From Bangladesh to the world - I build, teach, and share.

Full Stack Developer • Educator • System Architect • Author

👨‍💻 About Me

Hi there! I'm Hasin Hayder, a passionate Full Stack Developer who loves building scalable and performant web applications.
My tech stack includes Alpine.js, Vue.js, React.js, Laravel, Headless Technologies, APIs, RDBMS, WordPress, TailwindCSS, and System Architecture.

I'm the co-founder of HappyMonster, where we developed HappyAddons - one of the most popular Elementor addon libraries with over 400K active installations.
I actively build WordPress plugins, Laravel applications, Shell scripts, and APIs for both product and consumer-facing projects.

Currently, I'm open to work and new opportunities (remote).

When I’m not coding, I enjoy reading books, listening to music, and riding my motorcycle.

⚡ Skills & Expertise

🧩 System Architecture & Design

Experienced in architecting robust, scalable, and maintainable systems, from microservices to monolithic structures. I focus on clean abstractions, modularity, and high availability, ensuring scalability and fault tolerance across environments.

⚙️ Scalable Web Application Development

I build full-stack applications optimized for performance, scalability, and developer productivity, leveraging caching, queueing systems, database optimization, and load balancing for high-traffic environments.

⚡ Skills & Expertise

🧩 System Architecture & Design

Experienced in designing robust and scalable systems that grow with business needs. I focus on creating reliable architectures that handle increased traffic and complexity while maintaining performance.

⚙️ Scalable Web Application Development

I build full-stack applications optimized for growth and performance. I implement smart caching, efficient database practices, and load balancing to ensure applications stay fast and reliable as they grow.

🔗 REST API Development

Expert in creating secure and well-documented APIs that power modern applications. I design APIs that are easy to use, properly secured, and built to handle real-world demands.

🚀 Performance and Security

Dedicated to optimizing performance and strengthening security. I focus on making applications faster while implementing best practices to keep them safe and protected.

🔌 WordPress Plugin Development

As co-founder of HappyMonster, I specialize in building WordPress plugins that are secure, user-friendly, and follow best practices for reliable performance.

🎯 Headless WordPress Development

Skilled in implementing modern WordPress setups where the frontend and backend work independently. This approach enables flexible, fast web applications using WordPress as a content management system.

🌍 What I'm Up To

🎉 Lead Organizer of WordCamp Dhaka 2019 and part of the Program Team for WordCamp Dhaka 2025
🎤 Key Speaker at Web & Data Summit 2024 and DevConf 2024, delivering sessions on Laravel, JavaScript & WordPress
🧠 Currently creating courses on Alpine.js and WordPress Security
🧩 Building Eazy Plugin Manager to redefine plugin management for WordPress admins
🚀 Developing PainlessWP, a truly painless managed WordPress hosting service
🌱 Lifelong learner - every day brings new lessons
👯 Open to remote work and relocation opportunities
💬 Ask me about Vue.js, React.js, Alpine.js, PHP, Laravel, WordPress, and REST API Development
😄 Pronouns: He/Him - Fat & Happy
🏍️ Fun fact: I love cooking, singing, and traveling on my motorcycle
📚 Author of: "Object Oriented Programming with PHP", "WordPress Complete", "Facebook App Development", and "Smarty"
🧰 Tools I love: VSCode, Insomnia, Beekeeper Studio, Markdown Editors, Spotify, Docker, and ZSH with PowerLevel10K
📰 Creator of the newsletter Developers Treasure Chest - weekly curated dev resources
👥 Community builder: Admin of WordPressians, Talk.js, phpXperts, and Laravel Bangladesh