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Akshay S.
$14/hr
100% Job Success
$40K+ earned
Available now
Offers consultations
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Hi, I’m Akshay Solanki 👋 I’m a React Native Developer with 8+ years of experience building mobile apps for iOS and Android. I mainly help startups and businesses: ✦ Build apps from scratch ✦ Improve existing apps ✦ Fix bugs and performance issues ✦ Add new features and integrations A lot of clients come to me when their app is slow, unstable, or the previous developer couldn’t complete the work properly. That’s usually where I step in. What I can help you with Mobile App Development → React Native (CLI & Expo) → Cross-platform apps for iOS & Android → Modern and user-friendly UI → App optimization and bug fixing → App Store & Play Store deployment → Authentication & user management Full Stack Development → Node.js, ExpressJS, NestJS → REST APIs & GraphQL → Third-party API integrations → MongoDB, PostgreSQL, MySQL → Firebase & Supabase → AWS / Azure / Google Cloud AI Features → OpenAI API integration → AI chatbots → Smart automation features → AI-powered mobile apps Industries I’ve worked with ✦ E-commerce & Marketplace ✦ Healthcare & Wellness ✦ FinTech & Payment Apps ✦ EdTech Platforms ✦ Logistics & Delivery ✦ SaaS & Startup MVPs ✦ Booking & Service Apps ✦ Social Networking Apps ✦ Fitness & Lifestyle Apps How I usually work I like to keep things simple and clear. 1. Understand your idea and requirements 2. Suggest the best approach 3. Build clean and scalable solutions 4. Test everything properly 5. Launch and provide ongoing support No over-promising. No confusion. Just honest and reliable work. Skills & Technologies Mobile ✦ React Native ✦ React Native CLI ✦ Expo ✦ iOS & Android Development Frontend ✦ React.js, Next.js ✦ JavaScript, TypeScript ✦ HTML5, CSS3 ✦ Tailwind CSS, Bootstrap Backend ✦ Node.js, ExpressJS, NestJS ✦ REST APIs & GraphQL Database ✦ MongoDB ✦ PostgreSQL ✦ MySQL ✦ Firebase, Supabase Cloud & DevOps ✦ AWS, Azure, Google Cloud ✦ Docker, Kubernetes ✦ CI/CD Pipelines ✦ Git, GitHub, GitLab Why clients work with me → Clear communication → Clean and maintainable code → Stable and scalable apps → On-time delivery → Long-term support Let’s keep it simple If you have an app idea or need help improving an existing app, feel free to send me a message. We can discuss your project and see if I’m the right fit 👍 ✅ Keywords React Native Developer | React Native Expert | React Native App Developer | React Native Mobile App Developer | Mobile App Developer | Mobile Application Developer | Cross Platform App Developer | Hybrid App Developer | React Native CLI | React Native Expo | Expo Developer | iOS Developer | Android Developer | iOS App Developer | Android App Developer | Mobile UI Developer | Mobile UI/UX Developer | App Performance Optimization | Mobile App Optimization | App Maintenance | App Bug Fixing | App Deployment | Play Store Deployment | App Store Deployment | Full Stack Developer | Full Stack Mobile Developer | MERN Stack Developer | Frontend Developer | Backend Developer | Node.js Developer | Express.js Developer | NestJS Developer | React.js Developer | Next.js Developer | JavaScript Developer | TypeScript Developer | HTML5 | CSS3 | Tailwind CSS | Bootstrap | REST API Developer | GraphQL Developer | API Integration | Third Party API Integration | Authentication System | JWT Authentication | OAuth Integration | MongoDB | PostgreSQL | MySQL | Firebase | Supabase | SQL Database | NoSQL Database | Database Design | Database Management | AWS | Amazon Web Services | Azure Cloud | Google Cloud Platform | Docker | Kubernetes | CI/CD | CI/CD Pipeline | Git | GitHub | GitLab | Cloud Deployment | AI Mobile App Developer | OpenAI API | ChatGPT Integration | AI Chatbot Developer | Generative AI | AI Automation | AI Integration | Startup MVP Developer | SaaS Application Developer | Scalable App Development | Marketplace App Developer | E-commerce App Developer | Booking App Developer | Delivery App Developer | FinTech App Developer | Healthcare App Developer | EdTech App Developer | Social Networking App Developer | Real Time App Developer | Firebase Realtime Database | 𝐒𝐨𝐜𝐤𝐞𝐭.𝐢𝐨 Developer | Push Notification Integration | Payment Gateway Integration | Stripe Integration | Razorpay Integration | PayPal Integration | Google Maps Integration | GPS Tracking App Developer | Twilio API Integration | WebRTC Developer | Agile Development | Clean Architecture | Redux | Context API | MVVM Architecture | Scalable Mobile Apps | Secure Mobile App Development | AI Powered Mobile Apps | Cloud Based Mobile Apps | React Native Firebase | API Development | App Scaling | Mobile Backend Developer | Responsive Mobile Apps | End-to-End App Development | Startup App Developer | SaaS Developer | MVP App Development | Mobile Product Development | User Authentication | Mobile App Testing | Mobile App Support | Performance Tuning | Real Time Chat App Developer | Notification System Integration | AI Chatbot Integration | OpenAI ChatGPT Apps | Enterprise Mobile Apps | Business App Developer
Akshay S. has worked .
Jitendra J.
$18/hr
92% Job Success
$200K+ earned
Available now
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📈 $200K+ Earned | 13+ Years Experience | 50+ Apps Launched I build scalable, high-performing mobile and web apps from the ground up so you don’t need to hire multiple freelancers. From design to deployment, I make sure your app is fast, secure, and user-friendly. 🚀 Core Services:- - Mobile App Development: Android (Kotlin, Java), iOS (Swift, Objective-C) - Cross-Platform Apps: Flutter, React Native - Backend Development: Node.js, PHP, Python, Firebase, AWS, MongoDB, MySQL - AI Integrations: ChatGPT, Azure OpenAI, LLaMA 2, AI automation - Cloud Solutions: Firebase, AWS, Azure - Payment Systems: Stripe, PayPal, Razorpay, in-app purchases 🏆 Selected Success Stories:- - Healthcare SaaS App – HIPAA-compliant telemedicine platform with AI symptom checker. - Marketplace App – Built from scratch with Firebase backend, integrated Stripe payments, and real-time chat. - Fintech Mobile Banking – Real-time KYC verification, fraud detection, and secure payment processing. - Live Streaming Platform – HD streaming, video-on-demand, and AI-powered content recommendations. 💡 Why Clients Hire Me:- - 12+ Years Android Development | 9+ Years iOS Development | 8+ Years Flutter & Hybrid - 50+ apps launched with 4.8★ average rating - Strong track record in Healthcare, Fintech, E-commerce, Education, SaaS, AI - End-to-end delivery: Idea → UI/UX → Development → Launch → Maintenance - Clear communication, on-time delivery, and scalable solutions 🧠 AI & Machine Learning Expertise:- - AI Chatbots, Recommendation Engines, Predictive Analytics - OpenAI GPT-4, Azure OpenAI, LLaMA / LLaMA 2 - AI integration for Healthcare, Fintech, E-commerce, SaaS 📩 Let’s Build Something Great - Message me with your idea and I’ll send you a tailored action plan, realistic timeline, and cost estimate based on your exact needs. 💼 Domain I have worked:- Android Development, iOS Development, Mobile App Development, Kotlin Development, Xcode Development, Swift Development, Android Studio Development, GitHub Repo Expert, Flutter Expert, Flutter Development, GPS Implementation, Hybrid Mobile Development, AWS Authorization, Cloud Based Integration, Firebase Expert, SaaS Expert, B2B & B2C Expert, Full-Cycle Product Development, Startup App Prototyping, Chatbot Development, AI Chatbots Development, AI Based Healthcare Development, AI Based Financial Development, AI SaaS Project Development, Integrate Open AI in Multiple Project Development, Custom App Development.
Jitendra J. has worked .
Inventco Software Pvt. Ltd.
Associated with
Inventco Software Pvt. Ltd.
$20K+
earned
Haris S.
$70/hr
100% Job Success
$900K+ earned
Available now
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I’m a Top-Rated Senior Full Stack Developer with 13+ years of experience building scalable web and mobile applications for startups, agencies, and enterprise clients. I specialize in delivering high-performance, user-focused solutions across both front-end and back-end development, with a strong focus on clean architecture, scalability, and long-term maintainability. ✅ Top Rated Plus – Expert-Vetted Top 1%
 ✅ 13+ Years of Professional Experience
 ✅ Full Stack Web & Mobile Application Development
 ✅ Strong Experience with Startups, SaaS Platforms & Enterprise Solutions Technical Expertise: Mobile:
Flutter, React Native, Swift, Java CMS & E-Commerce:
WordPress, Shopify, WooCommerce, HubSpot, Drupal Frontend:
React, Angular, Vue.js, Next.js, HTML5, CSS3, Tailwind CSS, Bootstrap Backend:
Node.js, Express.js, Django, Python, Laravel, .NET Databases:
PostgreSQL, MySQL, MongoDB, Firebase DevOps & Cloud:
Git, Docker, CI/CD, AWS, Azure, Nginx I have extensive experience leading projects from concept to deployment, building robust APIs, custom platforms, mobile applications, and scalable cloud-based systems while ensuring high code quality and seamless user experiences.
Haris S. has worked .
Developers Lounge LLC
Associated with
Developers Lounge LLC
$300K+
earned
$30/hr
88% Job Success
$100K+ earned
Available now
Offers consultations
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✅ Upwork Top Rated Plus & Verified Mobile App Developer AI-Powered React Native & Flutter Developer | BLE Hardware + LLM Integration Specialist Most mobile apps fail not because of bad code but because the developer couldn't handle what came after the screens. BLE sync breaks. The AI feature needs to talk to real hardware. The App Store review gets rejected. That's exactly the gap I've built my career around closing. I'm Muhammad. 7 years building production mobile apps, $100K+ earned across 38 contracts on Upwork, and a Top Rated Plus track record that speaks for itself. WHAT I ACTUALLY BUILD: ✅ React Native apps, from blank repo to App Store, end-to-end ✅ Flutter apps with BLE/NFC hardware integration (custom protocols, firmware handshake, real-time sync) ✅ AI-powered mobile features with OpenAI, Claude, Gemini APIs wired directly into native UX (not bolted on top) ✅ LLM + RAG pipelines built into mobile, not web wrappers ✅ Node.js backends designed for mobile clients ✅ Native iOS (Swift) when cross-platform is the wrong call SHIPPED & VERIFIED: • Medalite: Flutter app with custom BLE light therapy mask. Real-time hardware sync, firmware handshake. $12,300. ⭐ 5 stars. • Chaser: Long-term React Native engagement platform. $21K+. Client kept building. • iOS Teleprompter App: High-complexity Swift + React Native, real-time text rendering. $6,500. ⭐ 5 stars. • AI Analytics for iOS: LLM-powered insights wired into a native iOS app. 135 hours. ⭐ 5 stars. • Audio App MVP: Full Flutter build. Client returned for more. Industries: Healthcare · Fitness · Fintech · IoT · AI/ML I respond within 10 to 15 minutes. I don't ghost milestones. If the scope is clear, send it and I'll give you a number. If it's complex, I'll ask the right questions and we'll figure it out together.
Muhammad I. has worked .
TECHVADERS
Associated with
TECHVADERS
$70K+
earned
Muhammad W.
$20/hr
100% Job Success
$10K+ earned
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I help businesses build 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬 that are modern, scalable, easy to use, and ready for long-term growth. As a 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with 8+ years of experience, I specialize in 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐀𝐈 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐇𝐲𝐛𝐫𝐢𝐝 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐢𝐎𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐔𝐗 & 𝐔𝐈, 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐬𝐢𝐠𝐧, 𝐌𝐨𝐛𝐢𝐥𝐞 𝐔𝐈 𝐃𝐞𝐬𝐢𝐠𝐧, 𝐚𝐧𝐝 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐑𝐞𝐝𝐞𝐬𝐢𝐠𝐧. I build reliable 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐚𝐩𝐩𝐬 𝐟𝐨𝐫 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐚𝐧𝐝 𝐢𝐎𝐒 using 𝐃𝐚𝐫𝐭, 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞, 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐀𝐏𝐈𝐬, 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭, 𝐚𝐧𝐝 𝐜𝐥𝐨𝐮𝐝-𝐛𝐚𝐬𝐞𝐝 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬. Whether you need a new mobile app from scratch, a redesign of an existing app, or AI-powered features added to your product, I can help you plan, develop, launch, and scale it. 𝐇𝐨𝐰 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 𝐘𝐨𝐮 𝐂𝐮𝐬𝐭𝐨𝐦 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Build smooth, scalable, and user-friendly 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐚𝐩𝐩𝐬, 𝐢𝐎𝐒 𝐚𝐩𝐩𝐬, 𝐡𝐲𝐛𝐫𝐢𝐝 𝐚𝐩𝐩𝐬, 𝐚𝐧𝐝 𝐜𝐫𝐨𝐬𝐬-𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 using Flutter and Dart. 𝐀𝐈 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Add 𝐀𝐫𝐭𝐢𝐟𝐢𝐜𝐢𝐚𝐥 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 𝐚𝐧𝐝 𝐀𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 features such as AI chat, smart recommendations, automation, image recognition, and intelligent user experiences. 𝐌𝐨𝐛𝐢𝐥𝐞 𝐔𝐈/𝐔𝐗 & 𝐀𝐩𝐩 𝐃𝐞𝐬𝐢𝐠𝐧 Create clean, modern, and conversion-focused 𝐔𝐗 & 𝐔𝐈, 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐬𝐢𝐠𝐧, 𝐌𝐨𝐛𝐢𝐥𝐞 𝐔𝐈 𝐃𝐞𝐬𝐢𝐠𝐧, 𝐚𝐧𝐝 𝐀𝐩𝐩 𝐃𝐞𝐬𝐢𝐠𝐧 for smartphones and mobile platforms. 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐑𝐞𝐝𝐞𝐬𝐢𝐠𝐧 & 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧 Improve existing apps with better performance, cleaner UI, bug fixes, code cleanup, and improved user engagement. 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 Integrate Firebase, REST APIs, payments, push notifications, authentication, admin panels, databases, and third-party services. 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐄𝐱𝐩𝐞𝐜𝐭 You will get a mobile app that is fast, secure, visually polished, easy to use, and built with clean scalable architecture. I focus on business goals, smooth user experience, clear communication, and reliable delivery from idea to App Store and Play Store launch. 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬: Mobile App Development | App Development | Flutter | AI App Development | Hybrid App | iOS Development | Android App | Dart | Android App Development | UX & UI | JavaScript | Mobile App Design | Mobile UI Design | Mobile App Redesign | Smartphone | Artificial Intelligence | AI Development | App Design | REST APIs | GraphQL | AWS | Docker | Kubernetes | MongoDB | PostgreSQL | iOS | Android | AI-Powered Mobile Apps | App Store Deployment | Play Store Deployment
Muhammad W. has worked .
Muhammad A.
$40/hr
96% Job Success
$200K+ earned
Available now
Offers consultations
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𝗠𝗼𝘀𝘁 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽𝘀 𝗱𝗼𝗻’𝘁 𝗳𝗮𝗶𝗹 𝗯𝗲𝗰𝗮𝘂𝘀𝗲 𝗼𝗳 𝗰𝗼𝗱𝗲, 𝘁𝗵𝗲𝘆 𝗳𝗮𝗶𝗹 𝗯𝗲𝗰𝗮𝘂𝘀𝗲 𝘁𝗵𝗲𝘆 𝗮𝗿𝗲𝗻’𝘁 𝗯𝘂𝗶𝗹𝘁 𝗳𝗼𝗿 𝘀𝗰𝗮𝗹𝗲, 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲, 𝗮𝗻𝗱 𝘂𝘀𝗲𝗿 𝗿𝗲𝘁𝗲𝗻𝘁𝗶𝗼𝗻. I'm a Mobile Application Developer specializing in Mobile App Development and Flutter Mobile App Development for startups, SaaS companies, and growing businesses. Over the past 6+ years, I have helped founders transform ideas into successful products through strategic Mobile App Development. As a Mobile Application Developer, I focus on building scalable applications that deliver excellent user experiences while supporting long-term business growth. Results I've Delivered - 5M+ App Downloads - 50+ Mobile Applications Delivered - Top Rated Plus on Upwork - $200K+ Client Revenue Generated - Apps serving 900K+ users 🚀 𝗪𝗵𝗮𝘁 𝗜 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲 𝗜𝗻 📱 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • Cross-platform app development using Flutter • High-performance iOS & Android applications • Scalable Flutter Mobile App Development solutions • Enterprise-grade Flutter applications 💼 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • End-to-end Mobile App Development • MVP Development for startups • SaaS Mobile App Development • Mobile Application Development from concept to launch • App modernization and scaling ⚙️ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • Firebase & Supabase Integration • REST APIs & Third-Party Services • Real-Time Chat & Notifications • Payment Gateway Integration • Cloud Infrastructure & Backend Systems 🎯 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 ✔ Proven Mobile Application Developer with real-world product experience ✔ Strong expertise in Mobile App Development for startups and enterprises ✔ Specialized in Flutter Mobile App Development for iOS & Android ✔ Focused on performance, scalability, and maintainability ✔ Clear communication and reliable delivery Whether you need a Mobile Application Developer to build your product from scratch or an expert in Flutter Mobile App Development to scale an existing application, I can help turn your vision into a successful mobile product. 𝗦𝗘𝗢 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Mobile App Development · Mobile App Developer · React Native Developer · Flutter Developer · iOS App Development · Android App Development · Cross-Platform App Development · AI Mobile App Developer · AI App Development · Full Stack Developer · Web App Development · Next.js Developer · React.js Developer · Supabase Developer · MVP Development · Flutter App Developer · Firebase Developer · Custom Mobile App Development · AI-Powered App Development · ChatGPT Mobile Integration · OpenAI API Mobile App · Mobile App Development for Startups · Mobile App Development for Enterprises · App Development · Mobile App Design · API Integration · Senior Mobile App Developer · Ride Sharing App Development · Fitness App Development · Healthcare App Development · Food Delivery App Development · Dating App Development · E-commerce Mobile App · Fintech Mobile App · AI Mobile App Development
Muhammad A. has worked .
Parveen K.
$20/hr
100% Job Success
$100K+ earned
Available now
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🥇 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 | 💯 100% 𝑾𝒐𝒓𝒌 𝑺𝒂𝒕𝒊𝒔𝒇𝒂𝒄𝒕𝒊𝒐𝒏 | 👍 𝑪𝒐𝒏𝒔𝒊𝒔𝒕𝒆𝒏𝒕 𝑱𝒐𝒃 𝑺𝒖𝒄𝒄𝒆𝒔𝒔 🥇 7+ years of proven expertise in React, Next.js, TypeScript, Node.js, Python, and Full Stack Development 🥇 Strong experience in React Native for hybrid mobile app development 🏆 Skilled in building scalable, performance-driven web and mobile applications 🤝 Strong skills in communication, project management, team leadership, and task planning ❤️ Passionate about JavaScript, TypeScript, React, Next.js, and modern frontend engineering Core Skills - ✔ React · Next.js · TypeScript · JavaScript ✔ Node.js · Python · REST APIs ✔ React Native (Hybrid Apps) ✔ Redux · Tailwind · SCSS ✔ Git · Docker · Jira · Figma Why Clients Work With Me- ✅ Top Rated Plus ✅ 12,000+ hours tracked ✅ Strong communication ✅ Reliable delivery and clean code Whether you're building a new platform from scratch, enhancing an existing system, or launching a mobile app, I bring a clear development process and a collaborative mindset to ensure everything moves smoothly. Share your project details anytime, I’d be glad to assist and help you bring your ideas to life!
Parveen K. has worked .
AceWebX
Associated with
AceWebX
Muhammad Hamza F.
$25/hr
100% Job Success
$200K+ earned
Available now
Offers consultations
Start of list.
End of list.
I build high quality mobile apps for startups and businesses. From idea → MVP → App Store launch → scaling to thousands of users. If you’re looking for a developer who understands product, users and business goals (not just code), you’re in the right place. I specialize in building: • MVP & Startup mobile apps
 • AI / ChatGPT powered apps
 • Healthcare & HIPAA-compliant apps
 • Marketplace & SaaS mobile platforms
 • Firebase / Node.js backends
• Long-term app scaling & maintenance Whether you need a brand new app or improvements to an existing one, I can take full ownership of the mobile product. What I Can Build For You Full Mobile App Development * iOS + Android apps from scratch * Cross-platform apps (Flutter / React Native) * App Store & Play Store deployment * Mobile app architecture & scaling AI Integration for Mobile Apps * ChatGPT / OpenAI integration * AI chatbots & assistants * AI recommendations & personalization * AI document scanning & NLP features * AI moderation & fraud detection 🚀 Startup MVP Development * Rapid MVP builds * Idea validation & product strategy * Scalable backend with Firebase / Node.js * Analytics, payments, notifications 🔧 App Improvement & Scaling * Performance optimization * Bug fixing & refactoring * Feature expansion * Long-term maintenance Tech Stack & Tools Mobile:
Swift • Kotlin • Flutter • React Native Backend & Cloud:
Firebase • Node.js • REST APIs • Cloud Functions AI & Machine Learning:
OpenAI / ChatGPT • TensorFlow • PyTorch • NLP Realtime & Integrations:
WebRTC • SIP • FHIR APIs • Google Maps SDK • Payments • Push Notifications How I Work Clients work with me because I:
 • Communicate clearly and consistently
 • Think like a product owner, not just a developer
 • Deliver clean, scalable, production-ready code
 • Take ownership from idea to launch I care about building apps that succeed in the real world, not just apps that compile. Let’s Build Your App 🚀 If you need a reliable senior mobile developer to bring your app to life (or take it to the next level), send me a message and let’s discuss your project. "I’m currently available for new projects."
Muhammad Hamza F. has worked .
Sergey K.
$50/hr
100% Job Success
$600K+ earned
Available now
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👋 Hi there ! Looking for an elite Senior Android Developer to architect, secure, and scale powerful Android applications? With 20+ years in native Android development, I've worked across every major SDK, library, and device evolution - delivering fast, secure, and maintainable apps that perform under pressure. I’ve developed and launched 100+ Android apps with over 20 million total downloads and an average Google Play rating of 4.8+. My work has helped reduce crash rates by 70%, shrink APK sizes by up to 60%, and increase app startup speed by 45%. From startups to Fortune 500s, I’ve led 12+ dev teams in delivering mission-critical, high-ROI apps for fintech, defense, media, and beyond. 🏆 Why Work With Me for Android Development? ✔️ 20+ years of deep Android expertise with Java, Kotlin, Jetpack, and NDK ✔️ Delivered 100+ apps to production — 20M+ installs, 4.8+ average rating ✔️ Reduced load times by 45% through advanced performance profiling ✔️ Security-hardened apps using R8, ProGuard, LLVM, NDK, and SELinux policies ✔️ Scaled enterprise-grade apps with 99.99% uptime and real-time data sync ✔️ Played key roles in HIPAA-, FIPS-, and PCI-DSS-compliant mobile solutions 🚀 Core Android Development Services: 📌 Native Android App Development 🔹 Expert in Kotlin, Java, Android SDK, Jetpack Compose, View System 🔹 Responsive UIs across all screen sizes using ConstraintLayout, MotionLayout, Compose 🔹 Modular architecture (MVVM, Clean Architecture, MVI, VIPER) 🔹 Advanced state handling with LiveData, Coroutines, Flow, RxJava 🔹 CameraX, MediaCodec, ExoPlayer for media-heavy apps 🔹 Full device compatibility from Android 5.0+ through latest Android 14 📌 Android Security & Low-Level Optimization 🔹 Obfuscation, code hardening, and NDK-level protection 🔹 Reverse engineering mitigation via Frida/Root detection 🔹 Low-level optimization with ARM NEON, RenderScript, JNI, and custom kernels 🔹 SELinux customization for hardened AOSP builds 🔹 Hardware integration with sensors, gyroscopes, accelerometers, and BLE 📌 Multimedia, Games & Streaming 🔹 Real-time video/audio with FFmpeg, OpenGL, Vulkan, MediaCodec 🔹 Game engines: Unity3D, LibGDX, custom OpenGL renderers 🔹 Augmented Reality with ARCore, face tracking, 3D overlays 🔹 Advanced drawing tools, canvas-based animation, real-time filters 📌 Backend Integration & Architecture 🔹 REST, GraphQL, gRPC, WebSockets, Firebase, and custom socket protocols 🔹 Secure data sync, push notifications (FCM), and analytics (Firebase, Amplitude) 🔹 CI/CD pipelines using Jenkins, Bitrise, GitHub Actions, and custom Gradle workflows 🔹 Offline sync and caching strategies for resilient performance 📌 Scalable Architecture & Cross-Platform 🔹 Kotlin Multiplatform, Clean Architecture, modularized multi-feature apps 🔹 Deep understanding of Android App Bundles, Play Feature Delivery, and Instant Apps 🔹 Flutter experience for select cross-platform needs (Dart/Flutter SDK) 📌 Database & Networking 🔹 SQLite, Room, Realm, SQLDelight, Firebase Realtime/Firestore 🔹 JSON parsing with Gson, Moshi, org.json 🔹 API integration using Retrofit, OkHttp, Apollo Client 🌟 Results-Driven Impact ✅ 70% reduction in crash rates using advanced testing and monitoring ✅ 45% increase in startup speed through bytecode and resource optimization ✅ 60% smaller APK sizes using modularization and build optimization ✅ 50% faster delivery cycles using custom CI/CD pipelines ✅ 40–65% increase in user retention through performance and UX refinement ✅ 99.99% stability in live apps with over 1M monthly active users 💡 Focused On What Matters Most: ✔️ Clean, scalable, testable code that teams can maintain and extend ✔️ Proactive debugging and crash prevention strategies ✔️ User-first experiences built for performance and engagement ✔️ Modern, maintainable app structure that grows with your business ✔️ Full lifecycle support-from idea to Play Store launch and beyond 🚀 Ready to Build a High-Performance Android App? Let’s talk! Whether you're starting from scratch, rebuilding a legacy app, or scaling for millions-I'll help you build it right, fast, and with precision.
Sergey K. has worked .
Ixobit Corporation (DBA Sibers)
Associated with
Ixobit Corporation (DBA Sibers)
$20M+
earned
Avaneesh S.
$15/hr
98% Job Success
$100K+ earned
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Experienced React Native Developer specializing in cross-platform mobile application development for iOS and Android platforms. I help startups, SMBs, and enterprises build scalable, high-performance, and user-friendly mobile applications with modern UI/UX, robust backend integration, and seamless cross-platform functionality. I have expertise in developing business apps, SaaS platforms, healthcare apps, eCommerce solutions, booking systems, CRM applications, social networking apps, and enterprise mobility platforms using React Native, JavaScript, TypeScript, Firebase, and REST APIs. Whether you need a custom mobile app, MVP development, React Native migration, API integration, app modernization, or ongoing maintenance, I can provide complete end-to-end mobile app development services. 𝗖𝗢𝗥𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 ⟷⟷⟷⟷⟷⟷ ✅ React Native App Development ✅ Cross-Platform Mobile Applications ✅ iOS App Development ✅ Android App Development ✅ Mobile UI/UX Development ✅ REST API Integration ✅ Firebase Integration ✅ SaaS Mobile Applications ✅ Real-Time Mobile Applications ✅ Push Notifications ✅ Payment Gateway Integration ✅ App Performance Optimization ✅ App Store & Play Store Deployment ✅ Backend Integration & APIs ✅ Mobile App Maintenance & Support What I Can Help You With ⟷⟷⟷⟷⟷⟷⟷⟷⟷ ✔ React Native App Development ✔ Cross-Platform Mobile Apps ✔ iOS & Android Applications ✔ SaaS Mobile Platforms ✔ Real-Time Chat Applications ✔ Healthcare & Booking Apps ✔ CRM & Business Applications ✔ API Integration & Backend Connectivity ✔ Firebase Authentication & Notifications ✔ App UI/UX Enhancements ✔ App Performance Optimization ✔ App Store Publishing ✔ Bug Fixing & Ongoing Maintenance 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗬 𝗖𝗔𝗣𝗔𝗕𝗜𝗟𝗜𝗧𝗜𝗘𝗦 ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ React Native, Flutter, Android & iOS App Development, AvaloniaUI (Cross-Platform .NET UI), JavaScript, TypeScript, ReactJS, NodeJS, ExpressJS, Laravel, PHP, MySQL, PostgreSQL, MongoDB, Redis, SQLite, Elasticsearch, REST APIs, GraphQL, Firebase, AWS, Cloud Services, Git, Bitbucket, Docker, Webpack, JIRA, Trello 𝗪𝗛𝗬 𝗖𝗛𝗢𝗢𝗦𝗘 𝗨𝗦 ✔Scalable and maintainable mobile app architecture ✔Responsive and modern mobile UI/UX ✔Fast communication and regular updates ✔Agile development methodology ✔On-time project delivery ✔Experience with startup and enterprise applications ✔Long-term maintenance and support 𝗔𝗣𝗣𝗟𝗜𝗖𝗔𝗧𝗜𝗢𝗡𝗦 𝗪𝗘 𝗗𝗘𝗩𝗘𝗟𝗢𝗣 • Chat & Messaging Applications • E-Learning & Education Platforms • Dating & Social Networking Apps • Utility & Payment Applications • Cryptocurrency & Wallet Apps • Inventory & Employee Management Systems • Music & Live Streaming Apps • Image Editing Tools • E-Commerce & Marketplace Apps • Event Management Systems • Salon & Booking Apps • Map, Location & Navigation-Based Apps 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 𝗪𝗘 𝗦𝗘𝗥𝗩𝗘 Healthcare, Fintech, E-Commerce, Education, Real Estate, Logistics, Entertainment, Retail, Startups, SaaS, and Enterprise Solutions. 𝗖𝗢𝗠𝗠𝗨𝗡𝗜𝗖𝗔𝗧𝗜𝗢𝗡 & 𝗣𝗥𝗢𝗝𝗘𝗖𝗧 𝗠𝗔𝗡𝗔𝗚𝗘𝗠𝗘𝗡𝗧 ⦿ Upwork Message Board ⦿ JIRA ⦿ Azure DevOps ⦿ Asana ⦿ Trello ⦿ Zoho Projects We are committed to delivering reliable, scalable, and high-quality React Native and Flutter mobile applications that help businesses launch faster, engage users effectively, and grow confidently in the digital marketplace.
Avaneesh S. has worked .
Flexsin Technologies
Associated with
Flexsin Technologies
$10M+
earned