How I Built My First MERN Stack Project as a Competitive Programmer

Sure! Here's a ready-to-use blog body for your first Hashnode blog post, based on your skills as a MERN stack developer and competitive programmer.
As someone deeply involved in competitive programming, I’ve always loved solving algorithmic problems and writing efficient code. But I wanted to take my skills to the next level — by building something real that people could actually use.
That’s when I decided to dive into MERN stack development and create my first full-stack project.
Why I Chose MERN Stack
MERN stands for:
MongoDB: NoSQL database to store data in flexible JSON-like format.
Express.js: Lightweight framework to build backend APIs.
React.js: Frontend library for building fast, interactive UIs.
Node.js: JavaScript runtime for building the server-side logic.
I chose MERN because:
It’s JavaScript end-to-end.
It’s beginner-friendly but powerful enough to build serious apps.
It’s widely used in startups and big companies alike.
Project Overview
For my first MERN project, I built a simple web app where users can:
Register/Login (Authentication)
Create and view posts
Like or delete their own posts
It’s like a mini blogging or note-taking app — a great starter project.
Tech I Used
Frontend: React, Tailwind CSS (for styling), Axios
Backend: Express.js, Node.js, JWT for authentication
Database: MongoDB (with Mongoose ODM)
Hosting: Render (backend), Vercel (frontend), MongoDB Atlas (cloud DB)
Challenges I Faced
Connecting frontend to backend: Learning to handle CORS, Axios requests, and API structure took some time.
Authentication: Implementing secure login using JWTs was tricky but super rewarding.
Deployment: Figuring out how to deploy both frontend and backend on different platforms was a new experience.
What I Learned
How a full-stack app works end-to-end.
REST API design and calling backend from React.
Real-world debugging and fixing console errors 😅
Importance of writing clean, modular code.
What’s Next?
Add file uploads and user profile pictures.
Refactor the code using TypeScript.
Learn how to use Redux or Zustand for better state management.
Final Thoughts
Switching from solving coding problems to building full-stack projects opened up a whole new dimension for me. It’s incredibly satisfying to bring an idea to life and see it working in a browser.
If you’re a competitive programmer like me and want to get into development, start building — even small projects will teach you a ton.
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