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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
.
$40/hr
100%
Job Success
$100K+ earned
Offers consultations
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On-device AI Integration with MediaPipe or LiteRT. I'm an Android Developer / Mobile Developer with 10 years of experience helping small businesses , startups and indie founders translate their vision into scalable, high-performance apps from 0 to launch using the latest technologies ( Kotlin , Coroutines , Jetpack Compose , Jetpack libraries , Kotlin Multiplatform for cross platform apps).
I specialize in:
- on-device AI integration using MediaPipe / TFLite / Google ML Kit ( Object detecton , Face detection , Pose detection , Text summarizing / OCR , text-to-speech , speech-to-text );
- video / media editing apps ( FFMpeg , AndroidX Media3 );
- building media , social , and productivity tools (not games);
- fixing app performance , memory leaks , crashes and ANRs , especially in complex or “vibe-coded” apps.
🌟🌟🌟🌟🌟 Recent feedback :
"I was particularly impressed by his strong attention to detail - nothing was overlooked, and the quality of the work consistently met high standards. He showed real commitment to the project, staying engaged and proactive throughout the development process. His regularity and consistency in delivering work made collaboration smooth and reliable." - Neil
🚀 Also I've been building my own Android apps so that gives me a deep understanding of not only a technical part but also ASO and monetization strategy.
✅️ Recent large-scale projects:
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PDF Maker & Reader (130k+ installs , 🌟4.6 on Google Play)
Role: Android Developer / Android App Developer / Kotlin Developer
I recently built this high-performance Android app from scratch based on Figma mockup using Kotlin.
It allows users to quickly convert images to PDF and edit existing PDFs using a fast, local-first architecture. The app has achieved 130k+ downloads and 8k monthly active users on Google Play, with the crash rate lower than 0.1%.
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US Medical Education App (COMQUEST for COMLEX & COMAT Prep)
Role: Android Developer / Android App Developer / Mobile Developer
As part of an international team alongside iOS Developer and Web Developer, I built this Android app from scratch based on Figma designs for US medical students. Continue providing ongoing support for this project, ensuring the mobile app remains a stable and reliable tool for users.
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US Automotive Video Suite app
Role: Android Developer / Android App Developer / Mobile Developer
In collaborating with an iOS Developer and a Full Stack Developer, I built two native Android apps from scratch as a clone of iOS apps (Dealer Video Inventory and Dealer Video Suite) that allows dealers to capture high-quality vehicle inventory videos and photos. These projects helps dealers increase sales through personalized video.
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🌟 🌟🌟🌟🌟 "Dmitri is a pleasure to work with. He's Android programming skills are exceptional. He's always professional and easy to work with. He is very methodical in his approach. Which at times has resulted in delivery scheduling slipping a little but I rather have a good product than a hastily put together product. We're continuing to work with Dima for other projects." - Philip
Whether you are looking for a Mobile Developer to lead a new project or an Android Developer to optimize an existing Java / Kotlin codebase or optimize performance, my goal is to provide technical clarity and long-term stability.
As a team player for cross-platform projects I have a proven track record of working alongside iOS developers to ensure smooth releases.
I also have specific experience collaborating with Flutter Developers and Full Stack Developers to bridge the gap between cross-platform Flutter / React Native code and the system features specifically by developing custom Java / Kotlin modules to handle native Android OS functionality that standard Flutter plugins can't reach.
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🚀 My core stack:
🔸️Languages: Java , Kotlin
🔸️UI: XML , Jetpack Compose
🔸️Architecture: MVVM , MVI , Clean Architecture
🔸️Native: Android SDK , Android Studio
🔸️Multiplatform: Kotlin Multiplatform ( KMM / KMP ) / Compose Multiplatform ( CMP )
🔸️Key features: Camera , Photo & Video capture and edit using FFMpeg , OpenGL , OpenCV ; GPS , Location , Chat , Background syncronization , WorkManager and foreground services, ofline-first approach, on-device AI / LLM , VPN / WireGuard , ExoPlayer / Media3
🔸️On-device AI integration : Video analysis , Image recognition , Object detection , Face detection , Pose Detection , Camera stream analysis , Text-to-Speech , Speech-to-Text ( MediaPipe / Google AI Edge , TensorFlow / TFLite , Google ML kit ).
🔸️Cloud AI integration : OpenAI , Gemini API
Dmitriy C.
has worked
.
Associated with
MobileDevPro
$45/hr
100%
Job Success
$30K+ earned
Available now
Offers consultations
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I'm the mobile app developer you're looking for! Why? I build Android and cross-platform products that ship fast, scale cleanly, and create real business value.
ABOUT ME
• 9+ years and 40+ apps shipped as a mobile app developer across Android, iOS, and cross-platform builds
• 25 Total jobs, 100% JSS, Top Rated status, 5-star feedback as a mobile app developer on Upwork
• Avg. response time 0-4 hours, ready to start within 24 hours as your mobile app developer
• 500K+ downloads across 15+ published apps as an Android developer and iOS developer
• 99.9% crash-free sessions, 40% fewer production crashes through Firebase and Sentry monitoring as a full stack mobile app developer
• 9+ yrs. Senior Android/Kotlin Engineer, 100% JSS, Top Rated mobile app developer with 5-star feedback across 25 completed jobs
• EU/US time-zone overlap, replies within 0-4 hour
WHERE I DELIVER
• As Android developer kotlin - 20+ native builds, 30% faster release cycles through MVVM, MVI, and Clean Architecture
• As iOS developer - 10+ Swift/SwiftUI apps, 25% smoother onboarding through native iOS patterns as an iOS Android developer
• As iOS Android developer - 12+ dual-platform products maintained from a single codebase, cutting maintenance cost by 35%
• As app developer iOS Android - 8+ cross-platform launches, 4-6 weeks faster time-to-market than building two native teams
• As flutter developer and react native specialist - 6+ cross-platform apps, 20% lower dev cost vs. separate native builds
• As full stack developer and web developer - 10+ backend APIs and admin dashboards powering every mobile app developer stack end-to-end
• As ai mobile app developer - 5+ AI-powered features shipped (voice, vision, LLM), cutting manual workflows by 40%
• As Android game developer - 3+ Unity-integrated apps with real-time rendering and physics
• As mobile developer and app developer iOS - 15+ App Store and Google Play submissions handled start to finish
INDUSTRY IMPACT
• GPS & Navigation - 6+ live-tracking map apps, 99.5% location accuracy, powering fleet and delivery use cases as a mobile app developer
• Warehouse & Inventory - 4+ barcode-scanning apps built on Zebra SDK, cutting inventory errors by 30% and pick times by 25% as an Android developer
• Retail & Hospitality Kiosks - 3+ self-service kiosk apps handling 1,000+ daily transactions each as a mobile app developer
• Voice & Speech - 3+ speech-recognition apps with 95%+ transcription accuracy as an ai mobile app developer
• Proximity & BLE - 5+ beacon-based apps improving proximity detection accuracy by 25% as an Android developer kotlin specialist
• Full Stack Delivery - 10+ end-to-end builds spanning backend, web developer dashboards, and mobile clients as a full stack mobile app developer
TYPES OF APPS I'VE BUILT
• 15+ GPS-enabled map apps with live location tracking and turn-by-turn navigation as a mobile app developer
• 4+ warehouse management apps with barcode scanning and real-time inventory sync as an Android developer kotlin specialist
• 3+ kiosk apps for retail, hospitality, and self-service terminals processing 1,000+ transactions daily
• 3+ speech-recognition and voice-to-text apps with 95%+ transcription accuracy as an ai mobile app developer
• 5+ BLE beacon and proximity-detection apps as an Android developer, plus 3+ Unity-integrated builds as an Android game developer
• 6+ cross-platform apps as a flutter developer, and 2+ additional flutter developer rebuilds migrating legacy hybrid apps to native performance
• 8+ camera-focused media capture tools and 5+ AI-powered conversational interfaces as an app developer iOS Android
HOW I BUILD
• 20+ CI/CD pipelines configured, 35% faster build and release cycles as a mobile app developer
• Kotlin, Java, Swift, Flutter, React Native - 40+ apps delivered across Android developer, iOS developer, and app developer iOS Android engagements
• Jetpack Compose, RxJava, Coroutines, Dagger, Hilt, Koin, MVVM, MVI - core toolkit for every mobile developer and full stack mobile app developer build
• Firebase, Android Profiler, Sentry, custom analytics - 99.9% crash-free sessions across 15+ live apps as a mobile app developer
• Git, Jenkins, Jira, automated test coverage - structured delivery as a full stack developer and app developer iOS for teams of any size
• GPS/Location Services, Google Maps SDK, Speech Recognition, BLE, Unity, Zebra SDK - hardware depth that sets an iOS Android developer apart from a generic app developer
Clients keep hiring me as their mobile app developer because the numbers hold up: 9+ years of experience, 25 Total jobs, 100% JSS, Top Rated status, 5-star feedback, and a 0-4 hour response time. Whether you need an Android developer for a native build, an iOS developer for App Store polish, an app developer iOS Android team for a dual-platform launch, or an ai mobile app developer to add intelligent features - I'm ready to contribute from day one.
📩 Let's build something robust, and engineered to last.
Viktor I.
has worked
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India
$25/hr
100%
Job Success
$7K+ earned
Start of list.
End of list.
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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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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Ukraine
$30/hr
100%
Job Success
$30K+ earned
Start of list.
End of list.
10+ Skills | 15+ Years experience in Engineering field
Android, Java/Kotlin/Python/C/SQL, UI/UX, Git, GitHub/GitLab/Bitbucket, Android Studio/IntelliJ IDEA/Eclipse, Trello/GitLab board, SOLID Firebase, Bluetooth and much more
- developing projects from scratch (setup, architecture, features development)
- deveopment for embended devices
- support legacy projects
- integration of new technologies
- working with Google guidelines
I can just do any job for you, no matter how difficult the task you describe I do
$40/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
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✅ Available for FULL TIME Work ✅ Expert in Mobile & 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐀𝐩𝐩 Development
✅ 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐌𝐨𝐛𝐢𝐥𝐞 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬, 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 & 𝐋𝐋𝐌 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬
✅ Android • iOS • Flutter • Kotlin
👀 Click Hire or Invite Senior Android Developer & Mobile Architect
👉 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐆𝐄𝐓
✔️ Senior Android Developer - 15+ years of experience, 2,000+ jobs completed on Upwork, 100% project success, scalable architecture deployment, and extreme client impact.
✔️ Android Developer Kotlin Specialist - modern modular builds, Jetpack Compose expertise, and production-ready engineering standards.
✔️ Mobile Developer & App Developer iOS Android Systems - faster release cycles, cross-platform collaboration, and defensive coding setups for startup MVP and enterprise environments.
👉 𝐀𝐈-𝐍𝐀𝐓𝐈𝐕𝐄 𝐌𝐎𝐁𝐈𝐋𝐄 𝐄𝐍𝐆𝐈𝐍𝐄𝐄𝐑𝐈𝐍𝐆 𝐄𝐗𝐏𝐄𝐑𝐓
✔️ Strategic 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 & Prototyping - leveraging AI-native workflows, agentic coding systems, and autonomous 𝐀𝐈 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 practices to accelerate delivery.
✔️ Multi-Agent Workflow Orchestration - implementing prompt engineering, spec-driven development, and human-in-the-loop 𝐀𝐈 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠.
✔️ 𝐀𝐈-𝐀𝐬𝐬𝐢𝐬𝐭𝐞𝐝 Testing & DevOps - utilizing AI-assisted debugging, AI-powered refactoring, screenshot-driven UI iteration, and AI-enhanced CI/CD automation with Docker and Kubernetes.
👉 𝐀𝐂𝐇𝐈𝐄𝐕𝐄𝐌𝐄𝐍𝐓𝐒
✔️ 15+ years, 25,000+ hours, hundreds of applications delivered as a leading Android developer, mobile software engineer, and Android game developer across global markets.
✔️ 2,000+ contracts successfully executed on Upwork through native Android app development, SDK research, and legacy app modernization projects.
✔️ 100,000+ active users supported on high-load production environments using RxJava, Dependency Injection, and real-time streaming workflows.
✔️ 10,000+ active device configurations managed within distributed architectures, utility applications, and BLE sync modules through Android Kotlin refactoring.
✔️ High-converting customer flows across enterprise mobile solutions, fintech portals, and marketplace applications.
✔️ Faster background processing and improved efficiency through API integrations, JNI integration structures, and memory-leak profiling.
✔️ Shorter startup MVP timelines and fewer post-launch defects through Android Java to Kotlin migration and Google Play submission expertise.
👉 𝐖𝐇𝐄𝐑𝐄 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑
✔️ As an Android developer Kotlin expert - building reactive systems from scratch using Kotlin, Jetpack Compose, Android Jetpack, and modern architecture components.
✔️ As an experienced Android Java engineer - handling legacy support, backend API integrations, structural refactoring, and app modernization initiatives.
✔️ As a cross-functional mobile developer - driving end-to-end product development while collaborating with iOS developers, Flutter developers, and backend engineering teams.
✔️ As a native application architect - deploying MVVM, MVP, and Clean Architecture optimized for modern Google Play requirements.
✔️ As a long-term developer - providing ongoing testing and maintenance, feature additions, BLE and sensors integration, deep debugging, and backend support.
👉 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐘 𝐈𝐌𝐏𝐀𝐂𝐓
✔️ Real-Time Streaming & Utilities - media playback engines, real-time chat synchronization, background processing, and BLE communication.
✔️ Enterprise & Business Apps - secure offline-first structures, local synchronization, encrypted authentication, and performance optimization.
✔️ Android Game Development - rendering optimization, frame-rate scaling, interactive animations, and modular gaming logic.
👉 𝐇𝐎𝐖 𝐈 𝐁𝐔𝐈𝐋𝐃
✔️ Production-Ready Coding Standards: prioritizing robust Android architectures, responsive UI, API documentation, and clean developer handoff.
✔️ Agile Development & Scrum Frameworks: technical leadership, rapid feedback loops, and fast prototyping to capture market opportunities.
Looking for a reliable Senior Android Developer, Android Developer Kotlin Expert, or an experienced Mobile Developer who can build a native application from scratch, optimize legacy architectures, or orchestrate AI app integrations for long-term collaboration?
☎️ Let's connect! Send an invite and let's discuss your mobile application goals.
Vladimir B.
has worked
.
Associated with
Onix-Systems, LLC
$30M+
earned
$29/hr
100%
Job Success
$1K+ earned
Offers consultations
Start of list.
End of list.
• 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
United States
$50/hr
100%
Job Success
$100K+ earned
Start of list.
End of list.
I am an experienced programmer that wants to help you create your dream Android app! I believe that communication is key to making sure the finished product is exactly how you envisioned it.
Alexander P.
has worked
.
$53/hr
100%
Job Success
$20K+ earned
Start of list.
End of list.
With over 8 years of experience, I specialize in developing native Android applications for high-profile clients and businesses.
My expertise encompasses the entire app development process, from planning and development to publishing, maintenance, and support, ensuring the delivery of high-quality Android applications.
If you're seeking to create functional Android apps with effective design and performance, you've come to the right place. I understand how to satisfy your customers and increase your sales.
I take on a limited number of projects at a time, allowing me to provide the necessary focus and time each one deserves. My commitment to quality control ensures that every project receives meticulous attention.
Customer satisfaction is my top priority, and I consistently go the extra mile. I empathize with both my clients and their end-users, considering the unique needs, expectations, and preferences of the target audience. Throughout my process, I employ empathic design and techniques to uncover user values and aspirations.
Strengths and skills:
- Mastery of various architecture patterns, including MVP, MVVM, and MVI.
- Proficiency with Firebase services such as push notifications, dynamic linking, analytics, Crashlytics, real-time NoSQL databases, and cloud functions.
- Experience with Amazon Web Services, including EC2, API Gateway, S3 Buckets, Lambda functions, and push notifications.
- Skilled in Google services like authentication, Google+, voice recognition, image recognition, text processing, and machine learning.
- Familiarity with Dropbox storage APIs.
- Integration of social media platforms such as Twitter, LinkedIn, and Facebook for authentication, analytics, and crash reporting.
- Comprehensive knowledge of various application tools, including background services, system-level communications, file storage, notifications, offline apps, communication apps, wallpaper apps, and system tracking apps.
Development tools and professional techniques:
• Project Management Tools: Jira, Trello
• Version Control Systems: Bitbucket, GitHub, GitLab, etc.
• Communication Platforms: Skype, Zoom, Google Meet, Webex, Teams
• Android Studio
• IntelliJ IDEA
• Postman
• Charles Proxy
I am eager to establish long-term relationships with clients and build a strong, ongoing working partnership.
I will ensure that the overall budget is reasonable for you and your team. With lower maintenance costs, you can overcome any obstacles and lead a successful Android product to market.
Andrii C.
has worked
.