Mahmudul Hasan

I’m a Full-Stack Developer with 2+ years of experience building end-to-end MERN applications—from REST API design and JWT authentication to complex React.js frontends. I also served as a founding frontend engineer at an EdTech startup, owning 70–80% of the initial product.

I specialize in turning messy prototypes into scalable systems. I refactored the entire codebase—eliminating deep prop-drilling and introducing Redux Toolkit to create a reusable component library, and I integrated an AI-powered assignment review via a third-party API.

On product delivery, I’ve shipped complex UI features like floating comment annotations beside a rich-text editor, a drag-and-drop file manager with reordering, and a student portfolio builder. As a Fiverr Level 1 Seller with a 5-star rating and 100% on-time delivery, I independently handled full project lifecycles for international clients.

I’m at my best when I can own architecture end-to-end. My projects include a real-time chat & social app using Next.js/TypeScript, Socket.io, JWT auth, and a social graph, plus a MERN e-commerce platform with Node.js/Express.js, normalized MongoDB schema (Mongoose ODM), and RBAC across a real-time dashboard.