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Mustaqim K
@mdmustaqimkhan
Full Stack React NextJS NestJS NodeJS PostgreSQL MongoDB Developer
Bangladesh
Inglés, Bengalí, Hindi, Urdu
Sobre mí
I help businesses build modern web applications using React, Next.js, Node.js, Express.js, NestJS, PostgreSQL, and MongoDB. My services include Full Stack Development, SaaS applications, e-commerce websites, custom web development, REST API development, API integration, admin dashboards, bug fixing, website optimization, performance improvements, and responsive UI development. I focus on clean, scalable, maintainable code, clear communication, and delivering reliable, high-quality solutions that support long-term business growth.
Habilidades
Mustaqim K
desconectado •
Tiempo medio de respuesta: 1 hora
Revisa mis servicios
Corrección de errores
I will debug and fix your react or nextjs frontend bugs and errors, fix
Porfolio
Experiencia laboral
Self Employed
Freelance • 3 yrs 5 mos
Full Stack Developer
Aug 2023 - Jul 2026 • 2 yrs 11 mos
Flex Softr | Full Stack Developer Designed and developed production-grade SaaS platforms, e-commerce systems, and custom web applications using React, Next.js, Node.js, NestJS, TypeScript, PostgreSQL, and MongoDB. Worked across the entire development lifecycle—from architecture and database design to frontend development, backend APIs, deployment, and performance optimization. Built scalable, maintainable systems that support real business workflows while delivering excellent user experiences. Key contributions include: • Developed a multi-tenant SaaS e-commerce admin dashboard featuring Role-Based Access Control (RBAC), dynamic product management, schema-driven payment configurations, and complete order lifecycle management. • Built a custom full-stack e-commerce platform replacing WooCommerce with a modern Next.js frontend and Node.js backend capable of handling complex product variations, atomic inventory management, courier integrations, partial returns, and automated PDF invoice generation. • Delivered a comprehensive website performance and technical SEO optimization project, improving Lighthouse Performance scores from 57 to 90+ while achieving a perfect 100/100 SEO score. Optimized Core Web Vitals (LCP & CLS), implemented Incremental Static Regeneration (ISR), WebP/AVIF image optimization, JSON-LD structured data, and database query optimization. • Developed complete e-commerce platforms from scratch including product management, order management, blog systems, Q&A modules, authentication, REST APIs, and SEO-first architecture. Technologies: React, Next.js, Redux Toolkit, TypeScript, Node.js, NestJS, Express.js, PostgreSQL, MongoDB, REST APIs, GraphQL, Docker, AWS, GitHub Actions, Tailwind CSS, Prisma ORM, Redis, Socket.IO, Linux, Vercel.
Frontend Developer
Apr 2025 - Oct 2025 • 6 mos
BRtech | Frontend Developer Developed modern, scalable frontend applications using React, Next.js, TypeScript, Redux Toolkit, and Tailwind CSS for both internal products and client-facing platforms. Collaborated closely with backend engineers to integrate REST APIs, improve application performance, and deliver responsive user interfaces focused on usability, maintainability, and scalability. Major responsibilities included: • Built the complete frontend for a two-sided SaaS marketplace connecting candidates with verified experts. • Developed complex booking workflows including conflict-free slot management, booking lifecycle management, expert verification, structured feedback systems, and review management. • Optimized application performance through efficient state management, API integration, component architecture, and responsive UI implementation. • Worked within agile teams to deliver production-ready features while maintaining code quality, reusable components, and modern development best practices. Technologies: React, Next.js, TypeScript, Redux Toolkit, Tailwind CSS, REST APIs, Git, GitHub, Responsive Design, JavaScript.
