clean Architecture | REST API | LLM API Integration | GraphQL | Firebase | Room Database | Hilt | Dagger | Retrofit | Ktor | Coroutines | Jetpack Components | Performance Optimization | In App Purchases | AdMob | CI/CD | Debugging | Android Studio | Unit Test | Git
Bilal A.
has worked
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$45/hr
100%
Job Success
$40K+ earned
Offers consultations
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✅ 𝟭𝟬𝟬% 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗦𝘂𝗰𝗰𝗲𝘀𝘀
✅ 𝟐𝟎𝟎𝟎+ 𝐉𝐨𝐛𝐬 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞𝐝 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤
Android Developer | Kotlin Developer | iOS Developer | Flutter Developer | Mobile Developer
With 15+ years of experience as an Android developer and mobile developer, I help startups and businesses build scalable, high-performance mobile applications for Android and iOS platforms.
As a senior Android developer, Kotlin developer, and mobile developer, I specialize in native Android development using Kotlin, Java, Jetpack Compose, and Android SDK technologies. I also work as a Flutter developer and collaborate on cross-platform mobile development projects requiring scalable architecture and modern UI/UX solutions.
I have extensive experience building:
* Android apps
* iOS apps
* Flutter apps
* SaaS mobile platforms
* enterprise mobile solutions
* AI-powered mobile apps
* MVP mobile applications
* business automation apps
Core Mobile Development Skills
Android Developer / Kotlin Developer
* Kotlin development
* Java development
* Android SDK
* Jetpack Compose
* RxJava
* Android Studio
* Material Design 3
* Firebase
* Supabase
* Google APIs
* REST APIs
* GraphQL
* CI/CD pipelines
iOS Developer / Flutter Developer
* Flutter development
* Cross-platform mobile development
* iOS app collaboration
* Responsive mobile UI
* Mobile app architecture
* API integrations
* Payment gateway integrations
* App Store & Google Play deployment
UI/UX Focused Mobile Developer
As a mobile developer and Android developer, I focus heavily on UI/UX quality and smooth mobile experiences. I work closely with Figma designs and build responsive, visually polished mobile applications optimized for performance, accessibility, and scalability.
Performance Optimization
I specialize in optimizing Android apps and mobile applications for:
* memory management
* UI rendering
* API performance
* smooth animations
* high FPS performance
* scalable backend communication
My experience as a Kotlin developer and Android developer allows me to modernize legacy Android applications without requiring complete rewrites.
# Why Clients Choose Me
Clients hire me as an Android developer, mobile developer, Flutter developer, and Kotlin developer because I focus on:
* long-term maintainable architecture
* stable mobile app development
* scalable mobile products
* responsive communication
* clean code
* production-ready delivery
I have successfully delivered mobile applications for startups, agencies, SaaS platforms, and enterprise businesses worldwide.
If you’re looking for an experienced Android developer, iOS developer, Flutter developer, Kotlin developer, or mobile developer to build or scale your mobile product, let’s connect.
# Keywords
Android developer, mobile developer, Kotlin developer, Flutter developer, iOS developer, native Android developer, Android app developer, mobile app developer, Kotlin app developer, Flutter app developer, Android SDK, Jetpack Compose, Java developer, cross-platform developer, Firebase, Supabase, REST API, GraphQL, mobile UI/UX, mobile application development, Android Studio, Google APIs, payment gateway integration, CI/CD, scalable mobile applications, enterprise mobile development.
Roman Z.
has worked
.
Associated with
Onix-Systems, LLC
$30M+
earned