Full-stack product engineering
Udith Chandrarathna
I design and ship performant, AI-ready product systems for teams that care about reliability, modern integrations, and long-term maintainability.
Snapshot
8+
Years Experience
3+
Core Domains
25+
Platforms & Projects
6+
Core Stack Areas
Shipping dependable product systems with full-stack ownership and AI integration capabilities.
From customer-facing interfaces to agentic workflows, APIs, and delivery pipelines, I focus on building systems that are intelligent, fast, and maintainable as they grow.
- React, Node.js, TypeScript, and modern AI SDKs
- Integrating LLMs and RAG into SaaS & Fintech
- Architecture, delivery, and performance optimization
What I Do
Technical depth across the stack
I work across the product lifecycle, from architecture and API design to frontend systems, release quality, and production performance.
Full-Stack Product Engineering
- React.js
- Next.js
- Vue.js
- Nuxt.js
- Node.js
- NestJS
- Express.js
- TypeScript
Backend Architecture & APIs
- REST & GraphQL APIs
- PostgreSQL & Prisma
- MongoDB
- Redis
- Supabase & Firebase
- WebSockets / Real-time
Frontend Architecture
- TypeScript
- State Management (Zustand, Redux)
- React Query & SWR
- Microfrontends
- Tailwind CSS & UI Libs
- Storybook & Design Systems
- Webpack / Vite
Cloud Delivery & DevOps
- AWS & GCP
- Vercel & Netlify
- Docker & Containers
- CI/CD (GitHub Actions)
- Monorepos (Nx, Turbo)
- Microservices
Performance & Observability
- Sentry
- Lighthouse CI
- Core Web Vitals
- Caching
- Code Splitting
- Bundle Optimization
Testing & Quality
- Jest
- Cypress
- Playwright
- SonarQube
- ESLint
- Prettier
- Husky
AI & Agentic Engineering
- OpenAI API
- Anthropic / Claude
- Vercel AI SDK
- LangChain / LlamaIndex
- Retrieval-Augmented Generation (RAG)
- Prompt Engineering
Portfolio
Selected Projects
A selection of product, frontend, and mobile projects focused on clean UX, reliable engineering, and thoughtful implementation details.
NextCart
Commerce without limits. A powerful e-commerce platform for modern online stores, product management, order processing, and seamless shopping.
NextCart
Commerce without limits. A powerful e-commerce platform for modern online stores, product management, order processing, and seamless shopping.
SaleDesk
Smart POS for modern business. A fast point-of-sale system for retail stores, restaurants, inventory, billing, and customer management.
SaleDesk
Smart POS for modern business. A fast point-of-sale system for retail stores, restaurants, inventory, billing, and customer management.
ResortDesk
Smart management for modern resorts. A complete property management system for reservations, guest check-ins, rooms, staff operations, and daily activities.
ResortDesk
Smart management for modern resorts. A complete property management system for reservations, guest check-ins, rooms, staff operations, and daily activities.
Orderly
Scan. Order. Serve. A QR code and digital restaurant ordering system for mobile menus, customer orders, and efficient restaurant workflows.
Orderly
Scan. Order. Serve. A QR code and digital restaurant ordering system for mobile menus, customer orders, and efficient restaurant workflows.
CourseMate
A modern platform designed for the seamless administration, documentation, reporting, and delivery of educational courses and training programs.
CourseMate
A modern platform designed for the seamless administration, documentation, reporting, and delivery of educational courses and training programs.
UDT Movies
A responsive movie discovery app built with Next.js and Tailwind CSS, designed around speed, filtering, and polished UI interactions.
UDT Movies
A responsive movie discovery app built with Next.js and Tailwind CSS, designed around speed, filtering, and polished UI interactions.
UDT Game Hub
A game discovery interface built with React and TypeScript, emphasizing reusable UI patterns and responsive browsing experiences.
UDT Game Hub
A game discovery interface built with React and TypeScript, emphasizing reusable UI patterns and responsive browsing experiences.
Manage Landing Page
A conversion-focused landing page built with a lightweight frontend stack and strong attention to layout clarity and visual rhythm.
Manage Landing Page
A conversion-focused landing page built with a lightweight frontend stack and strong attention to layout clarity and visual rhythm.
UDT Shoe Store
A product-led storefront experience built with React and TypeScript, balancing brand presentation with reusable shopping UI patterns.
UDT Shoe Store
A product-led storefront experience built with React and TypeScript, balancing brand presentation with reusable shopping UI patterns.
NFT Marketplace App
A React Native marketplace concept exploring mobile-first product discovery, visual storytelling, and card-based interactions.
NFT Marketplace App
A React Native marketplace concept exploring mobile-first product discovery, visual storytelling, and card-based interactions.
NFT Market Landing Page
A bold landing page concept built with React and TypeScript, focused on storytelling, layout contrast, and marketing presentation.
NFT Market Landing Page
A bold landing page concept built with React and TypeScript, focused on storytelling, layout contrast, and marketing presentation.
UDT Taxi Booking App
A mobility booking concept using React Native and mapping APIs, designed around quick actions, clear flows, and real-world utility.
UDT Taxi Booking App
A mobility booking concept using React Native and mapping APIs, designed around quick actions, clear flows, and real-world utility.
Cloud Hosting Portal
A cloud hosting marketing site built with a lightweight frontend stack and a strong focus on speed, clarity, and trust signals.
Cloud Hosting Portal
A cloud hosting marketing site built with a lightweight frontend stack and a strong focus on speed, clarity, and trust signals.
Dasu Voice Studio
A modern, high-fidelity web application that transforms text into expressive, neural-synthesized speech.
Dasu Voice Studio
A modern, high-fidelity web application that transforms text into expressive, neural-synthesized speech.
UAT Finance
A premium, highly-private personal finance tool tailored for individuals who want complete control over their financial data and insights, without relying on third-party services or cloud platforms.
UAT Finance
A premium, highly-private personal finance tool tailored for individuals who want complete control over their financial data and insights, without relying on third-party services or cloud platforms.
UDT Loan Calculator
A modern, feature-rich React Native (Expo) mobile application for universal loan calculations. Calculate loan payments using multiple methods, view detailed amortization schedules, and share results across any country and currency.
UDT Loan Calculator
A modern, feature-rich React Native (Expo) mobile application for universal loan calculations. Calculate loan payments using multiple methods, view detailed amortization schedules, and share results across any country and currency.
Contact
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