Full-Stack Developer | AI Automation Builder | Enterprise Systems Engineer

💼 Available for Full-stack + AI Automation projects
Ex-Jio | Ex-Nutanix | IIT Dhanbad (Int. MTech Math & Computing)

• Scalable web apps (React, Next.js, Vite, Tailwind CSS)
• API backends (FastAPI, Node.js, TypeScript, PostgreSQL, MongoDB)
• CI/CD pipelines, system design, cloud infrastructure (AWS, GCP, Docker, Kubernetes)
• Production-ready internal tools and business management systems

• AI-powered applications (LLM integration, ChatGPT, LangChain, RAG)
• Data engineering pipelines & APIs for clean data ingestion
• ML/NLP models for recommendations, insights & automation
• Intelligent chatbots and workflow automation tools
• AI-driven analytics and decision support systems

• Business management systems (CRM, billing, inventory)
• Real-time data processing and analytics
• System design for scalability and performance
• Cloud infrastructure and DevOps automation

Frontend: React • Next.js • Vite • Tailwind CSS • Shadcn/UI • TypeScript
Backend: FastAPI • Node.js • Express • PostgreSQL • MongoDB • Redis
AI/ML: Python • LangChain • OpenAI API • Vector DBs (Pinecone, Weaviate, Milvus) • HuggingFace
Infrastructure: Docker • Kubernetes • CI/CD • AWS/GCP • Nginx • GitHub Actions
Enterprise: Java • System Design • Microservices • Event-Driven Architecture

🔥 I help startups and companies build:

✅ Full-stack applications with production-ready backend/frontend + RESTful APIs
✅ AI integrations: chatbots, recommendation engines, data pipelines, automation tools
✅ Business management systems: billing, CRM, inventory, analytics dashboards
✅ Data engineering: ETL pipelines, real-time processing, data warehousing
✅ Cloud infrastructure: scalable architecture, DevOps automation, monitoring

💰 Pricing: Competitive rates for high-quality, production-ready systems

Dual-Currency Billing Management System

• Built with React 18 + Vite + Tailwind CSS + Zustand
• Complete business management solution for invoice, client, product, and payment tracking
• Dual-currency support (UZS/USD) with real-time balance calculations
• Package-based inventory tracking with automatic calculations
• Professional PDF invoice generation and print-ready layouts
• Real-time financial analytics and linked record navigation
• Tech: React Router, State Management, Business Logic, Responsive Design

AI-Powered Analytics Dashboard

• Real-time data visualization and insights
• LLM-powered natural language queries
• Automated report generation
• Tech: Next.js, FastAPI, PostgreSQL, LangChain

LLM-Integrated Workflow Automation

• Intelligent task automation and scheduling
• Natural language command processing
• Integration with Slack, Discord, and Teams
• Tech: Python, OpenAI API, FastAPI, Redis

Clean & Scalable Data Ingestion Platform

• RESTful API for multi-source data ingestion
• Real-time data validation and transformation
• Automated pipeline orchestration
• Tech: FastAPI, PostgreSQL, Docker, Kubernetes

Intelligent Support Automation

• RAG-based knowledge retrieval
• Context-aware responses with LangChain
• Multi-language support
• Tech: Python, Vector DB (Pinecone), OpenAI API

🏗️ System Architecture – Scalable microservices, event-driven design, distributed systems
🔐 Security & Performance – Authentication, authorization, API security, optimization
⚡ Real-Time Systems – WebSockets, streaming data, live updates
📊 Data Engineering – ETL pipelines, data modeling, analytics infrastructure
🤖 AI Integration – LLM APIs, RAG systems, intelligent automation
☁️ Cloud & DevOps – AWS/GCP deployment, containerization, CI/CD automation

✨ Production-Ready Code – Clean, maintainable, well-documented code with best practices
✨ Business Logic First – Deep understanding of real-world business requirements
✨ End-to-End Delivery – From architecture design to deployment and monitoring
✨ Performance Optimized – Fast, efficient, and scalable solutions
✨ Modern UI/UX – Beautiful, intuitive interfaces with attention to detail
✨ AI-Enhanced – Leveraging latest AI technologies for intelligent automation

✅ Built complete dual-currency billing system with 7,151 lines of production code
✅ Designed real-time balance calculation engine with dual-currency support
✅ Implemented package-based inventory tracking with automatic calculations
✅ Created professional invoice preview system with PDF generation
✅ Delivered zero-linter-error, audit-ready production codebase
✅ Architected scalable state management with Zustand

📧 Email: rounsunn.dev@gmail.com
💼 LinkedIn: linkedin.com/in/rounsunn-dev 🐦 Twitter: @rounsunn_dev
💻 Portfolio: rounsunn.dev

💬 Available for:

• Full-stack web applications
• AI automation tools
• Business management systems
• Data engineering pipelines
• Cloud infrastructure projects

🎯 Response time: 24 hours for project inquiries

I deliver secure, scalable, and cost-effective solutions across:

• 🌐 Full-stack web applications
• 🤖 AI-powered automation systems
• 📊 Data engineering pipelines
• ☁️ Cloud infrastructure

Let's build something amazing together! 🚀

⭐ Currently working on: AI-powered business intelligence tools
🌱 Currently learning: Advanced RAG architectures, Vector databases, LLM fine-tuning
🔭 Open to: Interesting projects, collaborations, and consulting opportunities

"Building the future, one line of code at a time."