Junior Software Developer • Bangladesh

I craft delightful web & mobile products

Hey, I'm Md Kawsar Islam Yeasin — a front-end-focused full-stack dev with ~2 years shipping production apps in TypeScript, React, Next.js, React Native, and Node. I obsess over UI polish, APIs, state, and scalable architecture.

See my work →Resume / CV

Years building shipped products

10+

Client & freelance projects delivered

622+

GitHub stars across open source

AI integrations shipped to prod

✦ About me

Curious builder, careful shipper

I'm a front-end-focused full-stack developer with almost 2 years of industry experience. I build web and mobile apps with TypeScript, React, Next.js, React Native, and Expo.

I contribute to open source — 622+ GitHub stars overall — and enjoy AI-driven workflows, agent-based development, close client collaboration, and maintainable freelance & contract work.

Focus: Front-end-focused full-stack
Stack: TypeScript • React • Next.js
Mobile: React Native + Expo
Backend: Node • Express • Mongo • Postgres

✦ Experience

Where I've shipped things

Software Developer @ Techfosys

Jul 2025 — Present • Remote

Currently here

▸Integrated AI API endpoints, collaborating closely with backend devs for seamless delivery.
▸Met with foreign clients, gathered requirements, and translated them into delivery plans.
▸Delivered 5+ client projects with strong W3C and cross-browser standards.

Next.jsReactTypeScriptNode.jsMongoDBSentry

Full Stack Developer @ Freelance & Contract

2024 — Present • Remote

Currently here

▸Worked with agencies and indie devs across freelance and contract projects.
▸Built TypeScript-first web and mobile apps; collaborated with backend devs and clients.
▸Kept codebases modular, performant, and a joy to maintain.

Next.jsReact NativeExpoReduxPostgreSQLFigma

Frontend Developer @ Neonency

Dec 2023 — Sep 2024 • Remote

▸Optimized frontend performance and improved overall UX across products.
▸Built responsive layouts and fixed unnecessary re-rendering across the app.
▸Improved Lighthouse scores by 10–20 points, targeting 90+ wherever feasible.

ReactJavaScriptTailwind CSSReduxVercel

✦ Selected work

Things I've built lately

01 / 03↗

Port a Vacation

Vacation rental & property management for a USA client. Dynamic search, filters, and rich property pages.

Next.jsTypeScriptTailwindNodeMongoDB

02 / 03↗

Wiiz AI

AI-based job marketplace for a German client. Strict Biome.js linting, 50+ issues fixed, ongoing production support.

Next.jsTypeScriptReduxExpressshadcn/ui

03 / 03↗

Glowmi.net

AI-powered skincare e-commerce with full English LTR and Arabic RTL support. Clean, scalable storefront and admin.

Next.jsTypeScriptReduxTailwindshadcn/ui

✦ Toolbox

The stack I reach for daily

TypeScriptReactNext.jsReact NativeExpoTailwind CSSNode.jsExpressReduxMongoDBPostgreSQLshadcn/uiFigmaVercelSentry

“

A man who is master of patience is master of everything else.

— George Savile

✦ Let's build something

You made it this far — let's talk about your next project.

Open to freelance, agency partnerships, and product builds across web, mobile, and AI-driven workflows.

mdkawsarislam2002@gmail.com →Book a 15-min intro

GitHub ↗LinkedIn ↗X ↗Email ↗