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Md Sadrul Hasan Dider
Open to entry-level roles

I build full-stack apps — MERN, Android and IoT.

$ > building MERN apps · Android apps · IoT systems · REST APIs

Full Stack Developer specializing in the MERN stack, Android apps and IoT systems — based in Gazipur, Bangladesh.

MERNAndroidIoT
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dider@portfolio:~online
whoami. { name: "Md Sadrul Hasan Dider", role: "Full Stack Developer" }. projects --live. 2 verified builds found 1. Doc Appoint — Doctor Appointment Booking 2. Keen Keeper — Friendship tracker. stack --current. ["React.js", "Node.js", "Express.js", "MongoDB", "Tailwind CSS", "JWT"]. status --json. { availability: "open_to_work", location: "Gazipur, Bangladesh" }

$ git log --featured

Featured work

Live apps I have shipped — doctor booking and a friendship dashboard.

./projects/See all →
Doc Appoint — Doctor Appointment Booking

$ inspect ./doc-appoint

LiveMay 31, 2025

Doc Appoint — Doctor Appointment Booking

Full-stack booking app where patients browse specialists and book slots — JWT-backed client and Express server.

role="Solo full-stack developer"

demo="online"

React.jsNode.jsExpress.jsMongoDBTailwind CSSJWT
Live demo →
Keen Keeper — Friendship tracker

$ inspect ./keen-keeper

LiveApr 30, 2025

Keen Keeper — Friendship tracker

React dashboard to keep close friends in view — add contacts, log interactions, and see who is on track or needs attention.

role="Solo frontend developer"

demo="online"

React.jsViteTailwind CSSRecharts
Live demo →
$ portfolio --status

Technologies

technologies="15+"

Live products

live_projects="2"

Auth & APIs

auth="JWT"

Status

status="Available"

$ stack --list --grouped

🛠️ Tech Stack

frontend.dependencies

🌐 Frontend
HTML5
CSS3
JavaScript
React
Next.js
Tailwind CSS

backend.dependencies

⚙️ Backend & Database
Node.js
Express.js
PHP
MongoDB
MySQL

mobile.dependencies

📱 Mobile & IoT
Android Studio
Java
Kotlin
Flutter
Arduino

tools.dependencies

🛠️ Tools & Platforms
Git
GitHub
VS Code
Postman
cPanel
Vercel

What I do

MERN stack

React.js, Next.js, Node.js, Express.js, MongoDB — JWT auth, REST APIs and responsive UIs.

Product apps

Doctor booking with JWT, React dashboards, and real CRUD flows.

Android & IoT

Android (Java & Kotlin), Flutter, embedded systems and microcontrollers from electronics training.

Latest writing

Notes on the apps I actually shipped.

All posts →
Jun 11, 2026·1 min read

JWT roles on Doc Appoint

How I split a React client and an Express API so appointment booking is not a public POST.

May 19, 2026·1 min read

Building the Keen Keeper dashboard

A Vite + React friendship tracker with On Track states, interaction counts, and Recharts — not a finance app.

Have an idea? Let's ship it.

Based in Gazipur. Remote-friendly. Let's ship something real.

Start a project