Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get Full-Stack Web App Developer | React, Next.js & Node.js Expert

Hassan R.Status: Offline
Hassan R. Hassan R.
5.0
Preview imagePreview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Hassan, priced and ready to go.
Hassan R.Status: Offline
Hassan R. Hassan R.
5.0
Preview imagePreview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Hassan, priced and ready to go.

Project details

Need a complete web application built from scratch fast, scalable, and visually stunning?
I help startups, agencies, and businesses launch modern full-stack apps using React, Next.js, Node.js, MongoDB, and Shopify designed for real performance and growth.

With years of experience in custom full-stack solutions, I deliver end-to-end development with clean code, responsive UI, and conversion-focused structure.

🔧 What’s Included in This Gig:

✔️ Modern frontend using React.js / Next.js
✔️ Backend APIs with Node.js / Express
✔️ Admin panels and dashboards
✔️ Custom websites and landing pages
✔️ Shopware 6 or Shopify store setup
✔️ Scalable database design (MongoDB / MySQL)
✔️ API integrations (Stripe, Coinbase, etc.)
✔️ SEO, performance & speed optimization
✔️ Deployment (Vercel, Netlify, cPanel)
✔️ Bug fixes and maintenance

Let’s create a powerful web experience that performs, scales, and impresses — tailored for your business.
Programming Languages
PHP, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$130
Standard
$900
Advanced
$1,500
Delivery Time 5 days 10 days 20 days
Number of Revisions
UnlimitedUnlimitedUnlimited
Number of Pages
1512
Design Customization
Content Upload
Responsive Design
Source Code
-
-
Optional add-ons You can add these on the next page.
Source Code (+ 2 Days)
+$200
5.0
1 review
100% Complete
(1)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

JI

Javed I.
5.00
Dec 3, 2025
React & Node Developer Needed for Critical Data Update Bug Fix Working with Hassan Raza was a great experience. He fixed our React + Node bug quickly and explained everything clearly so we understood what went wrong. The update flow is now working perfectly and the app feels more stable than before. Communication was smooth, delivery was fast, and the solution was clean with no follow-up issues. Overall, excellent work — I’d happily hire him again for future tasks.
Hassan R.Status: Offline

About Hassan

Hassan R.Status: Offline
Mobile App Developer | Flutter & React Native | iOS & Android
5.0  (1 review)
Jaranwala, Pakistan - 4:04 pm local time
Looking for a reliable app developer who can turn your idea into a sleek, high-performing mobile app? I build fast, scalable, and beautiful Flutter & Native Android apps that combine modern design, smooth performance, and clean code built to impress users and grow your business.

Hi, I’m Hassan Raza, A passionate Full Stack Mobile Developer with 5+ years of experience delivering high-quality, performance-driven apps for clients worldwide. I specialize in Native Android (Kotlin/Java/Jetpack Compose) and Flutter, building seamless, scalable, and visually stunning mobile applications for both startups and enterprises.

At NExGEN TECH, I lead mobile and web projects from idea to deployment combining clean code practices, business-focused thinking, and next-gen technologies to build apps that don’t just work they thrive.

🎯 My Core Expertise Includes:

✅ Flutter App Development (iOS & Android from a single codebase)
✅ Native Android Development (Kotlin, Java, Jetpack Compose)
✅ App Architectures (MVVM, MVI, MVP, Clean Architecture)
✅ State Management (Bloc, GetX, Provider)
✅ Real-Time Apps using WebRTC, Firebase & Live Streaming
✅ Pixel-Perfect UI/UX with responsive design for all screen sizes
✅ RESTful APIs, Firebase, Ktor, Supabase
✅ Local/Remote Data Handling (SQLite, Room DB, Firestore)
✅ Authentication (Email, Google, OTP, Firebase Auth)
✅ Push Notifications (FCM)
✅ CI/CD & Automated Testing
✅ Google Play Store Deployment & Post-Launch Support

🛠️ Tools & Technologies I Work With:

✅Languages: Dart, Kotlin, Java
✅Frameworks: Flutter, Jetpack Compose, Ktor
✅Databases: SQLite, Room, Firestore, Realtime DB
✅Version Control: Git, GitHub, Bitbucket
✅Design Tools: Figma, Adobe XD
✅CI/CD: GitHub Actions, Bitrise
✅Testing: Unit, Widget, and Integration Testing
✅Deployment: Firebase Hosting, Google Play Store, Firebase Distribution

📱 Notable Projects:

✅Trading Signals App: Real-time alerts with Firebase backend & advanced UI/UX.
✅WebRTC Video Calling App: Custom-built real-time video solution with dynamic scaling.
✅Educational Platform: Multi-featured app with live sessions, quizzes & video courses.
✅eCommerce Solution: Firebase-powered shopping app with secure payments & admin dashboard.
✅News Aggregator: Flutter-based real-time news app with filters, bookmarking & sharing.
✅Custom Dashboards: Admin panels integrated with Flutter Web & REST APIs.

🏆 Why Work With Me:

✨ 5+ Years of Proven Mobile App Experience
✨ Clean, Maintainable & Scalable Code
✨ Strong UI/UX Focus with Responsive Design
✨ Fast Turnaround, On-Time Delivery, and Full Commitment
✨ Clear Communication & Smooth Collaboration
✨ Post-Delivery Support & Long-Term Partnership

💬 Let’s Talk!

I bring both technical excellence and business understanding to every project. Whether you’re launching an MVP, scaling your app, or modernizing your codebase, I’m here to deliver quality you can rely on.

📩 Click "Invite to Job" or send me a message — I’ll respond fast and help you get started the right way.


𝗞𝗲𝘆 𝘀𝗸𝗶𝗹𝗹𝘀: Flutter Mobile App Development, Cross-Platform Mobile App Development, iOS Flutter Mobile App Development, Android Flutter Mobile App Development, Dart Programming, React Native App Development, Swift Programming, Kotlin Programming, Java for Android, Objective-C, UI/UX Design, Figma, Material & Cupertino Design, App Store Optimization (ASO), Firebase Integration, Backend Integration, RESTful APIs, GraphQL, Push Notifications, App Performance Optimization, Version Control (Git), Agile/Scrum Methodology, Mobile App Testing, Cloud Services (AWS, GCP, Azure), AI & Automation Integration (ChatGPT, OpenAI API), Payment & Third-Party API Integration, Responsive & Adaptive Layouts, App Debugging & Maintenance, App Store & Google Play Publishing.

Steps for completing your project

After purchasing the project, send requirements so Hassan can start the project.

Delivery time starts when Hassan receives requirements from you.

Hassan works on your project following the steps below.

Revisions may occur after the delivery date.

Requirement Gathering & Discussion

Client shares project goals, references, and key features. We finalize scope, timeline, and milestones.

Design & Wireframe (if needed)

I create a layout or prototype (or use client’s design) ensuring proper structure, flow, and responsiveness.

Review the work, release payment, and leave feedback to Hassan.