📍 Sirajganj, Bangladesh · 💼 Full Stack Engineer @ Xubitar · 💻 4+ years building scalable, secure, high-performance web apps

Software Engineer with 4+ years of experience designing, building, and maintaining scalable, secure, and high-performance web applications.

• Specializes in frontend engineering with React, Next.js, and Vue/Nuxt, with strong full-stack capabilities across Node.js, Express.js, REST APIs, and SQL / NoSQL databases
• Proven track record delivering production-grade systems across eCommerce, healthcare, education, CMS, and digital archiving
• Skilled in third-party API integration, legacy codebase modernization, and engineering best practices in Agile teams
• Currently building scalable React/Next.js frontends, Node.js / Express.js + Prisma + PostgreSQL backends, and Shopify-based eCommerce (Shopify apps, inventory systems) at Xubitar
• Passionate about solving real-world problems and shipping impactful, user-focused products

Full Stack Engineer — Xubitar Jul 2026 – Present

• Design, develop, and maintain production-grade eCommerce applications using React.js, Next.js, Express.js, Node.js, Prisma, and PostgreSQL
• Build and maintain Shopify-based eCommerce applications — Shopify apps using Shopify Admin API, Storefront API, and webhooks
• Build inventory management systems with stock tracking, low-stock alerts, purchase/sales flows, and reporting
• Build scalable backend services and RESTful APIs with a focus on performance, security, and maintainability
• Own ongoing maintenance, bug fixes, and performance optimization for live eCommerce applications
• Implement responsive, accessible, high-performance UIs following modern React / Next.js best practices

Software Engineer — Devxhub Mar 2022 – Feb 2026 · 4 Years

• Designed, developed, and maintained production-grade applications using Nuxt.js, Next.js, and Astro.js
• Delivered user-facing features across healthcare, education, content management, and digital archiving
• Built responsive, accessible, SEO-optimized UIs with a focus on Core Web Vitals and rendering performance
• Integrated RESTful APIs in close collaboration with backend engineers, translating business requirements into robust features
• Modernized legacy codebases by refactoring component architecture, improving maintainability, and removing critical tech debt
• Uphold code quality through structured peer reviews and consistent engineering standards

Practices: Agile / Scrum · Code Review · SEO Optimization · SSR · i18n · AI-Assisted Development · Performance Optimization

• Travel Buddy (API) — Next.js, TypeScript, Express.js, PostgreSQL, Prisma Full-stack trip planning platform with JWT auth, RBAC, protected routes, and SSR. Helps travelers find compatible partners and share experiences. Live: travel-buddy-mamun.vercel.app

• Digital Wallet (API) — React.js, RTK Query, TypeScript, Express.js, MongoDB Secure wallet platform with role-based dashboards for Users, Agents, and Admins, transaction validation, and access control. Live: digital-wallet-frontend-mamun.vercel.app

• Full-Stack Starter Templates

  • Frontend: Next.js Starter — React 19, Tailwind v4, shadcn/ui
  • Backend: Express + Prisma Starter — Express, Prisma, JWT, RBAC, Redis Solves repetitive setup with preset auth + user management, role-based access, and production-ready tooling. Live: nextjs-starter-mamun.vercel.app

• B.Sc. in Computer Science & Engineering (2021) Begum Rokeya University, Rangpur

• Languages: Bangla (Native) · English (Professional Working Proficiency)

⭐ Feel free to explore my repositories and reach out if you'd like to collaborate or discuss opportunities.