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$18/hr
100%
Job Success
$2K+ earned
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Android & iOS Developer | Kotlin | Swift Expert | 4+ Years of Experience
Hello! I am a skilled mobile app developer with over 4+ years of experience building high-quality, user-friendly mobile applications. I specialize in creating robust and scalable Android & iOS apps using **Kotlin**, **Swift** with a deep understanding of iOS SDK, Xcode, Android SDK, Android studio etc.
Key Skills:
✔ ** Kotlin & Swift** – Strong expertise in both programming language.
✔**Android & iOS SDK** – Proficient in core Android components and libraries.
✔**UI/UX Design** – Building intuitive interfaces that align with Material Design principles.
✔**APIs & RESTful Services** – Experienced in integrating third-party APIs and working with JSON, XML, and SOAP.
✔**SQLite & Room** – Database management for efficient data storage and retrieval.
✔**Firebase** – Implementing authentication, cloud storage, real-time databases, and push notifications.
✔**Git** – Version control for smooth collaboration and code management.
✔**Android Studio & X Code ** Expert in using the official Android & iOS IDE for development, debugging, and testing.
✔**Multithreading & Coroutines** – Handling background tasks for improved app performance.
I am passionate about creating impactful apps that provide seamless user experiences and help businesses achieve their goals. Whether you need a new app built from scratch, or maintenance and updates to an existing project, I’m here to bring your vision to life.
Let’s discuss how I can help you build your next mobile apps!😊
Associated with
DeployWork
$35/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
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👋 Welcome to my Upwork profile! I'm Kapoor Pankaj, a dedicated and versatile developer with a passion for crafting exceptional digital experiences. With a strong background in both AI and mobile/web development, I bring a unique blend of technical expertise and creative flair to every project I undertake.
🚀 Skills That Drive Results:
🤖 AI: ChatGPT-4, creating intelligent and interactive solutions.
📱 Mobile: Proficient in Native iOS (Swift, SwiftUI) and Native Android (Kotlin), Flutter, and React Native.
💻 Web: Skilled in React, Angular, Python (Django), and Laravel for user-friendly web interfaces with responsive designs.
🎨 Design: Adept at UI/UX design with a keen eye for aesthetics, using tools like Figma.
📊 Data: Experienced data analyst, translating raw information into actionable insights.
☁️ Cloud: Proficiency in AWS, Google Cloud, and Firebase for scalable and secure solutions.
Our first call?
Expect an in-depth Zoom discussion about your project, followed by a comprehensive plan based on your needs. If we're a good fit, let's move forward. If not, I can provide advice and referrals to ensure your project's success.
🚀 Workflow:
🎨 Understanding Your Vision: I start by closely collaborating with you to understand your project's goals and requirements.
📝 Design and Planning: Using my UI/UX expertise, I create design concepts that align with your vision and user expectations.
💻 Development: Leveraging the latest technologies, I bring designs to life with clean, efficient, and high-quality code.
🧪 Testing and Refinement: Rigorous testing ensures the functionality and performance of the application, followed by iterative refinements.
🗣️ Feedback and Collaboration: Transparent communication ensures that you're involved at every stage, and your feedback shapes the project.
🚀 Final Delivery: I deliver the finished product that meets your expectations and aligns with industry best practices.
Specialize in:
💑 Dating app
📈 Custom ERP app
📱 Social media app
👥 Staff management app
⏱️ Time Tracking app
🎵 Music app
📹 Video Streaming app
📅 Calendars app
🛒 Grocery delivery app
🏢 Custom app for companies' internal use
💬 Chatting app
📷 Image Identification app
📅 Booking services
📱🔒 Phone lock app
👨👩👧👦 Parent control app
📚 Educational app
🧘♂️ Health and meditation app
📆 Appointment scheduling apps for service providers
Tech-Stack We Use:
📱 Mobile Development:
Android (Kotlin, Java, Flutter)
iOS (Swift, Objective-C, Flutter, SwiftUI, UIKit)
🌐 Website Development:
WordPress, Laravel, Vue.js, Angular, Python-Django, MERN Stack, React.js.
💻 Back-end Development:
Laravel, Python, React.js, Firebase
📊 Database:
MongoDB, MySQL, PostgreSQL, Firestore, Firebase Realtime Database, SQLite, RoomDB
🤝 Collaboration and Client Satisfaction:
Client satisfaction is at the heart of everything I do. I believe in transparent communication, regular updates, and an iterative approach to development that keeps my clients in the loop and ensures their vision is brought to life.
🌟 Let's Create Something Amazing:
Whether you need a cutting-edge AI-powered application, a sleek mobile app, a responsive website, or data-driven insights, I'm here to collaborate with you. Let's work together to transform your ideas into reality.
Complexities simplified to ensure a smooth process while you focus on your business.
Pricing:
The cost varies based on project requirements. Message me directly for a free custom estimate.
Turn your vision into a reality with me. Invite me now for high-quality mobile and web application development!
$30/hr
100%
Job Success
$80K+ earned
Start of list.
End of list.
Why Work With Me?
• 2500+ hours on Upwork—proven track record of reliability and expertise.
• Trusted by clients worldwide for delivering high-quality solutions.
• Recognised as a Top Rated Freelancer for years.
With over 10 years of experience in mobile app development, I excel at tackling challenges of all kinds. Whether it’s developing full-scale applications, building MVPs, or refactoring and optimizing code, I’m dedicated to bringing your ideas to life with precision and excellence.
I specialise in creating high-performance mobile applications using Swift, SwiftUI, UIKit, Kotlin, Jetpack Compose and AI-powered technologies to deliver outstanding user experiences. Leveraging Clean, MVVM and MVC architectures, I build scalable, maintainable apps tailored to your unique needs.
Core Technologies & Skills
Programming & Frameworks:
• Swift
• SwiftUI
• Combine
• Objective-C
• UIKit
• AVFoundation
• Kotlin
• Jetpack Compose
• Flutter
• Dart
Development Expertise:
• Auto Layout & Adaptive Layout
• Multithreading (Async/Await)
• Core Data & SQLite
• REST API Integration
• Alamofire (AFNetworking)
• SDWebImage & SwiftyJSON
Source Control & Collaboration Tools:
• GitHub
• Bitbucket
• SVN
Project Management Tools:
• Jira
• Trello
iOS App Development | Mobile App Developer | Android | Kotlin | Flutter | React Native | MVP Development | Hybrid App
$16/hr
100%
Job Success
$200K+ earned
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✅ Over 13+ years of experience in mobile development for both iOS and Android Native and Hybrid Platforms.
✅ Upwork Top Rated Talent.
✅ 94% Job Success Ratio, 200K+ Earnings.
✅ 6,500+ hours of experience working on clients & and projects.
👇 Huge experience in delivering mobile applications on a platform like:
✔ React Native
✔ Ionic
✔ Native Android App Development (Kotlin and Java)
✔ PhoneGap
✔ Flutter SDK
✔ iPhone, iPad Native App Development, and Mac OS X App development ( Objective-C and Swift )
✔ Xamarin( C# ), Xamarin.forms
👇 Fantastic exposure in the following industry to deliver high-quality products:
✔ Fitness and health applications.
✔ Dating Tinder-based applications.
✔ Events-based applications.
✔ Uber-based apps for finding service providers.
✔ Education audio and video apps.
✔ Travel apps for booking flights and hotels.
✔ Medical healthcare apps for doctors and patients.
✔ Geolocation apps for finding restaurants.
👇 Technical Skills-
✔ iOS & Swift Skill: Autolayout, Adaptive Layout, UIKit, MapKit, Animation, Core Data, Networking, CocoaPods.
✔ Programming Lang: C, C++, Objective-C, Swift, Java, Android, C#, Asp.Net, Dart.
✔ Software Tools: Android Studio, Xcode, Visual Studio, Eclipse, Source Tree, Git, Visio, Sprite Builder, Tiled.
✔ Android Skills: Fragments, Intents, Services, Broadcast Receiver, Provider, Material Design, Recycler View, Gradle.
Great experience supporting Data safety forms in Google Play Console
✔ Library Used: GSON, Retrofit, Picasso, Parse, OAuth, AFNetworking, MBProgressHud, ReacticeCocoa & more.
✔ Other: HTML, CSS, XML, JSON, Jscript, JQuery, PHP, UML, SQL, Rest APIs, Javascript (ES5, ES2015, TypeScript, CoffeeScript) - React, Redux, mobx.
✔ Specialization: Image Editing App, Video Editing Mobile App, BLE, Face Editor & Makeup App.
A great experience in computer vision in these areas Media Streaming, Color Detection, Edge Detection, Face Detection, Pose Detection, Hand Gesture Recognition, Image Segmentation & Classification & Colorization, and Object Tracking.
Regards,
Arvind J
Associated with
Softude by Systematix
$20/hr
100%
Job Success
$10K+ earned
Start of list.
End of list.
⭐ 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 | 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 | $𝟭𝟬𝗞+ 𝗘𝗮𝗿𝗻𝗲𝗱 | 𝟭𝟬+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲
I help startups, SaaS companies, and enterprises build high-quality mobile applications using Flutter, Android (Kotlin/Java), and modern AI technologies. Whether you're launching a new MVP, scaling an existing product, or adding AI-powered features, I deliver fast, scalable, and production-ready mobile solutions.
Over the past 10+ years, I've built mobile applications across Healthcare, FinTech, eCommerce, Logistics, Education, IoT, POS, Fitness, and Enterprise Software. My primary focus is Flutter cross-platform development backed by strong native Android expertise, allowing me to build apps that are both performant and maintainable.
I work closely with founders and product teams to transform ideas into polished mobile products—from UI implementation and backend integrations to Play Store deployment and ongoing feature development.
𝗖𝗢𝗥𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘
Flutter & Cross-Platform Development
• Flutter
• Dart
• State Management (Provider, Riverpod, Bloc)
• Responsive UI
• Custom Animations
• Offline-First Apps
Android Development
• Kotlin
• Java
• Android SDK
• Jetpack Compose
• MVVM
• Room Database
• Coroutines
• WorkManager
Backend & Integrations
• REST APIs
• GraphQL
• Firebase
• Supabase
• Authentication
• Push Notifications
• Google Maps
• Stripe
• Braintree
Hardware & Device Integration
• Bluetooth BLE
• NFC
• QR & Barcode Scanner
• Camera
• GPS
• Sensors
• POS Devices
AI Integration
• OpenAI
• Claude
• Gemini
• AI Chatbots
• AI Assistants
• OCR
• Speech-to-Text
• Text-to-Speech
• AI-powered Mobile Features
Additional Experience
• React Native
• .NET MAUI
Cloud & DevOps
• Firebase
• AWS
• Git
• Docker
• CI/CD
AI-Assisted Development
• Claude Code
• Cursor AI
• GitHub Copilot
• ChatGPT
• Gemini
• Windsurf
• v0 by Vercel
• Lovable
• Bolt.new
𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦
• Healthcare
• FinTech
• eCommerce
• Logistics
• Travel
• Education
• Fitness
• Food Delivery
• IoT
• Enterprise Applications
I believe great mobile apps are more than just clean code - they should be fast, intuitive, scalable, and built to support real business growth. I take ownership of every project, communicate proactively, and focus on delivering reliable solutions that users enjoy and businesses can confidently scale.
Whether you need a Flutter application, Android app, AI integration, or long-term product development support, I'd be happy to help.
Let's build something amazing together.
$19.99/hr
100%
Job Success
Available now
Offers consultations
Start of list.
End of list.
Hi there! 👋 I'm Ismail Saleem, a versatile developer with expertise in mobile, web, and desktop app development. With 5+ years of experience, I specialize in designing and building high-performance apps and delivering seamless user experiences.
🌟 What I Bring to the Table
🎯 Mobile App Expertise: Proficient in Flutter & React Native, I create apps that are efficient, aesthetic, and user-focused.
🌐 Web Development Pro: Skilled in Java Spring Boot, Node.js, and the MERN stack for robust and scalable web apps.
🖥️ Desktop Applications: Experienced in developing powerful, feature-rich desktop apps for various platforms.
🎨 UI/UX Design: Crafting intuitive designs that delight users and meet business goals.
🔧 Tech Stack: Flutter, React Native, Spring Boot, MERN, Firebase, RESTful APIs, MVC/MVVM/MVCS architectures, and more.
📱 Mobile App Experience
I’ve successfully developed and published apps in diverse industries, available on both the Google Play Store and the Apple App Store:
🛒 E-commerce: Shopping platforms and inventory management solutions.
💞 Meeting & Dating: Apps for connecting people and fostering relationships.
🚗 Transportation & Booking: Ride-sharing, booking, and navigation solutions.
📱 Social Media: Platforms that encourage interaction, sharing, and community-building.
⚙️ Utility Apps: Tools for productivity, convenience, and daily use.
🤝 Why Work With Me?
✅ Quality-Centric: Clean, maintainable code & exceptional user experiences are my top priorities.
💡 Problem Solver: I tackle challenges with creative and efficient solutions.
🕒 Reliable & Punctual: I respect deadlines and always deliver on time.
📞 Clear Communication: I value transparency and keep clients updated at every step.
💼 Let’s Build Something Amazing Together!
Whether it’s a mobile app, web solution, or a desktop application, I’m ready to bring your ideas to life. I have a proven track record with published apps and am always excited to take on new challenges. 🚀
📩 Let’s connect and create something extraordinary!
$25/hr
100%
Job Success
$60K+ earned
Available now
Start of list.
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From concept to launch, I build production-grade mobile applications that are scalable, secure, and built to deliver real business results.
I’m Hardeep, an experienced Mobile App Developer with over 10 years of hands-on expertise creating high-performance mobile apps for startups and enterprises. I specialize in native iOS and Android development, as well as React Native, with a strong focus on AI-driven features and modern app architectures.
Whether you’re launching an MVP or scaling an existing product, I help transform ideas into reliable, user-friendly mobile experiences that perform exceptionally well in real-world conditions.
==> Mobile Development Expertise:
------------------------------------------
I work extensively with iOS (Swift), Android (Kotlin), React Native, and Flutter to build fast, responsive, and maintainable mobile applications tailored to your business goals.
==> AI-Driven Features & Integrations:
---------------------------------------------
I integrate AI capabilities such as LLM APIs (GPT, Llama), conversational AI, and predictive models to enhance user engagement, automation, and decision-making within mobile apps.
==> Industry Experience:
------------------------------
I have delivered successful solutions across multiple domains, including FinTech, Healthcare (HIPAA-compliant apps), video streaming, subscription-based platforms, social and dating apps, and real estate solutions.
==> Payments, Streaming & Infrastructure:
--------------------------------------------------
My experience includes payment gateway integrations (Stripe, PayPal, Apple Pay, Google Pay), subscription systems, in-app purchases, and real-time video streaming using WebRTC, Twilio, Zoom, and Agora. I also handle CI/CD pipelines, app distribution, and cloud-backed mobile infrastructures.
==> How I Work:
-------------------
I follow Agile development practices, prioritize clear communication, and provide regular updates throughout the project lifecycle. My code is clean, scalable, and designed to support long-term growth and future enhancements.
If you’re looking for a reliable mobile app developer who understands native and cross-platform development and can seamlessly integrate AI-powered features, I’d be glad to collaborate.
Let’s build a high-performing mobile app that users love and businesses trust.
$25/hr
100%
Job Success
$500K+ earned
Offers consultations
Start of list.
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𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐀𝐈 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝟏𝟓,𝟎𝟎𝟎+ 𝐇𝐨𝐮𝐫𝐬 | 𝟏𝟑𝟎+ 𝐒𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬
I help startups and businesses build high-performance mobile applications with modern AI capabilities using React Native, Flutter, Swift, Kotlin, Firebase, and OpenAI integrations.
With 14+ years of experience in iOS and Android development, I specialize in creating scalable, user-friendly, and AI-powered mobile apps that improve user engagement and accelerate business growth.
𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 𝐘𝐨𝐮 𝐁𝐮𝐢𝐥𝐝
• AI-powered mobile applications
• ChatGPT / OpenAI integrations
• React Native & Flutter apps
• SaaS MVPs
• iOS & Android native apps
• AI chatbots & assistants
• Firebase backend systems
• Real-time chat applications
• Payment gateway integration
• GPS & location-based apps
• BLE / IoT mobile apps
• Admin dashboards & APIs
• App Store & Play Store deployment
𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 & 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐈’𝐯𝐞 𝐖𝐨𝐫𝐤𝐞𝐝 𝐖𝐢𝐭𝐡
startups
SaaS founders
MVP development
scaling mobile apps
long-term maintenance clients
💡 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
Mobile Development:
React Native, Flutter, Swift, Kotlin, Java, Objective-C , SDK Development
Backend & Cloud:
Firebase, Firestore, Node.js, GraphQL, MongoDB, REST APIs
AI & Modern Development:
OpenAI API, GPT-4o, Claude AI, Cursor AI, AI-assisted development workflows, AI chatbots, automation systems
Development Tools & Workflow:
Cursor, Claude Code, Windsurf, GitHub Copilot, VS Code, Xcode, Android Studio
#React Native #Flutter #iOS Development #Android App Development #Mobile App Development #Swift #Kotlin #Firebase #TypeScript #GraphQL #SaaS #MVP #API Integration
Associated with
ByteCipher Private Limited
$500K+
earned
$30/hr
100%
Job Success
$70K+ earned
Available now
Offers consultations
Start of list.
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Full Stack Developer | MERN Stack Developer | React Developer | Next.js Developer
Full Stack Developer with 11+ years of experience building scalable web applications, SaaS platforms, AI applications, marketplaces, dashboards, CRM systems, booking platforms, and enterprise software. As a Full Stack Developer, I help startups, founders, agencies, and businesses build modern digital products using React, Next.js, Node.js, MongoDB, Express.js, TypeScript, JavaScript, PostgreSQL, Supabase, and cloud technologies.
As a Full Stack Developer and MERN Stack Developer, I specialize in React Development, Next.js Development, Node.js Development, MongoDB Development, API Development, SaaS Development, and Full Stack Web Development. My experience as a React Developer includes responsive web applications, admin dashboards, client portals, marketplace platforms, CRM systems, eCommerce platforms, and enterprise applications.
As a Full Stack Developer and Next.js Developer, I build high-performance applications using React.js, Next.js, TypeScript, Tailwind CSS, REST APIs, GraphQL, Server Side Rendering, SEO Optimization, and scalable frontend architecture. My Full Stack Development experience covers startup MVP development, SaaS development, AI SaaS platforms, automation systems, and cloud-based business applications.
My services as a Full Stack Developer include:
✔ Full Stack Development
✔ MERN Stack Development
✔ React Development
✔ React.js Development
✔ Next.js Development
✔ Node.js Development
✔ Express.js Development
✔ MongoDB Development
✔ TypeScript Development
✔ JavaScript Development
✔ API Development
✔ SaaS Development
✔ AI Application Development
✔ Dashboard Development
✔ CRM Development
✔ Marketplace Development
✔ Web Application Development
✔ Enterprise Software Development
✔ Startup MVP Development
✔ Database Design
✔ Authentication Systems
✔ Stripe Integration
✔ OpenAI Integration
✔ Supabase Development
✔ PostgreSQL Development
As a Full Stack Developer, MERN Stack Developer, React Developer, and Next.js Developer, my focus is building scalable, maintainable, secure, and high-performing applications that help businesses grow, automate operations, improve user experience, and generate revenue.
If you're looking for a Full Stack Developer, MERN Stack Developer, React Developer, Next.js Developer, Node.js Developer, or Full Stack Web Developer who can take your project from idea to production, I'd be happy to discuss your requirements.
Associated with
Elexoft Technologies
$80K+
earned
$25/hr
100%
Job Success
$20K+ earned
Available now
Start of list.
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Hey!👋 Let's get started on your project and make it a success.
I'm Kisandas, a highly experienced Android developer with 6+ years of experience creating complex mobile applications.
📌My expertise lies in Android SDK, Java, Kotlin, and other associated technologies, and I have hands-on experience in Retail, Healthcare, Tracking, Real-estate, and Commercial Modern Applications development.
👉Android SDK
👉Java
👉Kotlin
👉Android Studio
👉RESTful APIs
👉Firebase services
👉Google Maps API
👉Google play service
👉Material Design
👉Push notifications
👉JSON/XML
👉SQLite, core database, PHP database
👉MVP/MVVM architecture
👉Retrofit
👉Jetpack
👉Social Networking Integration
👉Git/GitHub
👉Agile development
👉Debugging and troubleshooting
👉Cross-functional collaboration
👉Test-driven development (TDD)
👉Continuous integration/continuous deployment (CI/CD)
In summary, I am a fast, reliable, and high-quality Android developer who can handle complex projects from design to implementation. 🤗
✨I believe my expertise and experience make me a valuable asset to any team, and I look forward to discussing how I can contribute to your project.
Let's work together to build amazing applications!🤝
Associated with
DI Solutions | Top-Rated Agency | 100% Success Score | 1000+ Success Stories | AI Solutions | Website | Mobile Apps | SaaS