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Ukraine
$40/hr
100%
Job Success
$7K+ earned
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Detail oriented software engineer with passion for programming. Effective in both team and individual work with good communication and
cooperation skills. Сonstantly striving to learn new technologies and look for ways to better myself in this rapidly changing industry.
Associated with
SYSMETICA, LLС
United Arab Emirates
$30/hr
90%
Job Success
$10K+ earned
Available now
Offers consultations
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Got an idea you want to turn into a real product? Let's talk.
I help non-technical founders and business owners build AI-powered MVPs, SaaS platforms and Mobile Apps (iOS & Android) from first concept to a live, working product. Based in Dubai, UAE, I work with clients across the US, UK and the Middle East who need someone they can trust to own the technical side of their project, so they can focus on their business.
What makes me different:
I'm not just a developer who writes code and disappears. I ask the right questions, give honest feedback on your idea and stay with you through the full journey from scoping to launch.
✅ WHAT I DELIVER
✔️ AI-Powered Web Apps & SaaS Platforms:
Multi-tenant SaaS products with AI automation, smart dashboards, role-based access, subscription billing and third-party integrations. I integrate OpenAI and LLM APIs to give your product intelligent features, automated data extraction, AI-driven notifications, smart document processing and decision-support tools.
✔️ MVP Development:
Got an idea? I help you scope it down to the essentials, build the first working version fast, and get it in front of real users. No bloated features. No wasted budget. Just a lean product that validates your idea.
✔️ Mobile Apps (iOS & Android):
Cross-platform mobile apps built with Flutter and React Native from ride-hailing platforms to B2B tools and on-demand services. Clean UI, real-time features, and full App Store / Play Store deployment included.
✔️ Web Application Development:
Full-stack web apps built on React, Node.js, Laravel, and Python/Django. Scalable from day one so you don't need a costly rewrite six months after launch.
✔️ AI Feature Integration:
Already have a product and want to make it smarter? I add AI capabilities to existing platforms, document automation, intelligent alerts, chatbots, workflow automation and LLM-powered features using OpenAI API.
✔️ Dashboards & Admin Panels:
Real-time analytics dashboards, role-based admin tools and reporting panels that turn raw data into decisions your team can act on.
🛠️ TECH STACK
Mobile:
Flutter, React Native, iOS, Android
Frontend:
React.js, Next.js, Tailwind CSS
Backend:
Node.js, Laravel, Python, Django, REST APIs
AI:
OpenAI API, LLM Integration, AI Document Processing
Database & Cloud:
PostgreSQL, MySQL, MongoDB, Firebase, AWS
Payments:
Stripe, PayPal, In-App Subscriptions
HOW I WORK:
I respond fast, communicate in plain English and I'll always tell you the truth about scope, timeline, and budget before it becomes a problem, not after. I take on a limited number of projects at a time so every client gets proper attention, not just a ticket in a queue.
If something changes during the build, you'll know immediately. No surprises at the finish line.
I WORK BEST WITH:
- Non-technical founders building their first SaaS or mobile product.
- Businesses that need an AI layer added to an existing platform.
- Startups that want one reliable person to own the full technical delivery.
- Companies with a legacy or broken app that needs a proper rebuild.
- Entrepreneurs in the UAE, US or UK who want a partner not just a contractor.
LET'S START WITH A CONVERSATION:
Message me with a short description of what you're building. I'll get back to you within a few hours with honest thoughts on your idea, a rough scope and whether I'm the right fit for it.
No pressure. No pitch. Just a real conversation.
KEYWORDS:
MVP Development, Startup MVP, AI-Powered SaaS, Full Stack Development, Cross-Platform App Development, iOS & Android, Flutter, React Native, App Store & Play Store Deployment, Real-Time Features, Push Notifications
Web:
React.js, Next.js, Node.js, Laravel, Python, Django, REST APIs, API Integration, Multi-Tenant SaaS, Stripe Integration
AI:
ChatGPT Integration, OpenAI API, LLM Integration, AI Automation, AI Chatbot Development, AI Document Processing, Generative AI, AI Workflow Automation
Database & Cloud:
PostgreSQL, MySQL, MongoDB, Firebase, AWS, Docker
UI/UX:
Responsive Design, Clean UI, Admin Dashboards, Real-Time Analytics
Working style:
Agile, Sprint-based delivery, Clear communication, UAE-based
Rashid M.
has worked
.
$16/hr
100%
Job Success
$300K+ earned
Available now
Start of list.
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Are you looking for a Mobile app developer who can design and develop your app for the next millions of users?
ARE YOU
- Looking for a mobile app development service starting from the design, development to release and publish a mobile app to Play Store and App Store for mobile app users/customers.
- Looking for a mobile app developer who can integrate new features into your existing Android app, iOS app or Flutter app based projects?
- Individual | Big company | Startup who wants to build and create Android app or iOS app from scratch?
- Looking for a mobile app developer who can transform your idea into reality?
- Someone who invests in the best so you get better results?
If any of that is what you need, message me and I am here to help you.
Who am I?
- I'm Sagarkumar Surani, a Senior Mobile App Developer with 10+ years of experience and a Master’s degree in Computer Science and Engineering.
- I worked with big brands, startups and individuals to create mobile apps for their requirements. My work also got featured a few times in the market store. Apps developed by me have 100 million+ downloads on store and users love to keep the app on their phone as a permanent app.
- I’ve worked with clients from over 40 countries, such as the USA, UK, Germany, India, and Australia, which has given me a strong understanding of different international markets. My experience covers a variety of industries, including Travel and Tourism, train ticket booking, transport, educational, hospitality, health & wellness, real estate, live streaming, Marketplace, food & delivery, human resources, fitness, financial & banking sectors, e-commerce, dating, sports, Betting, music/audio, and automotive.
I specialize in these high-quality Mobile App Design and Development areas:
- Android app development
- Kotlin, Java, Android SDK, Android Studio
- iPhone app development
- Swift, SwiftUI, Objective C, iOS SDK, Xcode
- Backend Development | Node.js
- Cross Platform Mobile App Development using Flutter, Dart
- UI/UX: Mobile design
- Mobile & Web app design
- UX/UI design
- Landing page design
Skills :
- Have experience developing, releasing & maintaining applications as a Mobile app developer
- Strong skills in executing pixel & animation perfect UI's relative to good app performance
- Have great communication skills and ability to work with your team
- Have a great understanding of MVC, MVP, MVVM and take great care to ensure each project is well-architecture with best practices and easily maintainable so it can be enhanced as feature grows.
- The ability to take initiative and work independently with very little supervision
- Application requirement analysis
- Translating requirements to technical languages
In addition to Mobile app development services, my topic areas of expertise include:
- Mobile Application Architect
- Native Mobile Application Development consultation
- Mobile Application UI/UX design using Figma, Adobe XD
- Mobile Application backend services Firebase, AWS Mobile Hub
- Mobile Application backend development: Node, Express, TypeScript, JavaScript, MongoDB, MySQL, PHP, RESTful API development, Google App Engine
- Website development, Web Scraping, Web Admin Panel, CMS Development
- Chatbot development, Facebook Messenger
If you still think this is right for you, contact me.
Thank you in advance for your time and consideration.
Kind Regards
Sagarkumar Surani
P.S.
- When you work with me your satisfaction is 100% guaranteed.
- Every person who ever worked with me got results. EVER!
- Even if you don’t hire me now, keep my profile link in case you need a Mobile App Developer later.
FAQ
Q: Can you provide maintenance support after development?
A: Yes, I provide free of cost maintenance support for 12 months after mobile app development.
Q: Can you help with Mobile app design?
A: Yes, I offer a Mobile app UX design as an additional service.
Q: Can you help with the landing page website for my mobile app product?
A: Yes, I can help to build the landing page for a mobile app product.
Warmly,
Sagarkumar Surani
-----------------------------------------------------
Native Android App Developer, iOS App Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, Hire Best MERN Stack Developer, RESTful API Developer, API Integration, Frontend Developer, React.js, Backend Developer, Nodejs, Javascript, Figma, UI/UX Design, Prototype, In-app purchases, Location, Payment Gateway Integration, Apple Xcode, Android Studio, Push notifications, User authentication, User profile creation, QA, Unit Testing, Regression Testing, Dating App, Ecommerce App, RevenueCat, Adapty, 3rd Party SDK Integration, SQLite, MySQL, Firebase Cloud Firestore, Realtime Database, Kotlin, Swift, Java, Dart, SwiftUI, Twilio, Mapbox, HealthKit, Google Analytics, Amazon Web Services, DigitalOcean, Core Data, UIKit, MapKit, Phone, Full Stack Developer, iPad, OpenAI ChatGPT LLM, ChatGPT API Integration
.
Sagarkumar S.
has worked
.
$25/hr
100%
Job Success
$60K+ earned
Start of list.
End of list.
🏆TOP RATED UPWORK TALENT
🌟 🌟 Responsive communication
🌟 🌟 Full time Dedication
🌟 🌟 Post-development maintenance
I’m a Full stack mobile app developer. I have worked in IT Industry for over 5 years. I developed dozens of web & mobile applications over the time.
Technologies I am adept in :-
❇️ Native iOS: Swift, SwiftUI
❇️ Native Android: Kotlin, Java
❇️ Bubble.io
❇️ MVVM/ MVC
❇️ Google map api, InApp billing, Facebook API, Twitter API, Instagram API, Youtube API
❇️ MySQL/MongoDB
❇️ Payment Integration: PayPal, Stripe, Braintree
❇️ Javascript / Typescript
My Development Area :
✅ E-Commerce Apps
✅ Camera Apps
✅Health / Fitness app/ Education
✅ Location based Apps , Google Maps integration
✅ Bar code/QR code Scanner Apps.
✅ iBeacon, BLE app
✅ Social Networking app, Social Dating app, Instant Messaging app
✅ Social Logins Integration such as Facebook, Twitter, Google+, YouTube, Instagram, LinkedIn, etc.
✅ Push Notification Integration using One Signal, Firebase, etc,
✅ Payment Gateway integration: Stripe, PPSDK and In-App Purchase, etc.
I follow following development processes & tools ::
🌟 Git/Bitbucket - commit/push/pull /branches
🌟 Environments – dev/staging/production
🌟 Android Studio/ xcode/ IDE
🌟 Agile/Scrum methodology
🌟 JIRA, Trello, Teamwork, Asana, Basecamp, Zoho, Redmine
Availability and Communication :
----------------------------------------------
- I am available to work 40hrs/week dedicatedly on your project
- My response time is very fast , available 18hrs a day.
- Daily stand up meetings, update email, weekly demo of the project progress
- I strongly follow NDA terms
- Inhouse testing with multiple android and iOS devices
I believe that transparent communication and flexibility are the key elements for making a successful collaboration. So, I make sure that my clients stay updated about the development process.
Assure 100% satisfactions.
Thanks
Associated with
MindCrew Technologies Pvt Ltd
$20/hr
$200 earned
Available now
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Are you looking for a Senior iOS Developer who can build modern, reliable apps—and also clean up messy codebases? 👋🛠️
I’m Edson Salmeron, a Computer Engineer and iOS developer with 11+ years working with Swift / Objective-C (including 6 years professional + 5 years freelance).
I specialize in scalable iOS architecture (MVP / MVVM / VIPER), Combine, RESTful API integrations, and real-time features (WebSockets)—with a strong focus on performance, stability, and maintainability.
Currently, I work as a Senior iOS Developer at Apptegy, contributing to large production apps where I build features, maintain custom libraries, and integrate design systems.
⚡ What I can do for you?
Build iOS apps using SwiftUI / UIKit with clean, scalable architecture
Integrate REST APIs, real-time updates (WebSockets), and third-party SDKs
Refactor and improve existing apps (architecture, performance, crashes, memory, UI issues)
Work with SPM and CocoaPods dependency management
Bonus: projects involving SceneKit / 3D content when needed
✅ Why work with me?
Clean, maintainable, and scalable code
Strong communication and practical solutions
UI/UX mindset: smooth, polished user experiences
Reliable long-term support and maintenance after delivery
📩 Let’s build (or improve) your iOS app. Click Invite and tell me what you’re working on—I'll suggest the best approach and next steps.
Edson S.
has worked
.
$20/hr
100%
Job Success
$7K+ earned
Start of list.
End of list.
Your Vision Pro app idea deserves more than a generic developer. It needs someone who lives and breathes ARKit, RealityKit, and visionOS, and has shipped real apps to prove it.
With 5+ years of iOS development experience and a laser focus on AR/VR and spatial computing, I help startups, enterprises, and product teams build immersive Apple platform apps that actually work in the real world, not just in demos.
What I build for clients:
✅ ARKit & RealityKit apps for iPhone and iPad (iOS 16, 17, 18)
✅ Apple Vision Pro / visionOS immersive experiences and spatial computing apps
✅ 3D product visualization and AR try-before-you-buy apps for e-commerce and retail
✅ Interior design and real estate AR apps with room scanning and furniture placement
✅ SwiftUI-based apps with MVVM architecture, Combine, and clean scalable code
✅ Unity + iOS AR integrations and cross-platform AR pipelines
✅ Enterprise training simulations and e-learning AR modules
✅ Custom 3D animations, lighting, physics, and real-world object tracking
Industries I've shipped apps for:
Retail & E-commerce · Real Estate & Interior Design · Enterprise Training · E-learning · Entertainment & Gaming · Healthcare Visualization
Why clients keep coming back:
I write clean, documented, and scalable code using MVVM and modern Apple frameworks, so your app is easy to maintain and extend long after launch. I stay current with every WWDC release, which means your product is always built on Apple's latest APIs, not deprecated workarounds.
You get fast response times, milestone-based updates, and zero guesswork on project status. I work on a milestone-based model, so you only pay for delivered, tested results.
Tech stack:
ARKit · RealityKit · SceneKit · SwiftUI · UIKit · visionOS · Xcode · Core ML · Metal · Unity AR Foundation · REST APIs · Firebase · Git
I take on 2–3 new projects per month to ensure every client gets my full attention. If your timeline fits, send me a message, I typically respond within 2 hours.
Ali R.
has worked
.
$50/hr
100%
Job Success
$7K earned
Available now
Start of list.
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Hi there! 👋 I’m a Full-Stack Mobile App Developer helping startups, founders, and businesses turn app ideas into clean, scalable, and launch-ready products.
𝐈 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐢𝐧 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬, 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐚𝐩𝐩𝐬, 𝐌𝐕𝐏𝐬, 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐰𝐞𝐛 𝐚𝐩𝐩𝐬, 𝐝𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬, 𝐚𝐧𝐝 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐮𝐬𝐢𝐧𝐠 𝐅𝐥𝐮𝐭𝐭𝐞𝐫, 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞, 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞, 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞, 𝐌𝐨𝐧𝐠𝐨𝐃𝐁, 𝐌𝐲𝐒𝐐𝐋, 𝐚𝐧𝐝 𝐭𝐡𝐢𝐫𝐝-𝐩𝐚𝐫𝐭𝐲 𝐀𝐏𝐈𝐬.
Whether you have a fresh app idea, an existing app that needs improvement, a messy codebase that needs cleanup, or a product that needs new features, I can help you plan and build it the right way.
⭐ 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝
✅ iOS and Android mobile apps
✅ Flutter and React Native applications
✅ MVPs for startups and founders
✅ SaaS platforms and subscription-based apps
✅ AI-powered apps, chatbots, and automation tools
✅ Web apps, dashboards, and admin panels
✅ Backend systems and API integrations
✅ Wrapper apps, WebView apps, and Base44-style app builds
✅ Payment gateways and third-party integrations
✅ App Store and Google Play deployment
⭐ 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤
✅ Mobile: Flutter, React Native, iOS, Android
✅ Frontend: React.js, Next.js, JavaScript, TypeScript
✅ Backend: Node.js, Express.js, REST APIs
✅ Databases: Firebase, Supabase, MongoDB, MySQL
✅ AI & APIs: OpenAI API, Gemini, AI chatbots, automation tools, third-party APIs
✅ Tools: Figma, GitHub, Bitbucket, Postman
✅ Deployment: Apple App Store, Google Play Store, Firebase Hosting, cloud platforms
⭐ 𝐇𝐨𝐰 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩
✅ Turn your app idea into a launch-ready MVP
✅ Build clean and scalable mobile apps for iOS and Android
✅ Create dashboards, portals, admin panels, and backend systems
✅ Add AI features, chatbots, automation, payments, and API integrations
✅ Convert Figma designs into fully functional mobile apps
✅ Fix bugs, improve performance, and clean up existing code
✅ Deploy your app to the App Store and Google Play
✅ Support your product after launch with updates and new features
🎯 𝐌𝐲 𝐏𝐫𝐨𝐜𝐞𝐬𝐬
Planning → UI/UX Review → Frontend Development → Backend Development → Testing → Deployment → Ongoing Support
🤝 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐈𝐭 𝐑𝐢𝐠𝐡𝐭
Share your app idea, requirements, or existing product details, and I’ll help you choose the right approach, build a clean solution, and launch successfully.
Sheeraz A.
has worked
.
$10/hr
100%
Job Success
Available now
Start of list.
End of list.
I’m a Senior Mobile App Developer with 13+ years of experience building high-quality iOS and Android applications—from idea to App Store and Play Store launch.
I specialize in iOS development using Swift, SwiftUI, and Objective-C, along with cross-platform development using Flutter (Dart). I help businesses and startups turn ideas into fast, scalable, and user-friendly mobile apps.
💡 What I can help you with:
• iOS App Development (Swift, SwiftUI, Objective-C)
• Cross-platform Apps (Flutter – iOS & Android)
• End-to-End App Development (Design → Development → Deployment)
• API Integration & Backend Connectivity
• Push Notifications (APNs, Firebase Cloud Messaging)
• Firebase & iCloud Integration
• In-App Purchases & Subscriptions (StoreKit)
• Local Database (Core Data, SQLite)
• Social Login (Google, Apple, Facebook)
• App Performance Optimization & Bug Fixing
• App Store & Play Store Submission (including approvals & guidelines)
🎯 Why clients choose me:
• Clean, scalable, and maintainable code
• Strong focus on performance and UX
• Reliable communication and quick turnaround
• Experience working with startups, MVPs, and enterprise apps
I don’t just build apps—I help you build products that users love.
📩 Have an idea or need help improving your app? Let’s discuss your project.
Mohit G.
has worked
.
$7/hr
80%
Job Success
$300+ earned
Start of list.
End of list.
Hi 👋 , I’m Patrick, an iOS developer with a strong foundation in Swift, SwiftUI, and Apple’s latest frameworks. I specialize in building modern, stable, and beautifully crafted iOS applications from scratch, tailored to your business goals.
Whether you’re a startup founder, product owner, or team lead, I help turn ideas into production-ready apps — from the first line of code to App Store submission.
💡 Technical Expertise
- Swift, SwiftUI, Combine, Xcode
- Core Data, Firebase, Supabase, MongoDB Realm
- AI feature integration
- REST API integration & data fetching
- MVVM architecture
- TCA architecture
- Local & push notifications
- UserDefaults & AppStorage
- AVKit for multimedia applications
- Version control with Git
🧠 How I Work
- Discover & Plan
- Understand your product goals before coding
- Define clear technical direction and timelines
- Build & Deliver
- Write clean, modular, and testable code
- Share early prototypes and optimize for performance
- Communicate & Collaborate
- Async updates with regular video check-ins
- Clear documentation and transparent decisions
- Launch & Support
- Smooth TestFlight & App Store releases
- Ongoing support, scaling, and iteration
🤝 What You Can Expect
- Fast and reliable communication
- Scalable, maintainable codebase
- Product-focused collaboration
- Availability for critical support
- Long-term partnership when needed
Patrick S.
has worked
.
$30/hr
100%
Job Success
$9K+ earned
Start of list.
End of list.
I build fast, stable, and beautifully polished mobile apps using React Native, Expo, TypeScript, Swift, Kotlin, and production-grade engineering practices. My work powers 200,000+ active users, real-time applications, AI-driven pipelines, secure payment flows, and multi-platform ecosystems across iOS, Android, Web, and even Apple Watch and Wear OS.
Clients hire me to:
• Improve performance
• Fix broken or slow apps
• Build pixel-perfect UI
• Implement secure authentication
• Create scalable architecture
• Set up CI/CD and EAS workflows
• Deliver high-quality Expo or React Native builds
• Rescue failing projects
• Build major new app features fast and reliably
My apps include consumer apps, enterprise apps, food delivery, e-commerce, real-time games, AI-powered apps, safety systems, and multi-device ecosystems.
⸻
Why clients trust me
• Delivered Delivery app in Singapore (200K+ downloads)
• Built large-scale Expo apps like Paper2Pod, Siam Cat Recycling
• Engineered high-performance game logic and UI for ChessX
• Built Apple Watch and Wear OS safety systems for Meet Leelou
• Proven success with secure auth, payments, EAS pipelines, native modules, and enterprise-grade performance tuning
I routinely improve apps by:
• Cutting CPU usage dramatically (ChessX: 30 percent to 5 percent)
• Reducing cold start times
• Fixing re-render storms and list lag
• Optimizing Skia, Reanimated, and FlashList
• Implementing airtight security and secrets management
• Hardening navigation, deep linking, and persistence logic
• Stabilizing crashes and production edge cases
La Win K.
has worked
.