You will get OpenAI, GPT, or LLM features integrated into your website or SaaS app
Top Rated
Top Rated
Project details
You will get OpenAI, GPT, or LLM features integrated into your existing website, SaaS app, or business platform. I can help you add AI chatbots, content generation, smart summaries, workflow automation, prompt-based tools, or custom AI features based on your product needs.
I focus on making the AI feature useful, reliable, and easy for your users to use. This includes clean backend API integration, prompt setup, response handling, testing, and connecting the AI workflow with your existing app or data.
I have experience building AI assistants, AI SaaS platforms, content generation tools, backend APIs, and real AI products like TubeGenius, FireVideos, LayerK Agent, and Geviti.
This service is ideal if you already have a website or app and want to add practical AI features without rebuilding everything from scratch.
I focus on making the AI feature useful, reliable, and easy for your users to use. This includes clean backend API integration, prompt setup, response handling, testing, and connecting the AI workflow with your existing app or data.
I have experience building AI assistants, AI SaaS platforms, content generation tools, backend APIs, and real AI products like TubeGenius, FireVideos, LayerK Agent, and Geviti.
This service is ideal if you already have a website or app and want to add practical AI features without rebuilding everything from scratch.
AI Algorithms
Large Language Model, Transformer ModelAI Applications
AI Chatbot, AI Content Creation, AI Text-to-Image, AI Text-to-Speech, AI-Generated Art, AI-Generated Code, AI-Generated Video, Automatic Speech Recognition, Facial Recognition, Image Analysis, Image Recognition, Text RecognitionAI Models
ChatGPT, DALL-E, GPT-3, GPT-4, LLaMA, WhisperWhat's included
| Service Tiers |
Starter
$400
|
Standard
$800
|
Advanced
$1,400
|
|---|---|---|---|
| Delivery Time | 4 days | 8 days | 14 days |
Number of Revisions | 1 | 1 | 1 |
AI Model Integration | - | - | - |
Batch Normalization | - | - | - |
Database Integration | - | - | - |
Detailed Code Comments | - | - | - |
Image Upscaling | - | - | - |
MLOps | - | - | - |
Model Deployment | - | - | - |
Model Documentation | - | - | - |
Model Monitoring | - | - | - |
Model Testing & Optimization | - | - | - |
Model Tuning | - | - | - |
Natural Language Processing | - | - | - |
NLP Tokenization | - | - | - |
Pre-Training | - | - | - |
Prompt Engineering | - | - | - |
Setup File | - | - | - |
Source Code | - | - | - |
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FE
Firdevs E.
Jun 21, 2026
AI Engineer Needed for OpenAI RAG Chatbot
Excellent experience working with Hassaan! He successfully built and integrated a powerful RAG system into our platform. The AI's context retrieval is spot on, and the implementation is seamless.
IM
Ivana M.
Oct 7, 2025
Full Stack developer needed (A)
It was a pleasure working with this freelancer. Communication was smooth, deadlines were respected, and the overall collaboration was professional and efficient. I would definitely consider working together again in the future. Recommended!
BO
Brandon O.
Aug 25, 2025
Help - Back end
SM
Scott M.
May 26, 2025
Firebase / Stripe Integration Developer for Gmail Chrome Extension
Hassaan is a great guy and I enjoyed working with him.
TY
Tim Y.
Jan 17, 2025
Senior Fullstack Engineer
About Hassaan
AI SaaS Developer | RAG, AI Agents & Next.js
100%
Job Success
Lahore, Pakistan - 2:07 pm local time
One of my key projects was "TubeGenius" an AI-powered SaaS platform for YouTube creators. I helped turn the client’s idea into a working product with AI script and title generation, a user-friendly web application and scalable backend functionality. The project grew into a $9,000+ engagement and received excellent client feedback.
More recently, I built and integrated a RAG system into an existing platform. The client highlighted the accuracy of the context retrieval and the seamless implementation.
✅What I Can Help You Build
- AI-powered SaaS platforms
- RAG chatbots and knowledge-base applications
- OpenAI and Claude integrations
- AI content-generation tools
- React and Next.js web applications
- Node.js and Python backend systems
- Subscription platforms with Stripe
- User authentication, roles and dashboards
- REST APIs and third-party integrations
- PostgreSQL and scalable database architecture
- Existing application completion and debugging
- MVP development and production deployment
⭐Core Technology Stack
◾AI and LLMs: OpenAI API, Claude, RAG, embeddings, vector search, AI chatbots, prompt workflows and structured outputs
◾Frontend: React, Next.js, TypeScript, JavaScript and responsive SaaS dashboards
◾Backend: Node.js, Express.js, Python, FastAPI and REST API development
◾Databases: PostgreSQL, MongoDB, Firebase and Supabase
◾SaaS and Integrations: Stripe, authentication, subscription billing, third-party APIs and webhooks
◾Infrastructure: AWS, Docker, Vercel and cloud deployment
✅Relevant Experience
⭐TubeGenius
AI SaaS platform for YouTube creators built using React, Next.js, Node.js, OpenAI and Firebase.
⭐FireVideos
AI-powered content and video platform built with React, Node.js, Flask, Firebase and OpenAI.
⭐LayerK Agent
AI agent platform built using Next.js, Node.js API routes, OpenAI and Vercel.
⭐RAG Chatbot Integration
Built and integrated a context-aware RAG system into an existing production platform.
✅Why Clients Work With Me
-- Clients consistently describe me as reliable, collaborative, professional and easy to communicate with.
Recent feedback includes:
⭐“Excellent experience working with Hassaan! He successfully built and integrated a powerful RAG system into our platform.”
⭐“Hassaan helped to bring my vision to life in a spectacular way. Working with him was smooth and simple, and at the end of the day my SaaS just works.”
I can help whether you are starting with an idea, improving an existing MVP or scaling a working AI product.
Send me a short description of your product, current stack and the feature or problem you need help with. I will review it and suggest the most practical next step.
⭐Send me a Message or Invite me to your job and we can discuss your Project
Steps for completing your project
After purchasing the project, send requirements so Hassaan can start the project.
Delivery time starts when Hassaan receives requirements from you.
Hassaan works on your project following the steps below.
Revisions may occur after the delivery date.
Review your app
I will review your website/app, AI feature idea, and technical requirements.
Plan the integration
I will plan how OpenAI/GPT will connect with your existing system.