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Rafiuzzaman
@rafiuzzaman_
Bangladesh
Anglais
À propos de moi
Hi, I’m Rion — a Full-Stack Developer with real industry experience building scalable SaaS platforms, AI tools, and custom web apps. I specialize in Next.js, React, TypeScript, Python, Node.js, FastAPI and modern admin systems. I build fast, secure, production-ready applications with clean UI, strong architecture, and SEO focus. From dashboards to APIs and integrations, I deliver reliable solutions with clear communication and long-term support. Let’s build something great.
Compétences
Rafiuzzaman
hors ligne •
Temps de réponse moyen de 1 heure
Voir mes services
Applications Web Full stack
I will build a next js ecommerce website with payment gateway and admin panel
Applications Web Full stack
I will be your next js full stack developer for saas, web app, or react site
Portfolio
Expérience professionnelle
Full-Stack Engineer
Next Level Bangladesh • Temps plein
Dec 2024 - Present • 1 yr 5 mos
Engineered 8+ enterprise modules, including Task & Goals Management, Employee Portal, Marketing Suite, Community Hub, Social Integration, Calendar, and File Manager for "MyManager" and "MM Client" platforms. Optimized performance using MongoDB aggregation pipelines, dramatically improving query response times across the Task and Goals, Employee, and Marketing modules. Architected scalable REST APIs and implemented Redux Toolkit for state management across interconnected modules. Resolved 100+ critical production bugs across the whole project, including Task & Goals Management, File Manager, and Calendar systems, maintaining high application reliability. Collaborated to build drag-and-drop Web Builder and Form Builder with real-time preview, enabling non-technical users to create pages and forms without coding. Collaborated with cross-functional teams in Agile sprints to deliver user-centric solutions aligned with business requirements.
Full-Stack Web Developer
LipikaAI • Temps plein
Sep 2025 - Feb 2026 • 5 mos
Engineered comprehensive AI-powered writing enhancement platform integrating multiple Large Language Models including ChatGPT, Claude, Grok, Gemini, and DeepSeek for intelligent content generation and refinement. Developed full stack paraphrasing solution replicating QuillBot functionality with advanced text rewriting capabilities, implementing both frontend interface and backend processing using Next.js 16 and Node.js. Built grammar correction system similar to Grammarly featuring real-time error detection, contextual suggestions, and writing style improvements across frontend and backend architectures. Implemented AI content detection bypass tool HixBypass and integrated GPTZero for AI-generated content verification, ensuring comprehensive content authenticity analysis. Architected scalable backend APIs using Node.js and Express.js with MongoDB database, handling high-volume text processing requests and managing complex LLM API integrations. Designed responsive user interfaces using TypeScript, Tailwind CSS, and Next.js 16, delivering seamless user experiences for multiple AI-powered writing tools within a unified platform.
Software Engineer
Hasan It Solution • Temps plein
May 2024 - Dec 2024 • 7 mos
Developed 3+ responsive web applications using Next.js, React.js, Node.js, and Express.js with API integration via Axios and real-time updates using React Query. Implemented secure authentication systems using JWT, NextAuth, and Firebase for robust user data protection and session management. Designed visually engaging UIs using Tailwind CSS, Bootstrap, DaisyUI, and Framer Motion, creating smooth animations and intuitive user experiences. Integrated payment gateways (SSLCommerz, Stripe) for e-commerce solutions, handling secure transaction processing and order management.
