If you need a React Native developer who ships reliable iOS and Android apps, not just code, you're in the right place. 🎯
I'm a senior React Native and Expo developer with 10+ years of production experience. I'm part of Toptal's vetted network (top ~3%) and the founder of Inseed, a boutique mobile development studio on Upwork. Together, we've delivered mobile and AI-powered products for companies like Carrier, National Debt Relief, Roblox, Hazel (.co), Bookvid, and YuMe, from early-stage startups to Fortune 500 teams. 🏆
My core focus is React Native and Expo, building iOS and Android apps that go through App Store and Play Store review, hold up under real user load, and stay maintainable as your product grows. I also build AI-powered features (OpenAI, LangChain, Pinecone) and React/Next.js web apps for clients who want one consistent engineering partner across platforms.
🚀 What I bring to your project:
- 10+ years building real-world production software
- 6+ years of React Native (Expo + bare workflow, App Store & Play Store releases)
- Deep AI integration: OpenAI API, LangChain, Pinecone, vector search
- TypeScript-first development with clean architecture and long-term maintainability
- Testing discipline: unit, integration, and E2E (Jest, Detox, Cypress)
- CI/CD pipelines, crash monitoring, analytics, and performance optimization
- Clear communication, early escalation, and full ownership of delivery
🛠 Tech I work with daily:
React Native · Expo · TypeScript · React · Next.js
Node.js · GraphQL · REST APIs
OpenAI API · LangChain · Pinecone
Firebase · Supabase · AWS · Docker · Vercel
📈 Real examples of impact:
- Stabilized and scaled a React Native app serving thousands of monthly users, refactored core modules, reduced crashes, and improved release confidence.
- Led architecture and delivery of enterprise mobile products at Carrier Digital, integrating Salesforce APIs via AWS Lambda inside a large Mono Repo team.
- Built AI-powered chat, recommendation, and workflow features using OpenAI + vector search, improving engagement and cutting manual work for end users.
- Reduced technical debt in legacy React Native codebases while maintaining feature delivery velocity, without slowing down the roadmap.
💬 How I work:
I care about your product outcome, not just closing tickets. I write clean, structured TypeScript, communicate proactively, and flag issues early. If it's on my plate, it gets delivered.
If you're building a React Native or Expo app, or need AI features integrated into an existing mobile product, I'd love to hear about it. Feel free to send a message; I respond within a few hours. 📩
React Native
Mobile App Development
Expo.io
iOS Development
Android App Development
Supabase
Firebase
OpenAI API
Artificial Intelligence
Node.js
App Store Optimization
Mobile UI Design
API Integration
Push Notifications
Mobile App Testing
Rajib S.
Kathmandu, Nepal
$45/hr
5.0
49 jobs
I’m a Senior MERN Stack Developer with 7+ years of experience building scalable SaaS platforms, startup MVPs, and high-performance web and mobile applications using React.js, Next.js, Node.js, Express.js, MongoDB, PostgreSQL, and React Native.
I help startups and growing businesses turn product ideas into secure, production-ready applications — from MVP development to scalable SaaS architecture.
If you need a developer who understands both technical execution and business outcomes, you're in the right place.
What I Build:
1. SaaS platforms (B2B & B2C)
2. Startup MVPs (rapid validation builds)
3. AI-integrated web applications
4. Custom dashboards & admin panels
5. REST API & backend architecture
6. Payment integrations (Stripe, subscriptions, usage billing)
7. Cross-platform mobile apps (React Native)
8. Cloud-deployed scalable systems (AWS, Firebase)
Core Technical Expertise
1. Frontend Development
2. React.js
3. Next.js
4. TypeScript
5. Tailwind CSS
6. Responsive UI/UX implementation
Backend Development
1. Node.js
2. Express.js
3. REST API architecture
4. Authentication & authorization (JWT, OAuth)
5. Microservices-ready architecture
Database & Infrastructure
1. MongoDB
2. PostgreSQL
3. AWS deployment
4. Firebase
5. CI/CD pipelines
6. Git-based workflows
Mobile Development
1. React Native (cross-platform iOS & Android)
2. API integration
3. App Store & Play Store deployment
Proven Track Record
1. 100K+ earned on Upwork
2. 20+ scalable web platforms delivered
3. 15+ mobile applications launched
4. Long-term collaborations with US-based startups
5. Experience across healthcare, recruiting, travel, and education industries
Why Clients Hire Me
1. Clean, modular, and scalable code
2. Clear communication and proactive updates
3. Business-focused architecture decisions
4. On-time milestone delivery
5. Long-term product thinking (not just task execution)
I don’t just build features, I build systems designed for growth.
🤝 Let’s Build Something Scalable
Whether you're launching a startup MVP, improving an existing SaaS product, or scaling a web/mobile platform, I can help you architect and deliver a solution that is secure, maintainable, and ready for growth.
Send a message and let’s discuss your project.
React Native
Mobile App Development
React
JavaScript
TypeScript
Redux
Next.js
Firebase
API Development
Node.js
MongoDB
Front-End Development
Web Application Development
Software Development
Python
Shiva B.
Walin, Nepal
$8/hr
5.0
11 jobs
Hi! I’m Shiva Bhusal, a passionate Full-Stack Web & Mobile Developer with expertise in MERN Stack, React Native, PHP, SQL, and Figma. I focus on creating high-quality, responsive websites and mobile apps with clean code and intuitive designs.
I have a strong core in JavaScript and extensive experience in:
• Front-End: React.js, Next.js
• Back-End: Node.js, Express.js, PHP
• Database: SQL, MongoDb
• Mobile Development: React Native
• Design & UI/UX: Figma
• Others: Github, Git, Linux
I am self-motivated, disciplined, and detail-oriented, committed to delivering projects on time with high quality. I enjoy collaborating with clients to turn their ideas into real products that work seamlessly across web and mobile platforms.
Why hire me?
• Strong JavaScript & MERN Stack skills
• Expertise in Figma design
• Experience in database management (SQL) and server-side scripting (PHP)
• Intermediate in React Native for cross-platform apps
• Committed to quality, deadlines, and client satisfaction
Let’s work together to bring your ideas to life!
Rate: $8/hr
React Native
React
MERN Stack
Flutter
Web Design
WordPress
Next.js
JavaScript
PHP
SQL
Photo Editing
Computer Science
Figma
C
Web Development
TypeScript
Gaurav S.
Kathmandu, Nepal
$15/hr
5.0
1 jobs
Hi, I am a full-stack developer with 8+ years of experience building cross-platform mobile apps and high-performance web applications for startups and enterprises. My core focus is React, React Native, and Node.js but I own the entire stack so your project never gets stuck waiting on someone else.
What you could hire me for:
React Native Mobile Apps - iOS and Android from a single codebase. Built with Expo or bare workflow, optimised for performance, and ready for the App Store and Google Play.
React and Next.js Web Apps - Fast, SEO-friendly, and scalable web applications with clean component architecture and smooth user experiences.
Full Stack Development - Node.js, Express, and Laravel backends with MongoDB, MySQL, and Firestore databases. Solid APIs that your frontend can rely on.
API Development and Integrations - Payment gateways, third-party services, and custom REST APIs built securely and documented clearly.
Performance Optimization - Faster load times, smaller bundles, smoother animations, and better Lighthouse scores.
Cloud Deployment - GCP, AWS, Firebase, and Azure. CI/CD pipelines, serverless functions, and scalable infrastructure.
Tech stack:
React · React Native · Expo · Next.js · Redux · Zustand · Node.js · Express · Laravel · MongoDB · MySQL · Firestore · Tailwind · Material UI · GCP · AWS · Firebase · Azure
I do not just write code. I ask the right questions, flag potential issues early, and keep you updated throughout the project. Most of my clients come back for their next project.
If you want a developer who is reliable, communicates clearly, and takes ownership of results, send me a message and let us build something great.
React Native
React
TypeScript
Next.js
Node.js
ExpressJS
NestJS
Python
Django
MongoDB
MySQL
Unit Testing
Mocha Framework
Chai
Material UI
Sushan S.
Lalitpur, Nepal
$30/hr
5.0
1 jobs
Key Facts
⭐ 5 years in the Software Industry
⭐ 4+ years with Flutter
⭐ 40+ Client Projects Completed
⭐ Worked with 10+ different companies
Hello there.
Do you have a mobile app idea ?
We can make it a reality together.
With 5 years of experience in the software industry and over 4 years of experience working with Flutter, I can build you the right mobile app that you need for your business to perform smoothly. My expertise lies in crafting mobile applications quickly so that you can have you business growing with a mobile app in no time.
Flutter
Django
Python Script
JavaScript
TypeScript
Dart
REST API
GraphQL
Git
GitHub
SQL
Bishal B.
Itahari, Nepal
$15/hr
4.9
1 jobs
Highly accomplished Full Stack Developer with over 5 years of experience specializing in the MERN stack, with additional expertise in TypeScript and React Native. Known for delivering high-quality, scalable, and user-centric web applications. Proficient in leveraging cutting-edge technologies and frameworks to drive innovation and achieve optimal results. Strong problem-solving skills, coupled with excellent communication and collaboration abilities, ensure seamless project execution and client satisfaction. Committed to staying at the forefront of industry trends and continuously expanding technical knowledge to deliver exceptional, professional solutions.
- Website and CMS development
- Rest APIs and GraphQL
- Cross-platform mobile app development (React Native)
React Native
React
JavaScript
Node.js
Next.js
NestJS
MongoDB
PostgreSQL
Redux
TypeScript
ExpressJS
Docker
Tailwind CSS
GraphQL
Socket.io
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