Abhishek Kumar
Full-Stack Developer · MERN, Next.js & AI Integration
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Built and deployed a production-grade multi-tenant WhatsApp AI lead qualification platform for real estate, using LangGraph, Meta Cloud API, and OpenAI.
An AI agent (not a script) qualifies leads through natural conversation — understanding property type, location, budget, and timeline. Runs on a 7-node LangGraph state machine, not hardcoded if-else flows. Includes multi-language support (English, Hindi, Telugu, Tamil), automated follow-ups, vector-based semantic search for vague queries, real-time broker alerts, and multi-tenant isolation with AES-256 encrypted credential storage.
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Built NexCart, a production-ready e-commerce platform with secure Polar payments, automated order fulfillment via webhooks, per-order Stream support chat, and video calling. Includes an admin dashboard with ImageKit image management and role-based access. Stack: Node.js, TypeScript, Express, PostgreSQL, React, Clerk, Tailwind CSS. Deployed on Railway.
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🚀 Built VisionCraft — An AI-Powered Image Styling SaaS
VisionCraft allows users to upload a photo, choose from multiple artistic styles, and generate AI-styled images in seconds.
Key Features:
• AI image transformation using OpenAI
• Multiple style presets
• Secure authentication with Clerk
• Subscription-based pricing plans
• Image storage and delivery with ImageKit
• PostgreSQL database integration
• Responsive modern UI built with Next.js
Tech Stack:
Next.js • TypeScript • OpenAI • PostgreSQL • Clerk • ImageKit
This project helped me gain hands-on experience building AI-powered SaaS applications, integrating AI workflows, authentication systems, and subscription management.
#NextJS #TypeScript #OpenAI #AI #SaaS #WebDevelopment #FullStackDevelopment #Portfolio
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Full-stack chat and video calling app built with MERN stack and Stream SDK. Features real-time 1-on-1 messaging with typing indicators and reactions, video calling with screen sharing, friend request system, email verification via Resend, JWT authentication, and 32 UI themes. Built with React.js, Node.js, MongoDB, Zustand, and TanStack Query.
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