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$18/hr
100%
Job Success
$200K+ earned
Available now
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🚀 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 & 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐢𝐭𝐡 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬, 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐌𝐕𝐏𝐬, 𝐚𝐧𝐝 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 𝐟𝐨𝐫 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐧𝐝 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞𝐬.
I specialize in React Native, Flutter, React.js, Next.js, Node.js, TypeScript, and the MERN stack, delivering high-performance applications across iOS, Android, and Web. From product architecture and UI/UX implementation to backend development, cloud deployment, and scaling, I provide end-to-end product ownership.
Mobile Development
• React Native & Flutter Development
• iOS & Android Applications
• Cross-Platform Mobile Apps
• Firebase Integration
• Push Notifications
• Real-Time Chat & Messaging
• GPS & Location-Based Features
• App Store & Play Store Deployment
Full Stack Development
• React.js & Next.js
• Node.js & Express.js
• TypeScript & JavaScript
• MongoDB, PostgreSQL & MySQL
• REST APIs & GraphQL
• SaaS & Multi-Tenant Platforms
• Microservices Architecture
Cloud, DevOps & AI
I build scalable cloud-native applications using AWS, Azure, Docker, Kubernetes, CI/CD pipelines, and serverless technologies. I also leverage modern AI tools such as Cursor, GitHub Copilot, Claude Code, Windsurf, and OpenAI-powered workflows to accelerate development and deliver high-quality solutions.
My AI expertise includes OpenAI, Claude, Gemini, LangChain, LangGraph, AI Agents, RAG systems, chatbots, workflow automation, intelligent search, and custom AI-powered SaaS products.
Integrations
Stripe, PayPal, Twilio, Firebase, Google APIs, Microsoft APIs, HubSpot, Salesforce, CRM/ERP systems, social authentication, email/SMS automation, and custom third-party APIs.
Industries Served
Healthcare, Telemedicine, FinTech, E-commerce, Real Estate, Logistics, EdTech, Fitness & Wellness, Marketplace Platforms, On-Demand Services, Enterprise SaaS, and AI-powered products.
Why Work With Me?
✅ 10+ Years of Experience
✅ End-to-End Product Development
✅ Startup MVP to Enterprise Scale Expertise
✅ Clean, Scalable & Maintainable Code
✅ Fast Communication & Reliable Delivery
✅ Long-Term Technical Partnership
If you're looking for a React Native Developer, Flutter Developer, MERN Stack Developer, Full Stack Engineer, or AI Developer who can build and scale your product efficiently, let's connect.
Raman B.
has worked
.
Associated with
Techbit Solutions Pvt Ltd
$4M+
earned
$25/hr
100%
Job Success
Available now
Offers consultations
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🚀 Top Rated Flutter Developer | AI-Powered Apps | SaaS Solutions | Sales Automation Expert
I help businesses turn ideas into high-performance mobile & web applications that not only look great — but also increase revenue, automate workflows, and scale effortlessly.
With expertise in Flutter, TypeScript, and modern backend systems (Laravel/APIs), I build secure, fast, and user-friendly applications tailored for growth.
💡 What I Can Do for You:
📱 Cross-Platform Apps (Flutter) – iOS, Android & Web
🤖 AI Integrations – Chatbots, NLP, Recommendation Engines, Automation
💳 Payments & Subscriptions – Stripe, PayPal, Razorpay
📊 Sales Funnels & Automation Systems – Lead capture, follow-ups, CRM integrations
📈 Revenue Growth Solutions – Conversion optimization, user engagement tracking
🔁 Full Business Automation – From onboarding to payments & reporting
📍 Maps & Real-Time Features
🔐 Secure & Scalable SaaS Architectures
⚙️ CI/CD & Long-Term Maintenance
🧠 I’ve built real-world SaaS platforms with multi-user roles and automation workflows, including a live cargo system (RespectMart) that I actively maintain — giving me strong experience in handling production-level applications.
✨ Why Clients Work With Me:
Focus on business growth, not just development
Clean, scalable, and future-ready code
Strong communication & reliable delivery
Long-term partnership mindset
If you’re looking for someone who can build your app AND help increase your sales through smart automation, let’s connect and make it happen 🚀
Farooq T.
has worked
.
$35/hr
100%
Job Success
$100K+ earned
Start of list.
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I help startups and businesses build high-quality mobile apps (iOS/Android/React Native) and full-stack web products — on time, on budget, with zero hand-holding required. 100% Job Success | Top Rated | $100K+ earned on Upwork."
𝗛𝗲𝗿𝗲❜𝘀 𝘄𝗵𝗮𝘁 I 𝗯𝗿𝗶𝗻𝗴 𝘁𝗼 𝘁𝗵𝗲 𝘁𝗮𝗯𝗹𝗲:
💼 100+ ecstatic clients
🚀 150+ groundbreaking projects completed
⏰ 100k+ Earnings on Upwork
👨💻 Android and iOS brilliant developer (SWIFT, SWIFT UI, JAVA/KOTLIN)
👨💻 Full Stack Web apps (REACT, VUE, NODE, NEXT, NUXT, Angular, JAVA, Springboot, JS)Back-end Architect|Back-end Developer and API expert
📊 Power BI dashboards & data analytics expert – turning data into actionable insights
📁 SharePoint solutions – collaboration, document management, and workflow automation
👨💻 Game development: Unreal, Unity, Roblox, Video Game, Mobile Game, Console Game, Desktop Game.
⌛️ 8 years of dominating the market
💬 Don't settle for mediocrity if you can partner with us and experience the ultimate in software development.
I am a Highly adaptable Mobile App, Full stack Web professional who embraces satisfying customers by developing excellent applications and tracking projects' status until successful completion, I Have delivered more than 150+ Mobile apps and Websites Live to Clients, I can provide references as well.
What to Expect?
***************
+Solutions that you won't need to fix after the project is finished.
+Excellent quality
+Great communication
+Quick turnaround.
* 8+ years of extensive and solid programming and software development.
* A quick learner, able to absorb new material with ease.
* Smart, dependable, very organized, detail-oriented, high integrity, and high energy.
* Self-starter and ability to navigate projects with limited supervision.
* Finding interesting and brilliant solutions to problems.
At every project stage, I ask myself only 3 questions:
1. Will it bring value to the Customers?
2. Is the process worth the result?
3. Are we happy doing this?
**Still not convinced? A bit more about me:**
A programmer and an entrepreneur. Endlessly curious and in love with anything tech. Visionary tendencies but not without critical examination.
I like spending my creative powers on meaningful projects which are solving world problems. Always striving to be the best version of myself. I am at my best when solving problems under a time constraint.
Regards,
Manish
Manish K.
has worked
.
$14/hr
100%
Job Success
Available now
Offers consultations
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💡 Got an App Idea? I’ll Bring It to Life with Flutter Magic! | 𝟕+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐌𝐨𝐛𝐢𝐥𝐞 𝐌𝐚𝐬𝐭𝐞𝐫𝐲 | Trusted by Startups & Enterprises | DM Me Now!
Are you looking for a reliable 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 or 𝐌𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 who can deliver a high-quality, scalable mobile app on time and within budget?
With 7+ years of experience and 50+ successful app launches, I help startups, SMEs, and enterprises in the USA, Australia, UK, UAE and beyond turn their ideas into beautiful, high-performing mobile applications - ready for market and growth.
🎯 What I Can Deliver for You:
• Custom Flutter App Development for Android & iOS
• Modern UI/UX with smooth animations and pixel-perfect design
• MVP Development for Startups (from idea validation to launch)
• Complex API Integrations (REST, GraphQL, Firebase, Supabase)
• State Management Expertise (Provider, Riverpod, Bloc, GetX)
• Real-Time Features: Chat apps, video calls, notifications
• Geolocation, Maps, and GPS Tracking Apps
• Payment Gateway Integrations (Stripe, Razorpay, PayPal)
• App Store & Play Store Submission (Full process handled)
• Backend Development: Firebase, Node.js, Laravel, AWS
• CI/CD Pipeline Setup for faster, reliable deployments
• Languages & Frameworks: Dart, Flutter, Java, Kotlin, Swift, Objective-C
• State Management: Bloc, Cubit, Riverpod, Provider, GetX
• Database & Backend: Firestore, SQLite, Hive, Isar, Supabase, Firebase Realtime DB
• APIs: REST API, GraphQL, JSON Parsing
• Other Tools: Git, GitHub, GitLab, Android Studio, VS Code, Postman, Figma
🔥 Why Clients Choose Me:
• Proven Track Record: 50+ apps across finance, healthcare, logistics, social media, and e-commerce industries
• Scalable Architecture: Apps built for growth, not just MVPs
• Business-Focused Approach: I align technical solutions with your business goals
• On-Time Delivery: 100% commitment to deadlines
• Clear & Responsive Communication: No guesswork, no delays
📱 Industry Experience
• E-Commerce & Marketplace Apps
• Healthcare & Telemedicine Apps
• Fitness & Wellness Apps
• FinTech & Digital Banking Apps
• Accounting & Invoice Management Apps
• EdTech & E-Learning Platforms
• Food Delivery & Restaurant Apps
• Grocery Delivery Apps
• Travel & Tourism Apps
• Hotel & Vacation Booking Apps
• Real Estate & Property Apps
• Rental & Car Sharing Apps
• Logistics & Fleet Management Apps
• GPS Tracking & Navigation Apps
• Transportation & Taxi Booking Apps
• Social Networking Apps
• Dating & Matchmaking Apps
• Messaging & Chat Applications
• Live Streaming Platforms
• Video Calling Applications
• Home Services Applications
• Music & Audio Streaming Apps
• Podcast Applications
• OTT & Video Streaming Platforms
• Gaming & Esports Apps
• Sports & Fantasy Sports Apps
• Event Management Apps
• Ticket Booking Applications
• CRM & Business Management Apps
• ERP Solutions
• HRMS & Employee Management Apps
• Project Management Apps
• SaaS Platforms
• AI-Powered Applications
• Generative AI & Chatbot Apps
• Productivity & Automation Apps
• Task Management Apps
• Note Taking & Knowledge Management Apps
• Dream Journal & Mental Wellness Apps
• Meditation & Mindfulness Apps
• Healthcare Monitoring Apps
• Pharmacy & Medicine Delivery Apps
• Doctor Appointment Booking Apps
• Subscription Based Applications
• Investment & Trading Platforms
• Babysitter & Caregiver Platforms
• Pet Care Applications
🧩 Tech Stack Expertise:
Flutter, Dart, Flutter App Development, Cross-Platform App, Flutter Firebase, Android Studio, Kotlin, Swift, Google Maps Integration, Payment Gateway, In-App Purchases, State Management (Bloc, Riverpod, Provider), REST API, GraphQL, Firebase Auth, Clean Architecture, App Deployment, App Maintenance, App Optimization, Flutter UI Kit, Real-Time Chat App, CI/CD Flutter, Flutter MVP, Flutter Testing, FCM Notifications, Flutter Animations, App Performance Tuning, Flutter Debugging, Flutter Widgets, Custom UI Flutter, MVP Development, Minimum Viable Product, Startup MVP, MVP App Development, MVP for Startups, Build MVP App, MVP Mobile App, MVP Software Development, MVP Web App, Rapid MVP Development, MVP Development Expert, MVP Developer Flutter, MVP Launch, MVP Product Design, MVP App Design, Flutter MVP Developer, Idea to MVP, Prototype to MVP, Lean Startup Development, Agile MVP Development, Product-Market Fit, User-Centered MVP, Proof of Concept App, Wireframe to MVP, MVP Planning & Strategy, MVP Roadmap, MVP Feature Prioritization, MVP Iteration Cycle, Scalable MVP Solution, Fast MVP Delivery, Cost-Effective MVP, Validated MVP Launch, Market-Ready MVP, Investor-Ready MVP, Functional MVP App, MVP with Core Features, MVP Testing & Feedback Loop
📩 Let’s Collaborate!
Whether you're a startup building an MVP or an enterprise scaling an existing solution — I’m here to build reliable, beautiful, and scalable apps with Flutter.
🚀 AI App Developer | Flutter Developer | Native Android | Native iOS | Scalable Mobile Apps | MVP
Praful K.
has worked
.
$30/hr
100%
Job Success
Available now
Start of list.
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Hi, I'm Jaydeep – a Top Rated Plus Web & Mobile App Developer for over 9 years of experience building high-performance mobile applications.
I specialise in building iOS and Android mobile and web apps using modern hybrid frameworks such as:
• Ionic + Capacitor
• Cordova
• React Native
• React
• Angular
• Next.js
• Vue
Over the past 9+ years I have helped startups and businesses build scalable mobile and web apps used by thousands of users.
My expertise includes:
✔ Mobile app development (iOS & Android)
✔ Converting web apps into mobile apps
✔ Pixel-perfect UI implementation
✔ Firebase / Firestore integration
✔ Push notifications (Firebase / OneSignal)
✔ Google Maps & location services
✔ REST API integrations
✔ App Store & Google Play deployment
Why clients hire me:
• Top Rated Plus freelancer
• 100% Job Success
• 7600+ hours worked
• 70+ completed projects
If you need a reliable developer to build or improve your mobile and web application, feel free to invite me to your project.
Jaydeep D.
has worked
.
$16.5/hr
100%
Job Success
Available now
Offers consultations
Start of list.
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🥇 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 | 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 | 𝟭𝟮+ 𝗬𝗲𝗮𝗿𝘀
I build high-performance 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲, 𝗠𝗼𝗯𝗶𝗹𝗲, and 𝗪𝗲𝗯 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 that are scalable, secure, and production-ready.
While I specialize in 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲, 𝗕𝗟𝗘, and 𝗣𝗮𝘁𝗶𝗲𝗻𝘁 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴 𝗦𝘆𝘀𝘁𝗲𝗺𝘀, I also build complete end-to-end digital products including 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲, 𝗙𝗶𝗻𝘁𝗲𝗰𝗵, 𝗖𝗵𝗮𝘁 𝗔𝗽𝗽𝘀, and 𝗦𝗮𝗮𝗦 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀.
𝗠𝗢𝗕𝗜𝗟𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘
✔ 𝗡𝗮𝘁𝗶𝘃𝗲 𝗶𝗢𝗦 (Swift, SwiftUI, Objective-C)
✔ 𝗡𝗮𝘁𝗶𝘃𝗲 𝗔𝗻𝗱𝗿𝗼𝗶𝗱 (Kotlin, Java, Jetpack Compose)
✔ 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 (Dart, BLoC, Provider, Riverpod)
✔ 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 (JavaScript, Expo, Redux)
𝗪𝗘𝗕 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘
✔ 𝗠𝗘𝗥𝗡 Stack (MongoDB, Express, React, Node.js)
✔ 𝗣𝗛𝗣 𝗟𝗮𝗿𝗮𝘃𝗲𝗹 (Backend APIs & Enterprise Systems)
✔ REST APIs, Microservices & Cloud Architecture
𝗛𝗘𝗔𝗟𝗧𝗛𝗖𝗔𝗥𝗘 𝗦𝗣𝗘𝗖𝗜𝗔𝗟𝗜𝗧𝗬
✔ 𝗘𝗖𝗚 Monitoring Applications
✔ 𝗕𝗹𝗼𝗼𝗱 𝗣𝗿𝗲𝘀𝘀𝘂𝗿𝗲 Apps
✔ 𝗦𝗽𝗢𝟮 (Pulse Oximeter) Apps
✔ 𝗚𝗹𝘂𝗰𝗼𝘀𝗲 Meter Apps
✔ 𝗛𝗯𝗔𝟭𝗰 Monitoring Apps
✔ 𝗪𝗲𝗶𝗴𝗵𝘁 Scale Integration Apps
✔ 𝗦𝗹𝗲𝗲𝗽 𝗔𝗽𝗻𝗲𝗮 Systems
✔ 𝗥𝗲𝗺𝗼𝘁𝗲 Patient Monitoring
✔ 𝗧𝗲𝗹𝗲𝗺𝗲𝗱𝗶𝗰𝗶𝗻𝗲 Platforms
✔ 𝗕𝗟𝗘 / IoT Device Integration
𝗢𝗧𝗛𝗘𝗥 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘
✔ 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 Platforms (Shop, Order, Delivery Systems)
✔ 𝗙𝗶𝗻𝘁𝗲𝗰𝗵 & Payment Apps (Stripe, PayPal, Wallet Systems)
✔ 𝗖𝗵𝗮𝘁 & Real-Time Messaging Apps (Socket, Firebase, XMPP)
✔ 𝗦𝗮𝗮𝗦 Applications & Admin Panels
✔ 𝗟𝗶𝘃𝗲 Streaming & Social Apps
✔ 𝗚𝗣𝗦 Tracking & Delivery Apps
𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗛𝗜𝗥𝗘 𝗠𝗘
✔ 100% Job Success
✔ Top Rated Freelancer
✔ 12+ Years Experience
✔ Strong Healthcare Domain Expertise
✔ Clean, scalable & production-ready code
✔ Fast communication & transparent updates
✔ Dedicated QA process before delivery
✔ Long-term partnership mindset
If you're looking for a developer for 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 apps, 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 platforms, 𝗙𝗶𝗻𝘁𝗲𝗰𝗵 solutions, 𝗖𝗵𝗮𝘁 apps, 𝗜𝗢𝗦, 𝗔𝗻𝗱𝗿𝗼𝗶𝗱, MERN, OR Laravel systems, I can help you build a scalable and production-ready product from idea to launch.
📩 𝗙𝗲𝗲𝗹 𝗳𝗿𝗲𝗲 𝘁𝗼 𝗰𝗼𝗻𝘁𝗮𝗰𝘁 𝗺𝗲 — 𝗹𝗲𝘁'𝘀 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗶𝗺𝗽𝗮𝗰𝘁𝗳𝘂𝗹 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿.
— — — — — — —
Mobile App Development | iOS App Development | Android App Development | Flutter Development | Cross-Platform App Development | Custom Mobile Applications | MVP Development | SaaS Development
Expertise in:
Healthcare Apps, Telemedicine Apps, Remote Patient Monitoring Apps, Medical Device Integration Apps, E-Learning Apps, EdTech Platforms, Dating Apps, Food Delivery Apps, Grocery Delivery Apps, Taxi Booking Apps, Ride Sharing Apps, Fitness Apps, Wellness & Meditation Apps, FinTech Apps, Social Media Apps, Messaging Apps, Chat Applications, E-commerce Apps, Marketplace Apps, Real Estate Apps
Mobile Technologies :
Swift, SwiftUI, Objective-C, Kotlin, Java, Jetpack Compose, Flutter (Dart), React Native (JavaScript)
Web & Full Stack Development :
React.js, Next.js, Node.js, Express.js, NestJS, Laravel, Django, FastAPI, Python, PHP, MERN Stack Development
Database & Backend :
PostgreSQL, MySQL, MongoDB, Firebase, Firestore, Supabase, SQLite
Healthcare & Medical Integrations :
Apple HealthKit, Google Health Connect, ECG Monitors, Blood Pressure Monitors, Glucose Meters, SPO2 Meters, Weight Scales, HBA1C Meters, BLE Medical Devices, Remote Health Monitoring Systems
Cloud & DevOps :
AWS, Docker, CI/CD, GitHub
API & Integrations :
REST API, GraphQL, Socket. IO, WebRTC, Twilio, Agora, OAuth, JWT
Payments Integration & Subscriptions :
Stripe, PayPal, Apple Pay, Google Pay, RevenueCat, In-App Purchases, Subscription Systems
Maps & Location Services :
Google Maps, Apple MapKit, GPS Tracking, Geolocation, Route Optimization
AI & Automation :
AI App Development, AI Integration, AI Chatbots, AI Agents, OpenAI, ChatGPT, GPT-4, GPT-4o, GPT-5, Claude, Gemini, LLaMA, DeepSeek, LangChain, RAG, LLM Applications, NLP, Machine Learning, TensorFlow, PyTorch, Hugging Face, Embeddings, Vector Databases
Additional Expertise :
Push Notifications (FCM), QR Code Solutions, NFC, Apple HealthKit, Custom Software Development, Full Stack Development, Scalable SaaS Products
Dharmeshkumar G.
has worked
.
$75/hr
88%
Job Success
$100K+ earned
Start of list.
End of list.
I build production AI systems and full-stack products that ship. Multi-agent automation, React and Next.js front ends, Node.js and NestJS back ends, and Flutter mobile apps, delivered end to end for startups.
Most developers can write code. Fewer can take a vague idea, architect it properly, and hand a founder a working product that does not fall apart in three months. That is the gap I close.
What I do:
AI and automation. I design multi-agent systems and LLM-driven workflows that run real operations, not demos. Agent orchestration, automation pipelines, and AI features wired directly into the apps clients actually use.
Full-stack web. React, Next.js, TypeScript on the front end. Node.js and NestJS on the back end. REST and GraphQL APIs, relational and document databases, CI/CD pipelines built for teams that need to move fast without breaking things.
Cross-platform mobile. Flutter and Dart for one codebase that ships to both iOS and Android with near-native performance and consistent UI.
How I work. Clean Architecture, Domain-Driven Design, and SOLID on every engagement, so what I build stays maintainable long after I hand it over. Clients consistently mention three things in reviews: I am fast, the work is genuinely good, and the communication is clear from day one.
Recent work includes shipping a travel app MVP end to end, a long-term Flutter wellness platform, a sports investment platform, and a production Firebase backend with complex server-side security rules.
If you are a founder who needs someone to own the technical side and ship, not just take tickets, send me a message and tell me what you are building.
Elijah Sylejman L.
has worked
.
$15/hr
100%
Job Success
$100K+ earned
Available now
Start of list.
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I help startups and growing businesses build scalable, AI-powered iOS and Android applications that drive engagement, retention, and long term product growth.
With 10+ years of experience in React Native and cross platform mobile development, I build production grade mobile products that balance speed, performance, and maintainability from MVP launches to large scale applications.
My approach combines strong engineering fundamentals with AI assisted development workflows to reduce time to market without compromising code quality.
What I Deliver
• AI-powered mobile applications for iOS & Android
• Real time chat, engagement, and interactive experiences
• Subscription and monetization ready mobile products
• Enterprise and internal business applications
• Kiosk and tablet first experiences
• High performance consumer apps
• Rapid MVP development and low code validation workflows
Mobile & Architecture Expertise
✓ React Native (CLI & Expo), TypeScript
✓ Redux Toolkit, Thunk, MobX
✓ REST & GraphQL APIs
✓ Firebase (Auth, Firestore, Cloud Functions, FCM, Crashlytics)
✓ Stripe, PayPal, Apple Pay, In App Purchases
✓ CI/CD – Bitrise, CircleCI, Fastlane
✓ Testing – Jest, React Native Testing Library, Appium
✓ Secure Architecture – OAuth 2.0, JWT, SSL, end to end security
✓ App Store & Play Store deployment and compliance
AI & Intelligent Systems
• AI chatbots and conversational experiences
• Recommendation engines and predictive workflows
• On device ML with TensorFlow Lite
• Hugging Face model integration
• NLP and intelligent content processing
• AI driven automation and decision systems
AI-Assisted Development Stack
GitHub Copilot • Cursor • Tabnine • Bubble • Lovable • Base44 • Webflow • Replit
Why Clients Hire Me
✔ 50+ mobile applications delivered across industries
✔ Faster launch cycles through structured delivery systems
✔ Performance-focused architecture for scale and reliability
✔ Clean, maintainable code built for long term growth
✔ Strong communication and long term partnership mindset
If you are building a mobile product that requires AI capabilities, scalable architecture, and execution that can move from concept to launch efficiently, let’s build something users keep coming back to.
Megha J.
has worked
.
Associated with
Infowind Technologies (IT) Pvt. Ltd.
$500K+
earned
$25/hr
98%
Job Success
$100K+ earned
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I work with enterprises and product companies to design and build stable, scalable, and maintainable mobile platforms using Flutter, backed by clean architecture, SDK-first design, and production-ready AI integrations.
With 6,000+ hours on Upwork, $100K+ in enterprise engagements, and Top Rated Plus status, I focus on long-term mobile systems. My role often extends beyond coding into technical architecture, platform strategy, and risk mitigation for mobile products used by thousands of users.
How I work :
• Design SDK-first mobile architectures where business logic, APIs, and AI capabilities live in versioned, reusable modules
• Build Flutter applications that integrate cleanly with existing enterprise backends and internal systems
• Ensure backward compatibility, upgrade paths, and controlled releases
• Collaborate with product managers, backend teams, and QA to align mobile delivery with enterprise standards
Core Expertise:
• Enterprise Flutter App Development (iOS & Android, single codebase)
• Mobile SDK & Plugin Development (Flutter SDKs, internal platforms, API wrappers)
• AI Integration at Platform Level (OpenAI, intelligent workflows, automation)
• Modular & Clean Architecture (scalable, testable, maintainable)
• Backend Integration (Firebase, Supabase, REST, GraphQL, internal APIs)
• Authentication, Payments, Subscriptions & Access Control
• Performance Optimization & Reliability
• Testing Strategy, QA Coordination & Release Management
• App Store & Play Store Enterprise Deployment
AI for Enterprise Mobile Products
I implement controlled, production-grade AI, embedded at the platform or SDK layer — enabling features such as automated assistance, intelligent recommendations, guided workflows, and analytics-driven user experiences. All AI integrations are designed with cost management, latency control, and data boundaries in mind.
If your organization needs a senior Flutter architect who understands enterprise constraints, scalability, and long-term ownership, I’m open to structured engagements and contract-to-hire discussions.
Associated with
Zehntech Technologies
$800K+
earned
$30/hr
100%
Job Success
Available now
Offers consultations
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⭐100% Job Success | $400k+ earned on Upwork
⭐Clean, scalable, and production-ready code
⭐12+ years in iOS and Android Development & published 50+ award winning apps
⭐Reliable communication and long-term support
⭐Fast iteration using AI-assisted development workflows
⭐Successfully launched and maintained production apps
With 14+ years of experience and 30+ published apps, I expertise in native iOS applications built with Swift, SwiftUI, UIKit, and Objective-C. I’ve worked with startups and growing companies to launch, maintain, and scale mobile products with strong performance, clean architecture, and polished user experience. AI-powered developer, using the latest tools in my own workflow, so projects move faster and the quality stays high.
⭐Mobile Technologies: iOS, Android, Swift, SwiftUI, UIKit, Kotlin, Flutter, React Native, Dart, Kotlin (Android Basics), iOS Native Bridging, React Native SDK Development
⭐Architecture & State Management: MVC, MVVM, Flutter Bloc, Riverpod, GetX, Clean Architecture
⭐Backend & Cloud: Firebase, Firebase Functions, Cloud Firestore, Firebase Storage, Supabase, PostgreSQL, Google Cloud Platform (GCP), Backend & Integrations: Firebase Authentication, Firestore, Firebase Storage, Cloud Functions, Payment Integrations,
⭐Third-Party APIs Tools: Xcode, Android Studio, VS Code, Postman, Figma, App Store Connect, Google Play Console Core Competencies: API Integration, UI Implementation, Performance Optimization, Debugging, App Deployment, Code Reviews
⭐Mobile Engineering: Performance Optimization, Multithreading & Isolates, Offline Data Management, REST APIs, Push Notifications, In-App Purchases (IAP), Subscription Systems, App Publishing
⭐Databases & Storage: PostgreSQL, Supabase, Hive, ObjectBox, Shared Preferences
⭐Tools & Practices: Git, Agile/Scrum, SDK Development, Technical Documentation, Code Reviews
Worked in different industries like Booking, Health & Fitness, Education, E-commerce, Social Apps, Music, Restaurant Management, Booking Platforms, Healthcare, Fintech and many others. STARRYAI, HOLIDAYSWAP, AI GRAMMAR CHECKER FOR ENGLISH are some of the best examples, that I've worked with complete Agile using Flutter, Flutter Flow, React Native, and Twilio. STARRYAI is an AI-powered image generation platform, HOLIDAYSWAP is a travel and home-exchange marketplace for affordable accommodation, and AI GRAMMAR CHECKER FOR ENGLISH is an AI-based writing assistant for grammar correction and English language improvement.
I am ready to assist your startup, founder, or business in developing ideas into great iOS applications using modern Apple tools and industry standards. If you need an MVP developed or you need your existing application upgraded, I am here to make sure that your product becomes a hit. Apart from standard mobile applications, I have delivered applications which included AI-based functionality, recommendations system, subscription model, payment integration, real-time communication, advanced backend integrations, and enterprise-scale solutions.
Looking For A Sr. Mobile App Developer (Android / iOS) who can help bring your app idea to life with a clear plan and honest feedback with technical guidance throughout the development process. Let’s kickstart, I’ll go over your idea in detail over a video call or through Upwork chat!
Muhammad Junaid B.
has worked
.
Associated with
Tiksom Limited