I build fast, scalable web apps with React and Next.js, from AI-powered platforms to booking systems and dashboards.
I am Jahirul Islam, a frontend developer from Dhaka, Bangladesh, with 2.5+ years of experience in React.js, Next.js and the modern JavaScript ecosystem.
At Qtec Solution Limited I build scalable web apps from architecture to deployment: AI-powered education features, vehicle service booking, healthcare portals and e-commerce tools. I work a lot with Redux Toolkit and RTK Query, API integrations and performance tuning, and I am familiar with Node.js, Express and MongoDB on the backend.
I like keeping things minimal: less code, fewer dependencies, and interfaces that load fast and are easy to use. I am always open to good projects and conversations, so feel free to get in touch.
Feb 2023 – Present
Northern University Bangladesh
Oct 2026 – Present
Barguna Polytechnic Institute, Barguna
2016 – 2020
Dema Gulishakhali Hakimia High School, Barguna
2015 – 2016
AI-powered education platform with a chat assistant, live scheduling and a personal content library. Built course modules and live event scheduling with Next.js and Redux Toolkit.
Vehicle maintenance platform with online booking and vendor dashboards. Built service tracking, appointment booking and real-time status updates across customer and vendor panels.
Healthcare platform for doctor consultations, diagnostic test bookings and online medical reports. Built consultation scheduling, package booking with search filters and patient report portals.
Visa consultancy platform for student, spouse and visitor visas plus migration services. Built appointment booking and university liaison request portals with fast, mobile-friendly pages.
Placeholder description. Replace with a side project you built on your own: what it does and why you made it.
Placeholder description. Mention one thing you learned or are proud of in this project.
Placeholder one-line description of a smaller side project.
JavaScript
Ongoing · 2026
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Published · 2025
Placeholder Journal / Conference
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ReadResource-based routes, the right status codes, zod validation and one central error handler: a small structure that scales.
Backend · 4 min read · #express #node #rest-api #zod
Group code by feature instead of by file type, give each feature a public API, and keep imports flowing in one direction.
Architecture · 2 min read · #folder-structure #react #scalability
Where the 'use client' boundary goes, what crosses it, and how to keep most of your app on the server.
Next.js · 3 min read · #app-router #react-server-components #performance
Have a project or a question? Send a message below or email me directly at mrjahir207@gmail.com.