Nikhil Gupta

A hands-on repository covering backend engineering fundamentals and JS TS— SOLID principles, clean code practices, TDD basics, cron jobs, and JS TS and JAVA , OOPS concepts.

A full-stack expense management app for shared group spending with automated settlements.

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HiSecure unifies authentication, validation, sanitization, rate-limiting, headers and parsing into a single, consistent security layer for Express applications.

Backend Demo Project using hi-secure for MVP or personal Projects

This app is built with a React frontend, a Node.js backend, and MongoDB for data storage. The activity tracking feature is fully implemented on the backend, while the frontend currently supports document management and user authentication. Real-time collaboration features are planned for future development using Socket.IO.

An AI-powered conversational bot built with Groq LLM, Tavily Web Search, and MemorySaver — enabling normal chat, real-time web results, and contextual memory using LangGraph, TypeScript, and Bun.

A modular Node.js backend powered by Prisma ORM and PostgreSQL. Features clean controller-based routing, environment-based configuration, and scalable project structure — ideal for REST API development.

A modern MERN-based Chat Application where you can chat with your team and also interact with an AI assistant. Built to make communication faster, smarter, and more collaborative.

Backkraft – A clean, scalable, and production-ready Express.js backend built with TypeScript. Includes robust authentication (JWT + refresh tokens), secure password handling, input sanitization, and Zod-based validation. Designed with modular structure and CRUD support for user and task management using MongoDB.

Dockerized MERN application with live reloading in development and production-ready builds.

This repository contains the implementation of a GraphQL API designed for a MERN (MongoDB, Express, React, Node.js) stack application. The API leverages GraphQL's flexible query language to interact with a database and provide efficient and scalable data fetching capabilities.

A React Project

A modern, responsive task management application built with the MERN stack. Features include secure JWT authentication, CRUD operations for tasks, status-based filtering, pagination, and a clean UI powered by TailwindCSS and Framer Motion. Data fetching and state management are optimized with TanStack Query.

A real-time chat application featuring secure JWT-based authentication, live 1:1 messaging with Socket.io, and profile image uploads via Cloudinary. Built with the MERN stack and fully responsive UI for seamless experience across devices.

Blogify01 – A collaborative personal blogging platform built using Node.js, Express, MongoDB, and EJS templating. Developed with a teammate, featuring user authentication, server-side rendered views, and full CRUD for blog posts.

This repository contains a set of Frontend Machine Coding Round problems .

Cool GSAP animations including custom cursor, scroll effects, text animations & timelines.

Node.js & Express backend for a phonebook app with CRUD APIs and MongoDB.

A collection of beginner to intermediate React projects using state, props, routing, forms, CRUD, and dynamic UI with Tailwind. Covers real-world use cases.

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More Than 30 questions that is good for practice that covers from basic to a good level questions so practice it if u want

This repository contains fundamental TypeScript practice including tuples, enums, interfaces, classes, access modifiers, generics, type guards, and more.

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