You will get React Developer | Full Stack Developer for AI App or ChatGPT Integration
Top Rated
Top Rated
Project details
Want to build a powerful AI-powered web app or integrate ChatGPT into your platform?
You’re in the right place.
At Expertinasia Pvt. Ltd., we specialize in developing AI-driven applications and smart web solutions using React and full-stack technologies. Whether you need a custom AI chatbot, automation tool, or a SaaS AI platform, we help you build solutions that are intelligent, scalable, and user-friendly.
🤖 What You Will Get
✔️ Custom AI Web Application (React-based)
✔️ ChatGPT / OpenAI API Integration
✔️ Smart Chatbot or AI Assistant
✔️ Clean, Modern & Responsive UI
⚙️ Technologies We Use
Frontend: React.js, Next.js, TypeScript
Backend: Node.js, Express.js / NestJS
AI Integration: OpenAI (ChatGPT), APIs, Automation Tools
Database: MongoDB, PostgreSQL
Deployment: AWS, Vercel, Firebase
💡 AI Solutions We Build
AI Chatbots & Virtual Assistants
SaaS AI Platforms
Content Generation Tools
Customer Support Automation
AI Workflow Automation
GPT-based Business Tools
🎯 Perfect For
Startups building AI products
Businesses automating operations
SaaS platforms adding AI features
CRM / ERP systems with AI integration
📞 Let’s Build Your AI Product
You’re in the right place.
At Expertinasia Pvt. Ltd., we specialize in developing AI-driven applications and smart web solutions using React and full-stack technologies. Whether you need a custom AI chatbot, automation tool, or a SaaS AI platform, we help you build solutions that are intelligent, scalable, and user-friendly.
🤖 What You Will Get
✔️ Custom AI Web Application (React-based)
✔️ ChatGPT / OpenAI API Integration
✔️ Smart Chatbot or AI Assistant
✔️ Clean, Modern & Responsive UI
⚙️ Technologies We Use
Frontend: React.js, Next.js, TypeScript
Backend: Node.js, Express.js / NestJS
AI Integration: OpenAI (ChatGPT), APIs, Automation Tools
Database: MongoDB, PostgreSQL
Deployment: AWS, Vercel, Firebase
💡 AI Solutions We Build
AI Chatbots & Virtual Assistants
SaaS AI Platforms
Content Generation Tools
Customer Support Automation
AI Workflow Automation
GPT-based Business Tools
🎯 Perfect For
Startups building AI products
Businesses automating operations
SaaS platforms adding AI features
CRM / ERP systems with AI integration
📞 Let’s Build Your AI Product
Programming Languages
PHP, HTML & CSS, JavaScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$110
|
Standard
$220
|
Advanced
$310
|
|---|---|---|---|
| Delivery Time | 15 days | 30 days | 45 days |
Number of Revisions | 2 | 4 | Unlimited |
Design Customization | |||
Content Upload | |||
Responsive Design | - | ||
Source Code | - |
35 reviews
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JW
John W.
May 4, 2026
React Native App
Rajkumari and her team are excellent communicators and very talented developers. I used them for an app and it was a great experience. Will hire again.
MA
Martin A.
Mar 4, 2025
Looking for DevOps to help optimize web app
Rajkumari and team exceeded our expectations with their innovative solutions and timely delivery, making them an invaluable partner in our project.
TA
Travor A.
Feb 8, 2024
Full Stack Engineer for E-Learning Platform - Remote Freelance Position with Tech Lead Potential
Hiring Rajkumari and her team for our MyAjarn e-learning platform was a great decision. They delivered high-quality work within deadlines, showcasing their expertise in Angular, NodeJS + Hapi Framework, and Ionic for mobile development. Their ability to tackle challenges and implement efficient solutions was impressive. Communication was clear, and they integrated well with our existing team, showing great professionalism throughout the project. Their work on deploying mobile apps and managing our DigitalOcean infrastructure was particularly noteworthy. I appreciate their dedication and would recommend them for any web and mobile app development projects.
CT
Connor T.
May 18, 2023
Close contract with you
Our development team deserves high praise for their exceptional skills and unwavering dedication. Through their expertise and hard work, they consistently deliver outstanding results. Their collaborative efforts and precise execution ensure the successful completion of projects, surpassing expectations. They stay updated with the latest technologies, enabling them to create innovative solutions. Their adaptability and effective communication foster a culture of teamwork and trust. Their commitment to excellence sets a strong example for others, and we greatly appreciate their invaluable contributions.
DG
Dilip G.
Sep 19, 2022
Frontend Developer - ReactJs
About Rajkumari
Full-Stack, AI, React.js, Next.js, Node.js, JavaScript, React Native
100%
Job Success
Indore, India - 1:31 am local time
As a Full Stack Developer, I help clients build products from scratch, improve existing applications, modernize legacy systems, and scale platforms for long-term growth. My experience covers the complete software development lifecycle: planning, architecture, development, deployment, AI integration, and ongoing support. I work across both frontend and backend and can join as an individual developer, part of your team, or a technical lead driving product development.
My core stack as a Full Stack Developer includes React, Next.js, Node.js, TypeScript, JavaScript, React Native, Python, PHP, Angular, Vue.js, Django, and Laravel. I build responsive interfaces, scalable backends, REST and GraphQL APIs, SaaS platforms, mobile apps, business dashboards, and custom web applications, and I add AI where it creates real value, from chat and smart recommendations to OpenAI and LLM features kept under human review.
I also work extensively with Tailwind CSS, Material UI (MUI), SCSS, CSS, HTML, Webpack, and Vite. On data, I have strong experience with PostgreSQL, MongoDB, MySQL, Supabase, Firebase/Firestore, and DynamoDB, designing database architectures, optimizing structures, improving performance, and building systems that scale with the product.
My services:
✅ Full Stack Development
✅ React.js and Next.js Development
✅ Node.js and TypeScript Development
✅ JavaScript Development
✅ React Native Mobile App Development
✅ Python, Django, PHP, and Laravel Development
✅ AI Integration: OpenAI, LLMs, chatbots, RAG, automation
✅ Frontend and Backend Development
✅ API Development and Third-Party Integrations
✅ Database Design and Optimization (PostgreSQL, Supabase, Firebase, MongoDB)
✅ SaaS Development and MVP Development
✅ Custom Web and Mobile Application Development
✅ Dashboard and Admin Panel Development
✅ Payment and Stripe Integration
✅ Performance Optimization and Application Scaling
✅ Legacy System Modernization and Code Refactoring
✅ Cloud and AWS Development, CI/CD
✅ System Architecture and Technical Consulting
✅ Bug Fixing, Maintenance, and Long-Term Support
As a Full Stack Developer, I focus on what matters to a business: clean architecture that lowers future cost, fast and reliable performance, secure data, and code that stays maintainable as the product grows. I verify before calling work done, so you get stability, not surprises.
I have delivered:
✅ SaaS products, marketplaces, CRMs, and ERP systems
✅ Business management platforms and customer portals
✅ Scheduling systems, internal tools, and dashboards
✅ eCommerce platforms and enterprise software
✅ Cross-platform mobile applications on both app stores
My stack and tools:
✅ Frontend: React, Next.js, Vue.js, Angular, TypeScript, JavaScript, Tailwind CSS, Material UI, SCSS, Webpack, Vite
✅ Backend: Node.js, Express.js, NestJS, Python, Django, PHP, Laravel
✅ Mobile: React Native, Flutter, cross-platform development
✅ AI: OpenAI API, LLM integration, chatbots, RAG, AI app development, automation
✅ Databases: PostgreSQL, MongoDB, MySQL, Supabase, Firebase, DynamoDB
✅ Cloud and DevOps: AWS, Docker, CI/CD, Git, GitHub, GitLab, Bitbucket
✅ Integrations: REST, GraphQL, WebSocket, Stripe, payment gateways, authentication systems
Beyond development, I contribute to architecture planning, code reviews, Git workflows, CI/CD, team collaboration, documentation, and delivery planning, writing clean, maintainable, scalable code that supports long-term growth.
Whether you need to launch a new product, extend an existing application, add AI features, improve performance, fix technical issues, or modernize a legacy system, I provide reliable support from concept to deployment.
Skills & Keywords:
Full Stack Developer, Senior Full Stack Developer, AI SaaS Developer, AI Developer, Web Developer, Software Developer, Application Developer, Frontend Developer, Backend Developer, React Developer, React.js Developer, Next.js Developer, Node.js Developer, JavaScript Developer, TypeScript Developer, React Native Developer, Mobile App Developer, Python Developer, Django Developer, PHP Developer, Laravel Developer, Vue.js Developer, Angular Developer
React, Next.js, Node.js, TypeScript, JavaScript, React Native, Flutter, Python, Django, PHP, Laravel, Vue.js, Angular, HTML, CSS, SCSS, Tailwind CSS, Material UI, MUI, Bootstrap, REST API, GraphQL, WebSocket
Thanks,
Raj
Steps for completing your project
After purchasing the project, send requirements so Rajkumari can start the project.
Delivery time starts when Rajkumari receives requirements from you.
Rajkumari works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Analysis & AI Planning
We understand your AI use case, business goals, and define how ChatGPT/AI will be integrated. Features & workflows AI use cases (chatbot, automation, content, etc.) Tech stack & architecture planning
UI/UX Design & System Architecture
We design an intuitive interface and plan the backend structure. User flow & wireframes Chat interface / dashboard design API & database structure planning