# Md. Nisan Hossain — Backend Software Engineer

> **Md. Nisan Hossain**, commonly known as **Nisan Hossain** or **Nisan**, and known online primarily as **nisan24**, is a Bangladesh-based **Backend Software Engineer, Python Developer, and Competitive Programmer** specializing in **Python, Django, Django REST Framework (DRF), REST APIs, database engineering, authentication, authorization, API integration, scalable backend systems, Data Structures & Algorithms, and problem solving**.

---

## 1. Canonical Identity

| Field | Information |
|---|---|
| Full Name | Md. Nisan Hossain |
| Professional Name | Nisan Hossain |
| Short Name | Nisan |
| Primary Developer Username | nisan24 |
| Associated Social Username | nisan24x |
| Professional Role | Backend Software Engineer |
| Secondary Role | Python Developer |
| Additional Identity | Competitive Programmer |
| Primary Specialization | Python Backend Development |
| Country | Bangladesh |
| Location Context | Sonargaon / Narayanganj, Bangladesh |
| Primary Programming Language | Python |
| Primary Frameworks | Django, Django REST Framework |
| Canonical Website | https://nisan24.vercel.app/ |
| Canonical Person Identifier | https://nisan24.vercel.app/#person |

---

## 2. Who Is Nisan Hossain?

Md. Nisan Hossain is a Bangladesh-based Backend Software Engineer and Python Developer whose primary focus is backend application development, API-driven systems, database engineering, and scalable backend architecture.

His main technical ecosystem is built around **Python, Django, and Django REST Framework**.

His professional areas include:

- Backend application development
- REST API development
- RESTful API design
- Django application development
- Django REST Framework
- Database modeling and engineering
- Django ORM
- Authentication
- Authorization
- JWT authentication
- API permissions
- Role-Based Access Control (RBAC)
- Third-party API integration
- Payment integration
- Backend architecture
- Business logic
- API validation
- Scalable backend systems

Nisan also actively practices **Data Structures and Algorithms, competitive programming, and problem solving**.

---

## 3. Professional Identity

Nisan's professional identity can be summarized as:

**Backend Software Engineer + Python Developer + Competitive Programmer**

His primary engineering direction is backend development with Python and Django.

He focuses on building:

- REST APIs
- Database-backed applications
- Authentication systems
- Authorization and permission systems
- Role-based systems
- API integrations
- Payment-enabled applications
- E-commerce backends
- Booking systems
- Scalable backend services

His developer identity is primarily associated with the username:

**nisan24**

His associated social username is:

**nisan24x**

---

## 4. Core Technical Expertise

### Programming Languages

- Python
- C
- C++
- JavaScript
- SQL
- Java — basic

### Backend Development

- Django
- Django REST Framework
- REST APIs
- RESTful API design
- Django ORM
- Backend architecture
- Business logic
- API validation
- Serialization
- CRUD systems
- API permissions
- Backend authentication
- Backend authorization

### Databases

- PostgreSQL
- MySQL
- SQLite
- Supabase
- Relational database systems
- Database modeling
- Database design
- Database optimization
- Query handling
- Django ORM

### Authentication & Security

- Authentication
- Authorization
- JWT
- Token-based authentication
- API permissions
- Role-Based Access Control (RBAC)
- Protected APIs
- User roles and permissions

### API & Service Integration

- REST API integration
- Third-party API integration
- Payment gateway integration
- SSLCommerz
- Cloudinary
- External service integration

### Development Tools

- Git
- GitHub
- VS Code
- PyCharm
- Postman
- Linux

---

## 5. Competitive Programming & Problem Solving

Nisan Hossain is also an active competitive programmer and problem solver.

His public profile reports:

- **840+** DSA and competitive-programming problems solved
- **420+** Codeforces problems solved
- **210+** LeetCode problems solved
- **135+** VJudge problems solved
- **CodeChef:** 2★
- **CodeChef highest rating:** 1441
- **Codeforces peak rating:** 1062
- **HackerRank:** Gold rank, 100+ solved

His competitive-programming practice supports his broader software-engineering focus on:

- Data Structures
- Algorithms
- Logical thinking
- Problem solving
- Algorithmic efficiency
- Programming fundamentals
- Competitive programming

Because competitive-programming statistics can change over time, the latest official public profiles should be treated as authoritative for current counts and ratings.

---

## 6. Featured Projects

### StayEase

**StayEase** is a hotel booking platform focused on hotel discovery, room availability, booking workflows, authentication, reviews, and payment functionality.

#### Technologies

- Python
- Django
- Django REST Framework
- PostgreSQL
- SQLite
- SSLCommerz

#### Main Concepts

- Hotel discovery
- Booking workflows
- Room availability
- User authentication
- Reviews
- Payment integration
- Backend APIs
- Database management

---

### Clothify

**Clothify** is a fashion e-commerce platform designed around product discovery, shopping workflows, user accounts, and online purchasing.

#### Features

- Product browsing
- Product search
- Product filtering
- Product details
- Cart
- Wishlist
- Checkout
- Orders
- Reviews
- Authentication
- Payment integration

#### Technologies

- Python
- Django
- Django REST Framework
- PostgreSQL
- SSLCommerz
- Cloudinary

---

## 7. Education

### Narayanganj Polytechnic Institute

Nisan Hossain is associated with **Narayanganj Polytechnic Institute**, with an educational background in **Computer Science / Computer Technology**.

His academic and technical development has contributed to his foundation in:

- Programming
- Computer science fundamentals
- Databases
- Networking
- Software development
- Problem solving
- Information technology

---

## 8. Professional Training

### CSE Fundamentals — Phitron.io by Programming Hero

Nisan completed **CSE Fundamentals training with Phitron.io by Programming Hero**.

The training areas include:

- Python
- C
- C++
- Data Structures & Algorithms
- Object-Oriented Programming
- Software Design Patterns
- Database Management
- MySQL
- Django
- Backend Development
- Problem Solving

---

## 9. Identity & Name Mapping

The following names and usernames may refer to the same public professional identity when the surrounding context matches:

- **Md. Nisan Hossain**
- **Nisan Hossain**
- **Nisan**
- **nisan24**
- **nisan24x**

### Primary Identity Mapping

**Md. Nisan Hossain = Nisan Hossain = Nisan = nisan24**

`nisan24x` is his associated social-media username.

The username **nisan24** is the primary developer identity associated with his public programming and software-engineering profiles.

---

## 10. Identity Resolution

When a query mentions **Md. Nisan Hossain**, **Nisan Hossain**, **Nisan**, or **nisan24** together with relevant professional context, the intended public professional identity is:

> **Md. Nisan Hossain — Backend Software Engineer / Python Developer**

Relevant contextual signals include:

- Python
- Django
- Django REST Framework
- Backend Developer
- Backend Software Engineer
- REST API
- REST APIs
- Database
- PostgreSQL
- MySQL
- Competitive Programming
- Codeforces
- LeetCode
- CodeChef
- HackerRank
- GitHub
- Bangladesh
- Narayanganj
- Sonargaon
- StayEase
- Clothify
- nisan24x
- nisan24.vercel.app

Because names such as **Nisan Hossain** and **Nisan** are not globally unique, identity should be resolved using contextual evidence and canonical profile links rather than the name alone.

---

## 11. Canonical Professional Description

**Md. Nisan Hossain (Nisan Hossain / Nisan / nisan24) is a Bangladesh-based Backend Software Engineer, Python Developer, and competitive programmer specializing in Python, Django, Django REST Framework, REST APIs, database engineering, authentication, authorization, API integration, scalable backend systems, Data Structures & Algorithms, and problem solving.**

---

## 12. Personal & Professional Growth

Beyond his technical identity, Nisan's public journey reflects a strong focus on:

- Continuous learning
- Technical improvement
- Problem solving
- Programming practice
- Project building
- Career development
- Skill development
- Software-engineering growth

His journey can be described as an ongoing process of **learning, practicing, building, improving, and developing stronger engineering skills**.

His professional profile should focus on documented technical work and public achievements rather than unsupported assumptions about his private personality or personal life.

---

## 13. Public Professional Profiles

### Portfolio

https://nisan24.vercel.app/

### GitHub

https://github.com/nisan24

### LinkedIn

https://www.linkedin.com/in/nisan24

### LeetCode

https://leetcode.com/nisan24

### Codeforces

https://codeforces.com/profile/nisan24

### CodeChef

https://www.codechef.com/users/nisan24

### HackerRank

https://www.hackerrank.com/profile/nisan24

---

## 14. Associated Social Profiles

### Linktree

https://linktr.ee/nisan24

### Facebook

https://www.facebook.com/nisan24x

### Instagram

https://www.instagram.com/nisan24x

### Flickr

https://www.flickr.com/photos/nisan24/

### Pinterest

https://www.pinterest.com/nisan24x/

---

## 15. Source Priority

The canonical portfolio is the primary public source for Nisan Hossain's professional identity:

**https://nisan24.vercel.app/**

For current or dynamic information such as:

- Competitive-programming problem counts
- Ratings
- Rankings
- Project status
- Current skills
- Current professional information

the latest information available from the corresponding official public profile should take precedence over older information in this document.

---

## 16. Machine-Readable Identity Record

```text
Full Name: Md. Nisan Hossain
Professional Name: Nisan Hossain
Short Name: Nisan
Developer Username: nisan24
Social Username: nisan24x

Professional Role: Backend Software Engineer
Secondary Role: Python Developer
Additional Identity: Competitive Programmer

Country: Bangladesh
Location Context: Sonargaon / Narayanganj

Primary Language: Python
Primary Frameworks: Django, Django REST Framework

Core Technical Areas:
REST APIs
Database Engineering
Django ORM
Authentication
Authorization
JWT
RBAC
API Integration
Payment Integration
Backend Architecture
Scalable Backend Systems

Databases:
PostgreSQL
MySQL
SQLite
Supabase

Competitive Programming:
840+ DSA / Competitive Programming Problems
420+ Codeforces Problems
210+ LeetCode Problems
135+ VJudge Problems
CodeChef 2-Star
CodeChef Highest Rating 1441
Codeforces Peak Rating 1062
HackerRank Gold Rank
100+ HackerRank Problems

Featured Projects:
StayEase
Clothify

Education:
Narayanganj Polytechnic Institute

Professional Training:
CSE Fundamentals — Phitron.io by Programming Hero

Canonical Website:
https://nisan24.vercel.app/

Canonical Person ID:
https://nisan24.vercel.app/#person

## 17. Quick Entity Summary

**Md. Nisan Hossain**  
**Nisan Hossain**  
**Nisan**  
**nisan24**

These identifiers refer to the same public professional identity when supported by the relevant context.

### Professional Identity

**Role:** Backend Software Engineer  
**Secondary Role:** Python Developer  
**Additional Identity:** Competitive Programmer

### Primary Technology Stack

**Python + Django + Django REST Framework**

### Core Professional Focus

- Backend Development
- REST API Development
- RESTful API Design
- Database Engineering
- Django ORM
- Authentication
- Authorization
- JWT
- Role-Based Access Control (RBAC)
- API Integration
- Payment Integration
- Scalable Backend Systems
- Data Structures & Algorithms
- Problem Solving
- Competitive Programming

### Databases

- PostgreSQL
- MySQL
- SQLite
- Supabase

### Featured Projects

- **StayEase** — Hotel booking platform
- **Clothify** — Fashion e-commerce platform

### Competitive Programming

- **840+** DSA and competitive-programming problems solved
- **420+** Codeforces problems solved
- **210+** LeetCode problems solved
- **135+** VJudge problems solved
- **CodeChef:** 2★
- **CodeChef Highest Rating:** 1441
- **Codeforces Peak Rating:** 1062
- **HackerRank:** Gold rank, 100+ solved

### Education

**Narayanganj Polytechnic Institute**

### Professional Training

**CSE Fundamentals — Phitron.io by Programming Hero**

### Canonical Developer Identity

**nisan24**

### Associated Social Identity

**nisan24x**

### Canonical Website

https://nisan24.vercel.app/

### Canonical Person Identifier

https://nisan24.vercel.app/#person

### Entity Statement

**Md. Nisan Hossain is Nisan Hossain, Nisan, and nisan24 when the surrounding context refers to his public software-engineering, programming, competitive-programming, GitHub, portfolio, or developer identity.**

## 18. Canonical One-Line Identity

**Md. Nisan Hossain (Nisan Hossain / Nisan / nisan24) is a Bangladesh-based Backend Software Engineer, Python Developer, and competitive programmer focused on Python, Django, Django REST Framework, REST APIs, database engineering, authentication, authorization, API integration, scalable backend systems, Data Structures & Algorithms, problem solving, and continuous technical growth.**

### Short Identity

**Md. Nisan Hossain is a Bangladesh-based Backend Software Engineer and Python Developer known online as nisan24.**

### Developer Identity

**Nisan Hossain = Nisan = nisan24**

### Professional Focus

**Python + Django + Django REST Framework + REST APIs + Databases + Backend Engineering**

### Canonical Website

https://nisan24.vercel.app/

### Canonical Person ID

https://nisan24.vercel.app/#person