You will get AI Integration for Your Web App - OpenAI, Gemini, LLMs & Custom Workflows
Top Rated
Top Rated
Project details
I built ResearchCollab.ai - a full-stack AI research platform integrating OpenAI, Gemini, DeepSeek, and Perplexity into one product. Not a ChatGPT wrapper. Real AI engineering.
44 projects. 100% Job Success. Top Rated Plus. 6,000+ hours on Upwork.
If you need AI integrated into your web application, I build it production-ready.
[WHAT YOU GET]
• LLM integration (OpenAI, Gemini, Claude, DeepSeek, or custom)
• AI chat interfaces and virtual assistants
• RAG pipelines for searching your own data
• Content generation, summarization, and analysis
• Intelligent search and recommendations
• React or Next.js frontend with AI-powered features
• Python or Node.js backend for AI processing
• Full source code and documentation
[BEST FOR]
• Startups building AI-first products
• Companies adding AI features to existing web apps
• Teams who need AI done properly, not just an API call
• Founders who want intelligent features that work at scale
I don't build AI demos. I build AI features that handle real users and real data in production.
Starts at $1,500 for a single AI feature. Describe your use case and I'll outline the best approach.
44 projects. 100% Job Success. Top Rated Plus. 6,000+ hours on Upwork.
If you need AI integrated into your web application, I build it production-ready.
[WHAT YOU GET]
• LLM integration (OpenAI, Gemini, Claude, DeepSeek, or custom)
• AI chat interfaces and virtual assistants
• RAG pipelines for searching your own data
• Content generation, summarization, and analysis
• Intelligent search and recommendations
• React or Next.js frontend with AI-powered features
• Python or Node.js backend for AI processing
• Full source code and documentation
[BEST FOR]
• Startups building AI-first products
• Companies adding AI features to existing web apps
• Teams who need AI done properly, not just an API call
• Founders who want intelligent features that work at scale
I don't build AI demos. I build AI features that handle real users and real data in production.
Starts at $1,500 for a single AI feature. Describe your use case and I'll outline the best approach.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$499
|
Standard
$799
|
Advanced
$1,399
|
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 15 days |
Number of Revisions | 2 | 4 | 8 |
Number of Pages | 2 | 4 | 9 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional Page
(+ 1 Day)
+$70
Design Customization
(+ 1 Day)
+$70Frequently asked questions
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MK
Mohammed K.
Jul 30, 2026
Full-stack Development - React with Python and FastAPI
MK
Mohammed K.
Jul 30, 2026
Full-stack Development - React with Python and FastAPI
MK
Mohammed K.
Jun 27, 2026
Full-Stack Developer Needed (React + Vite / Python FastAPI)
JF
Juan Carlos F.
Feb 13, 2026
Full stack developer
A very professional, high-quality job. I’m very happy with the service.
MM
Mark M.
Jul 17, 2025
Front End Developer Code Design System Components
Rashvin did a great job will work wiht him again and recommend him to anyone.
About Rashvin
Full Stack React & Next.js Developer | AI Integration | SaaS & Web App
100%
Job Success
Surat, India - 12:00 am local time
I build production web applications and AI-powered platforms that real businesses depend on. Not landing pages. Not prototypes. Products that handle users, process data, and scale.
[RECENT PROJECT]
ResearchCollab.ai - I designed and built the full-stack architecture for an AI-powered research platform used by PhD students, journalists, and researchers. Integrated OpenAI, Gemini, DeepSeek, and Perplexity to power intelligent research workflows. Solo full-stack build: Next.js frontend, Python backend, PostgreSQL database.
[WHAT I BUILD]
▪ SaaS Platforms - dashboards, billing, user management, analytics
▪ AI-Powered Products - LLM integration, chatbots, AI workflows, RAG pipelines
▪ Web Applications - responsive, fast, production-grade React and Next.js apps
▪ Telehealth & Healthcare Platforms - HIPAA-aware, WebRTC, real-time video
▪ API & Backend Systems - Node.js, Python, FastAPI, REST, authentication
[MY STACK]
React | Next.js | TypeScript | Node.js | Python | FastAPI | PostgreSQL | Supabase | MongoDB | Firebase | Tailwind CSS | REST APIs | OpenAI | Gemini | LLM Integration
[HOW I WORK]
I take full ownership. I don't wait for instructions - I understand your goals, flag risks early, ship clean code, and communicate at every step. Git, CI/CD, code reviews, agile. Comfortable working solo or embedded in your team.
[BEST FIT FOR]
▪ Startups building or scaling a web product
▪ Companies adding AI features to existing applications
▪ Agencies needing a senior full-stack dev for client projects
▪ Teams who want one reliable developer instead of managing three
Currently available for long-term engagements. Send me your project details or a quick description of what you need - I'll respond with honest feedback on the best approach.
Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, Python Developer, TypeScript, AI Web App, LLM Integration, ChatGPT Integration, SaaS Developer, FastAPI, PostgreSQL, Supabase, MongoDB, MERN Stack, Tailwind CSS, Frontend Developer, Backend Developer, Web Application, REST API Developer, AI Integration, Gemini API, Full Stack Web Development
Steps for completing your project
After purchasing the project, send requirements so Rashvin can start the project.
Delivery time starts when Rashvin receives requirements from you.
Rashvin works on your project following the steps below.
Revisions may occur after the delivery date.
AI Use Case Discovery & Feasibility Check
We define what the AI should do, which model fits best, and how it connects to your app. I flag limitations early so you don't waste money building something that won't work well.
Architecture & AI Pipeline Design
I design the backend architecture - how data flows to the AI model, how responses are processed, and how everything connects to your frontend. Clean, scalable from day one.