Nithin's Portfolio Logo Nithin Sai

Selected Work — 05

Things I've
built.

A mix of what I'm shipping right now, and what got me here.

Habit tracker preview In active development
01

Habit Tracker

A MERN habit tracker built around a full-year, GitHub-style contribution grid — click any day to log a note, watch streak logic update in real time. Backend routes were specifically audited and patched against IDOR vulnerabilities, with dark/light theme support throughout.

React MongoDB JWT Auth Node + Express
Live — coming soon GitHub ↗
Market Pulse preview
02

Market Pulse

Live stock and crypto tracker pulling real-time prices from a financial API. Green-for-gains, red-for-losses UI, with stock and crypto lookups handled through the same search flow.

Node.js Express.js EJS
Live ↗ GitHub ↗
Blog App preview
03

Blog App

Full-stack CRUD blog — create, edit, and delete posts against a real database, not local state. Built to nail the core data operations before adding any UI polish on top.

Node.js Express.js EJS
Live ↗ GitHub ↗
Portfolio preview
04

This Portfolio

The site you're on. Hand-built with HTML, CSS, and Bootstrap 5 — no template — with a shared component system across every page and animations tuned to not get in the way.

HTML & CSS Bootstrap 5
Live ↗ GitHub ↗
Calculator preview
05

Calculator

A vanilla JS calculator — no frameworks, no libraries. Built early on to get comfortable with DOM manipulation and event handling from scratch.

HTML CSS Vanilla JS
Live ↗ GitHub ↗