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mahmudulmkdev

Mahmudul Hasan

@mahmudulmkdev

SaaS Developer Software Development and Web App Expert

Bangladesh
English
About me
Got an app idea but not sure where to start? I help founders and businesses turn ideas into fully working SaaS products and web apps — fast, clean, and built to scale. With 4+ years of full-stack experience, I've shipped 20+ projects across healthcare, EdTech, and e-commerce — from MVPs to production-grade platforms. What you get working with me: → Complete SaaS or web app from scratch → Secure auth, payments & dashboards → Clean code, fast delivery, no surprises Message me your idea — I'll reply with a free project outline within 24 hours.... Read more

Skills

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mahmudulmkdev
Mahmudul Hasan
Offline • 

See my services

Full Stack Web Applications
I will be your expert software developer for custom solutions
From$90 / projectMore details
Custom Websites
I will build your saas mvp with nextjs, nodejs, auth and payments
From$150 / projectMore details

Portfolio

Work experience

Full Stack Developer

LeoPhoenix Tech • Full-time

Dec 2021 - Present • 4 yrs 7 mos

Developed and maintained full-stack web applications using React, Next.js, Node.js, and Express, handling both frontend UI and backend logic. Designed and maintained REST APIs and tRPC endpoints, ensuring clear API contracts and smooth data flow between frontend and backend. Implemented JWT-based authentication and role-based access control, including admin, user, and guest permission layers. Built database structures using MongoDB and PostgreSQL, applying Prisma ORM for relational data modeling and Mongoose for document-based collections. Integrated Firebase for authentication, notifications, and real-time data updates in key modules. Implemented payment workflows, including order processing, verification, and status management with third-party payment gateways. Built reusable UI components using Tailwind CSS, Shadcn UI, Chakra UI, Bootstrap, and MUI, ensuring design consistency and fast development. Used Redux Toolkit for state management, improving app performance and reducing bugs. Improved app performance using: code splitting lazy loading API optimization cache strategies Used Git, Docker, AWS, Vite, and Postman for development, testing, deployment, and version control. Worked closely with designers and product managers to turn requirements into functional features with clean UX and stable performance.