Building scalable backends with cutting-edge tech. Creating high-performance web applications with clean, efficient code and modern architecture.
I’m Manjeet, a MERN stack developer with 3+ years of experience. I work across Node.js, NestJS and Next.js, and I add AI features such as RAG and LLM integrations.
From database schema to live interface, with AI features where they help.
React.js and Next.js interfaces built for speed and clarity.
RESTful APIs and microservices that hold up under high traffic.
LLM features, document Q&A and agent workflows.
Databases, live updates and payment gateways.
Developed a scalable Slack add-on enabling teams to create interactive polls and surveys using Slack Block Kit. Implemented secure OAuth 2.0 authentication, real-time vote tracking, and analytics dashboards to visualize user responses. Designed APIs for seamless Slack integration and optimized response handling for high concurrency.
Built a robust backend system for pharmaceutical supply chain management, supporting manufacturers, distributors, and retailers. Implemented modules for inventory tracking, invoicing, GST compliance (GSTR-1), returns processing, and warehouse operations.
Built a customizable AI chatbot platform that can be integrated into any website through a lightweight script. Developed features such as real-time conversations, lead collection, FAQ automation, human handoff support, customizable themes, analytics, and domain-based deployment.
Developed an intelligent voice navigation assistant that can be embedded into any website using a simple script. Enables visitors to navigate pages, search content, trigger actions, and interact with website features using natural voice commands.
Developed an agentic AI workspace where users upload documents and ask questions through a conversational interface. Built a document-ingestion pipeline that chunks content, generates embeddings, and stores vectors in ChromaDB for RAG-based retrieval, with LangGraph-orchestrated workflows, conversational memory for follow-up questions, and source references alongside answers.
Engineered a real-time fantasy sports platform with live match updates and dynamic leaderboard systems. Integrated third-party sports APIs and implemented WebSocket-based communication using Socket.IO for instant score updates.
Built an intelligent garden management platform with AI-powered plant detection and disease identification using image recognition. Enabled multi-language support and timezone-aware scheduling for global usability.
Developed a modern e-commerce platform using Next.js and Node.js with AI-driven product recommendations and user behavior analytics. Implemented personalized product suggestions, automated insights, and scalable APIs.
Developed a real-time multiplayer casino gaming platform with synchronized game states and interactive player sessions. Implemented WebSocket-based architecture for low-latency communication and smooth gameplay.
Designed and implemented a real-time color prediction game with secure payment gateway integration. Built game logic to handle user bets, outcomes, and wallet transactions while ensuring fairness and reliability.
Created a secure backend system for managing financial transactions across multiple account types. Implemented features like balance management, transaction history, and fund transfers with strong validation and error handling.
Developed a multi-panel workforce platform connecting consumers, workers, and businesses through an intelligent job marketplace. Implemented AI-based job matching to recommend relevant tasks based on worker skills, availability, and activity patterns.
Built a comprehensive school management ERP system to streamline academic and administrative operations. Implemented modules for student records, attendance tracking, exam scheduling, result processing, fee management, and class organization.
Built an on-demand purchasing and delivery platform for customers on yachts or near beaches, who create orders using a product name, URL, or image. Drivers purchase or collect the requested items from beach-side locations and deliver them to yachts, with Stripe payments and Socket.IO real-time order updates.
Developed a healthcare marketplace platform that helps healthcare professionals manage patients and care workflows. Implemented patient management, treatment record management, and follow-up tracking backed by Node.js APIs and MongoDB data models.
Developed an e-commerce website for a US cannabis-related business with admin product and category management and customer-facing product browsing and purchasing. Built the backend APIs and database functionality behind these workflows.
Ready to bring your ideas to life? I'm available for freelance work, full-time positions, or just a chat about tech.