You will get ChatGPT API Integration & AI Agent Development for SaaS Apps
Top Rated
Project details
Looking to integrate ChatGPT virtual assistants or custom OpenAI agents into your website or SaaS app? I specialize in ChatGPT API Integration and AI Agent Development — helping businesses automate workflows, enhance customer experience, and scale smarter.
I build custom AI solutions using OpenAI, LangChain, and modern web stacks (Next.js, Node.js, Supabase). From chatbots and virtual assistants to AI-powered automation, every system is secure, fast, and production-ready.
What I Offer:
• Custom ChatGPT Integrations – Build tailored GPT-based chatbots for your business.
• OpenAI Agent Development – Intelligent assistants that handle support, leads, or automation.
• Seamless API Integration – Connect ChatGPT to your CRM, website, or app.
• Natural Language Processing (NLP) – Create more human-like AI conversations.
• AI Workflow Automation – Streamline repetitive processes for SaaS, eCommerce, or internal tools.
Let’s discuss your project in Upwork Chat — I’ll share a clear timeline and custom quote based on your unique goals.
I build custom AI solutions using OpenAI, LangChain, and modern web stacks (Next.js, Node.js, Supabase). From chatbots and virtual assistants to AI-powered automation, every system is secure, fast, and production-ready.
What I Offer:
• Custom ChatGPT Integrations – Build tailored GPT-based chatbots for your business.
• OpenAI Agent Development – Intelligent assistants that handle support, leads, or automation.
• Seamless API Integration – Connect ChatGPT to your CRM, website, or app.
• Natural Language Processing (NLP) – Create more human-like AI conversations.
• AI Workflow Automation – Streamline repetitive processes for SaaS, eCommerce, or internal tools.
Let’s discuss your project in Upwork Chat — I’ll share a clear timeline and custom quote based on your unique goals.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included $100
These options are included with the project scope.
$100
- Delivery Time 2 days
- Number of Revisions 1
- Number of Pages 0
- Design Customization
- Content Upload
- Responsive Design
- Source Code
Frequently asked questions
34 reviews
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JB
Joshua B.
Jan 19, 2026
Software Developement for a scheduling platform
SB
Simone B.
Jan 12, 2026
React, Next.js, Supabase, and Replit Developer for Web App
It was a great experience working with Mateen. He’s very comfortable with AI tools like Cursor and has solid hands-on experience with vibe-coding platforms such as Replit and Lovable. Overall, his full-stack skills are impressive, and he truly stands out when it comes to JavaScript frameworks like React, Next.js and Node.js
SB
Simone B.
Oct 31, 2025
React, Next.js, Supabase, and Replit Developer for Web App
Great experience working with Mateen
AL
Arina L.
Oct 22, 2025
Full-Stack Developer (React, Next.js, Node.js, Supabase)
Delivered everything on time, made a very good movile version
AL
Arina L.
Oct 14, 2025
React Next Node supabase
Abdul Mateen did an outstanding job using React and Next.js to build clean, scalable solutions. He also smartly leveraged AI tools to speed up development and optimize workflows, delivering high-quality results efficiently.
About Abdul
SaaS MVP Developer | Next.js, Supabase, Stripe & AI Integration
100%
Job Success
Lahore, Pakistan - 4:05 am local time
Over the last few years, I have built and improved SaaS products, startup web applications, subscription platforms, dashboards, and AI-powered tools for clients worldwide. My focus is helping founders move from idea to a production-ready product that can onboard users, process payments, and scale without requiring a complete rebuild.
Whether you need a new SaaS MVP, feature development, bug fixing, or AI integration, I can take ownership of the technical side and deliver clean, maintainable code.
What I can help you build:
✅ SaaS MVP Development
✅ Next.js Web Applications
✅ Supabase Backends & Database Design
✅ Stripe Subscription & Payment Systems
✅ Authentication & User Management
✅ Admin Dashboards & Analytics
✅ AI-Powered Features with OpenAI
✅ API Integrations & Automations
✅ Startup Product Development
✅ Performance Optimization & Bug Fixing
Tech Stack:
• Next.js
• React
• TypeScript
• JavaScript
• Supabase
• PostgreSQL
• Node.js
• Stripe
• OpenAI API
• Tailwind CSS
• REST APIs
• Vercel
Why clients hire me:
✔ Top Rated Freelancer
✔ 40+ Successfully Completed Projects
✔ Strong Experience with Startup MVPs
✔ Fast Communication & Reliable Delivery
✔ Clean, Scalable Code
Recent projects include SaaS platforms, scheduling systems, subscription-based products, startup dashboards, payment integrations, AI-powered applications, and custom web applications built with Next.js and Supabase.
If you're looking for a developer who can turn your idea into a working product quickly while maintaining code quality and scalability, send me a message and let's discuss your project.
Steps for completing your project
After purchasing the project, send requirements so Abdul can start the project.
Delivery time starts when Abdul receives requirements from you.
Abdul works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Gathering
Before starting, I’ll review your goals, app context, and target automation. We’ll confirm which AI features (ChatGPT API or custom prompts) best fit your use case.
Development
Once approved, I’ll integrate or enhance your ChatGPT features using the OpenAI API and your tech stack (Next.js, Node.js, or Replit). Includes API setup, testing, and optimization.