MERN Stack Project: Build an AI-Powered Interview Prep App (React, Node.js, MongoDB)

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This app allows users to generate personalized interview questions and answers based on their role and experience, take notes, and review topics using AI-generated explanations.

Key Features:

1. User Authentication – Register and log in with JWT-based authentication.
2. Role-Based Interview Sessions – Generate questions based on job role & experience.
3. AI-Powered Q&A – Automatically generate high-quality technical questions and answers using the Gemini API.
4. Accordion Learning UI – View Q&A in an expandable UI for a clean study flow.
5. Dynamic AI Explanations – On-demand concept breakdowns using AI
6. Pinning Important Questions – Pin important questions for quick access.
7. MongoDB Storage – Save and manage sessions and questions for future review.
8. Clean UI with Tailwind – Responsive, modern frontend with smooth UX.

Frontend

00:00 - Demo of Interview Preparation AI App
07:28 - Setting Up React App
09:30 - Tailwind CSS v4 Setup
11:15 - Creating Project Structure (Files & Folders)
12:37 - Installing Required Libraries
15:24 - Defining App Routes
17:42 - Creating Landing Page UI
32:09 - Building Login Popup Form UI
38:13 - Building Sign-Up Popup Form UI

Backend

49:59 - Backend Project Setup
53:00 - Creating Project Structure (Files & Folders)
56:35 - Defining User MongoDB Schema
57:20 - Defining Question MongoDB Schema
58:06 - Defining Session MongoDB Schema
59:11 - Connecting to MongoDB

01:04:24 - Creating Authentication APIs (Login, Sign-Up, Get Profile Info, Image Upload)
01:19:48 - Creating Session APIs (Create, Get All Sessions, Get Session By ID, Delete Session)
01:29:03 - Creating Question APIs (Add Question to Section, Pin a Question)
01:37:25 - Creating AI APIs (Generate Interview Questions and Concept Explanations)

Frontend (Continued)

01:45:32 - Defining API Paths
01:45:53 - Creating Axios Instance
01:47:55 - Integrating Login API
01:49:32 - Creating User Context Provider
01:57:35 - Integrating Sign-Up API

Dashboard Page

02:02:39 - Creating Dashboard Layout
02:08:18 - Fetching All Sessions from Backend
02:10:32 - Creating Dashboard Summary Card UI
02:17:40 - Creating Session Form Popup
02:23:35 - API Call to Create New Session

Interview Prep Page

02:27:31 - Building Interview Prep Page UI
02:35:00 - Fetching Session Details by ID
02:39:15 - Creating Interview Q&A Card UI
02:45:00 - Creating UI Component to Render AI Response
02:54:41 - Function to Pin Q&A Card to Top of the List
02:57:52 - Function to Generate Concept Explanation Using AI
03:05:11 - Implementing Load More Functionality
03:10:07 - Implementing Delete Session Functionality

Also, check out:

MERN Resume Builder App

MERN Task Manager App

#reactjs #mernstack #reactjstutorial #mernproject

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Thank You.

[hardikpalrecha]

This is my first impression after watching 9 min of videos, Thanks a lot for making this project in javascript instead of typescript and nextjs. Obviously the MERN project I am looking for is the integration of Ai.
Adding in my playlist will jump straight into it after I complete my current project.

[taiwooladosu]

Absolutely loved this tutorial! The way you integrated the Gemini API into a full-stack MERN app was both insightful and practical. I really appreciate the clarity in your explanations and the structure of the project. Would love to see you do a similar walkthrough using TypeScript next, it’d be a great addition for those of us looking to level up with strongly typed code. Keep up the amazing work!

[ArmaanAhmedd]

Need more videos need more such awesome apps broooo,

[CynthiaKaufman-cj]

Great work. Could you please add saas features?

[sumanthprabhu]

Can u explain what is updateuser for in context

[thedamolaoladipo]

Great video!!! How can I get the Figma file? It will make easy to follow with same assets

[sumanthd]

loved your content .. if you don't want to talk atleast you can use voice generation websites like eleven labs.. and also make the font size bigger

[unkownname]

Can i do payment using upi? ..i dont have credit cards

[rhnnwrya]

where to find assets used in the project

[rhnnwrya]

can't figure out the postman request thing i am stuck at 1:24:43
i set the token globally with the latest login token
but when i send the request:

{
"message": "Token failed",
"error": "BC670000:error:0A000438:SSL alert internal alert number 80\n"
}


i am exhausted man... help me out

[kumar_aashish]

Bro give the index.css file code, or assets

[ArmaanAhmedd]

You should remake these videos for explaing what you're coding.

[harishreddy]

Why some tailwind css is notworking for me but it worked for him

[utkarshsolanki]

where to get the images. That hero-image is a very big bullshittery

[yasodauppalapati]

Hii anyone can tell whether we should know ai completely before doing it??

[arsingh]

what happened in 13:59?? how those codes randomly got generated?