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@koushikkarmakar

Koushik Karmakar

@koushikkarmakar

Software Developer | Full-Stack MERN Developer

Kolkata, West BengalJoined December 2025

About

React, Node, Express, Fastify | PostgreSQL, MySQL, MongoDB | REST API, Git | HTML, CSS, PHP, JavaScript | Bootstrap, TailwindCSS

Available for

Freelance work, Full Time job

Koushik Karmakar's blogs

DNS Work Processdnsworkprocess.hashnode.dev1 post

Hardware Networking Systemhardware-networking-system.hashnode.dev1 post

DNS Recordsdns-records-by-koushik.hashnode.dev1 post

cURL for Beginnerscurl-for-beginners-by-koushik.hashnode.dev1 post

Why Version Control Existswhy-version-control-exists-by-koushik.hashnode.dev1 post

About

React, Node, Express, Fastify | PostgreSQL, MySQL, MongoDB | REST API, Git | HTML, CSS, PHP, JavaScript | Bootstrap, TailwindCSS

Available for

Freelance work, Full Time job

Koushik Karmakar's blogs

DNS Work Processdnsworkprocess.hashnode.dev1 post

Hardware Networking Systemhardware-networking-system.hashnode.dev1 post

DNS Recordsdns-records-by-koushik.hashnode.dev1 post

cURL for Beginnerscurl-for-beginners-by-koushik.hashnode.dev1 post

Why Version Control Existswhy-version-control-exists-by-koushik.hashnode.dev1 post

Articles Threads Comments

Recently published

KKKoushik Karmakarinjavascrip-tmodules-import-export-by-koushik.hashnode.dev

JavaScript Modules: Import and Export

15h ago · 4 min read · As JavaScript applications grow, managing code in a single file becomes messy and hard to maintain. This is where JavaScript modules come in. JavaScript modules are a method to organize and structure

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KKKoushik Karmakarinobject-oriented-programming-in-javascript-by-koushik.hashnode.dev

Object-Oriented Programming in JavaScript for Beginners

Mar 15 · 9 min read · In this article we're going to review the main characteristics of object oriented programming (OOP) with practical JavaScript examples. A) What is Object-Oriented Programming? OOP is very useful on la

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KKKoushik Karmakarinarrow-functions-in-javascript-by-koushik.hashnode.dev

Arrow Functions in JavaScript: A Simpler Way to Write Functions

Mar 13 · 4 min read · In this article we will understand what is arrow function and how it work in modern development to make developer life easy and flexible. A) What arrow functions are? Arrow functions are a shorter, c

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KKKoushik Karmakarinfunction-declaration-vs-function-expression-koushik.hashnode.dev

Function Declaration vs Function Expression: What’s the Difference?

Mar 12 · 6 min read · Functions are one of the most important concepts in JavaScript. Almost every JavaScript application—from small scripts to large web apps—relies heavily on functions. When creating functions, you can u

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KKKoushik Karmakarinobjects-in-javascript-by-koushik.hashnode.dev

Understanding Objects in JavaScript

Mar 11 · 4 min read · In this article we will discuss about Object in javascript. JavaScript objects are one of the most important data structures in web development. They allow developers to organize data in a structured

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