You will get Custom REST API & Backend Development - Node.js
Project details
I build high-performance REST APIs and backend systems using Node.js, Express, and TypeScript. With expertise in MongoDB and PostgreSQL, I design scalable architectures with JWT authentication, payment integrations, and third-party APIs. I deliver clean, well-documented code with proper error handling, tested endpoints, and cloud deployment support — ideal for startups and growing SaaS products.
What's included
| Service Tiers |
Starter
$150
|
Standard
$250
|
Advanced
$350
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 21 days |
Number of Revisions | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
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AI
Asad I.
Jul 10, 2026
Build an AI RAG Chatbot Using OpenAI + Pinecone + Node.js (Knowledge Base Chatbot)
Excellent freelancer! Delivered exactly what I needed with great communication and fast turnaround. Professional, reliable, and highly skilled. I would definitely recommend them and look forward to working together again.
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Christopher J.
Jun 21, 2026
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Did a great job on our website & mobile work. Will work with in the future.
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Oliver N.
Oct 10, 2025
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Abdul Majid did an excellent job on my Supabase authentication task. His code structure was clean, well-organized, and followed best practices. He completed the work ahead of schedule and communicated clearly throughout the process. I’m very impressed with his professionalism and technical skills. Highly recommended, and I’d be happy to work with him again in the future!
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Trevor B.
Oct 6, 2025
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Great experience working together. Understood the project well and implemented all features exactly as requested.
About Abdul
Senior Full-Stack & AI Developer | MERN , SaaS, Chatbots, RAG
86%
Job Success
Islamabad, Pakistan - 2:04 pm local time
With 6+ years of experience building scalable SaaS platforms, AI-powered applications, and high-performance web systems. I specialize in combining modern full-stack development with AI (LLMs, RAG, automation workflows) to help businesses reduce manual work, improve user experience, and scale faster.
I have delivered 100+ projects including SaaS platforms, AI chatbots, automation systems, e-commerce apps, booking systems, and internal tools. My focus is clean architecture, performance, and production-ready systems that directly support business growth.
Recent client feedback |⭐️⭐️⭐️⭐️⭐️
Abdul did an excellent job on my Supabase authentication task. His code structure was clean, well organized, and followed best practices. He completed the work ahead of schedule and communicated clearly throughout.
Core Expertise
Full-Stack Development
✅ React js, Next js (SSR, SSG)
✅ TypeScript, JavaScript ES6+
✅ Redux, Zustand, Context API
✅ Tailwind CSS, responsive UI
✅ Node js, Express js
✅ PHP, Laravel
✅ Vue js, MERN stack
AI & Automation (High-Value Skills)
✅ AI Chatbots (OpenAI, GPT-based systems)
✅ LLM integrations and custom AI workflows
✅ RAG (Retrieval-Augmented Generation) systems
✅ AI-powered SaaS applications
✅ Document-based Q&A systems
✅ AI email automation and lead qualification
✅ n8n / workflow automation (API-based systems)
✅ Prompt engineering and response control
APIs & Integrations
✅ REST and GraphQL APIs
✅ Stripe, PayPal, Razorpay
✅ Firebase, Supabase
✅ Third-party APIs, webhooks
✅ Secure authentication (JWT, OAuth)
Databases
✅ MongoDB
✅ PostgreSQL
✅ MySQL
Infrastructure & Deployment
✅ AWS, DigitalOcean
✅ Vercel, Netlify
✅ Scalable cloud architecture
AI + SaaS Solutions I Build
✅ AI chatbots for customer support & automation
✅ RAG-based systems (chat with documents, PDFs, knowledge bases)
✅ AI-powered dashboards and SaaS platforms
✅ Lead qualification & email automation systems
✅ Internal AI tools for business workflows
✅ GPT-powered features inside web/mobile apps
Web, SaaS & Mobile Development
I design and develop modern applications that are secure, scalable, and optimized for performance.
✅ Multi-tenant SaaS platforms
✅ Subscription-based systems
✅ Admin dashboards & analytics
✅ Real-time systems (chat, notifications, tracking)
✅ Booking, e-commerce, and management systems
✅ React Native apps (iOS & Android)
What I Deliver
✅ End-to-end SaaS & AI application development
✅ Clean, scalable, and maintainable code
✅ API design & integrations
✅ AI system integration (LLM, RAG, automation)
✅ Performance optimization (SSR, caching)
✅ Long-term support & feature scaling
Why Clients Work With Me
✅ Strong mix of AI + Full-Stack expertise (rare combination)
✅ Focus on business outcomes, not just code
✅ Clean architecture for long-term scalability
✅ Fast communication and reliable delivery
✅ Experience building production-ready SaaS systems
Keywords:
react developer, next js developer, node js developer, laravel developer, full stack developer, senior full stack developer, ai developer, ai chatbot developer, llm developer, rag developer, openai developer, gpt developer, ai automation, n8n developer, workflow automation, saas developer, saas application developer, web application developer, mern stack developer, typescript developer, react native developer, api integration expert, graphql developer, stripe integration, firebase developer, supabase developer, authentication expert, jwt authentication, multi tenant saas, subscription based saas, admin dashboard developer, real time applications, mongodb developer, postgresql developer, scalable architecture, aws developer, performance optimization, startup saas developer, enterprise web applications
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.
API Design & Database Architecture
Design RESTful API endpoints, set up database schema, configure authentication middleware, and implement core business logic with proper error handling.