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Hi, I'm Ahmad Shajahan

Senior Software Engineer & Founder of MrCode

I build scalable backend systems, cross-platform mobile apps, and AI-powered solutions. Passionate about creating impactful software and sharing knowledge through my YouTube channel.

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About Me

Ahmad Shajahan

Senior Software Engineer & Founder of MrCode

I'm a passionate software engineer with deep expertise in Java & Spring Boot, Python/Django, and cross-platform mobile development (Flutter, React Native). I'm also an expert in Data Structures and Algorithms with a strong foundation in system design and scalable API development.

I've built and shipped production-grade web and mobile apps, implemented AI/ML features using PyTorch, and created modern front-ends with React/Next.js. As the creator of MrCode, I'm also an educator on YouTube, sharing engineering best practices with the developer community.

I'm currently seeking high-impact backend/platform or full-stack roles at world-class companies where I can contribute my technical expertise and problem-solving skills to build innovative solutions.

Java & Spring Boot Expert
Full-Stack Developer
AI/ML Enthusiast
Mobile App Developer
DSA Specialist
Tech Educator

Full Name

Ahmad Shajahan (Mr Code)

Phone

+91 80890 21973

Email

ahmadshajahan3000@gmail.com

Location

India

Technical Skills

I've worked with a wide range of technologies across the full stack. Here are the key skills I bring to the table.

Backend

Java 17+ Spring Boot Spring Security JPA/Hibernate REST APIs WebSockets Microservices JWT/OAuth2 Python Django DRF Node.js Express

Frontend

React Next.js Redux RTK TypeScript JavaScript HTML5 CSS3 Tailwind Bootstrap Vite Webpack

Mobile

Flutter Dart React Native Android Kotlin Firebase Offline Sync Push Notifications BLoC Provider GetX

Database

PostgreSQL MySQL SQLite MongoDB Firestore Schema Design Migrations Indexing Query Tuning ORMs

AI/ML

PyTorch TensorFlow Model Training Inference Data Pipelines NLP Computer Vision Scikit-learn Pandas NumPy

DevOps

Git GitHub CI/CD Docker Kubernetes Linux Nginx AWS GCP Azure Firebase

Other

DSA System Design Clean Architecture Design Patterns SOLID Testing JUnit PyTest Code Review Agile Scrum

Skill Proficiency

Java & Spring Boot 95%
Python & Django 90%
Flutter 85%
React/Next.js 80%
Database Design 88%
AI/ML (PyTorch) 75%
DevOps 70%
System Design 85%

Work Experience

Founder & Lead Engineer

Remote, India — [Year]–Present

Lead end-to-end delivery of web/mobile products for clients and internal ventures: requirements, architecture, implementation, CI/CD, and deployment.

  • Built secure Spring Boot backends with JWT/OAuth2, JPA/Hibernate, and PostgreSQL/MySQL; exposed REST APIs and real-time features via WebSockets.
  • Developed rich front-ends using React/Next.js and TypeScript; implemented dashboards, data visualizations, role-based access, and responsive UI.
  • Shipped mobile apps in Flutter and React Native (authentication, offline sync, notifications, and API integration).
  • Created AI-powered features using PyTorch (classification/inference), integrated with Python services and web/mobile clients.
  • Containerized services with Docker; automated builds with GitHub Actions; deployed on Linux servers with Nginx reverse proxy.
  • Taught programming concepts and full-stack development via the MrCode YouTube channel and live sessions; authored reusable templates and starter kits.

YouTube Creator & Community Educator

Remote, India — [Year]–Present

Produce tutorials on Java/Spring Boot, Django, Flutter, DSA, and system design; maintain sample repos and starter projects for learners.

  • Built educational, interactive demos and micro-projects for rapid concept adoption and interview prep.
  • Created comprehensive learning paths for full-stack development and competitive programming.
  • Developed open-source starter kits and templates for various tech stacks.
  • Engaged with a community of over [X] developers through tutorials and live coding sessions.

Featured Projects

Here are some of my most notable projects that showcase my skills and expertise.

HAEF-OS

HAEF-OS

Emotion-Aware JavaFX OS (R&D)

Human-AI interaction system with emotion-adaptive UI, voice control, notification center, and modular apps.

Java JavaFX Python PyTorch ASR/TTS
Live Code
Doctors Management System

Doctors Management System

Healthcare Management Platform

Comprehensive system for managing appointments, EMR-style records, prescriptions, billing, and analytics.

Spring Boot Django REST PostgreSQL React Flutter
Live Code
Retail Billing System

Retail Billing System

Inventory & POS Solution

Complete retail solution with SKU catalog, invoicing, barcode workflows, low-stock alerts, and GST-style tax.

Spring Boot React PostgreSQL MySQL Barcode
Live Code
Nexsou

Nexsou

Interior Design Platform

Marketing & innovation portal with CMS, galleries, and contact pipelines for interior design services.

Next.js React Node.js Django PostgreSQL
Live Code
MrCode AI Site

MrCode AI Site

AI/ML Teaching Hub

Teaching hub for AI/ML concepts with interactive projects, demos, and educational materials.

Next.js React Python PyTorch Jupyter
Live Code
JS Projects Collection

JS Projects Collection

Interactive JavaScript Showcases

Collection of interactive JavaScript projects including dashboards, utilities, and UI components.

JavaScript HTML5 CSS3 APIs React
Live More Code
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Get In Touch

Have a project in mind or want to discuss potential opportunities? Feel free to reach out!

Send Me a Message

Contact Information

Feel free to reach out to me through any of the channels below. I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.

Email

ahmadshajahan3000@gmail.com

Phone

+91 80890 21973

Location

India

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