Roy Lee
Full-Stack Development

Roy Lee

Experienced front-end and Fintech web application developer.
Work with Roy Work with a Full-Stack Development

About

Roy Lee is a full stack web engineer with over 7 years' experience in web development. He is much proficient in JavaScript, TypeScript, Python and PHP but also in React, Vue, Express.js, Django and Laravel. As a senior web developer, he had participated in several projects from small to large scale for different industries and customers using latest technologies and frameworks in web development.

Employment

6 roles
Nov 2021 - Apr 2022 5 months
Senior Front End Developer
MJCZone
  • Built reusable components and responsive pages using TypeScript, Vue3, Quasar2, and Vuex.
  • Integrated real-time communication features inside the application with SignalR.
  • Collaborated with backend team to create several mini-apps that can be easily integrated into the page.
  • Researched and integrated GIS tools (ArcGIS and Google map API) and document management SDK to the application.
Feb 2019 - Jun 2021 2 years 4 months
Full Stack Web Engineer
Nexxo
  • Worked on the development and implementations of decentralized applications with React, Solidity, and Truffle.
  • Architected, developed, and deployed web/mobile applications with Express.js, PostgreSQL, React, React Native, Mobx, and Typescript.
  • Implemented unit testing and e2e testing in React projects with a testing library in React, Enzyme, and Cypress.
  • Architected and developed microservices using Koa.js, MySQL, Prisma, Elastic Search, and maintained monolith web applications with Django and React.
May 2016 - Feb 2019 2 years 9 months
Senior Web Developer
Loadsys Solutions
  • Led development team in the delivery of various DjangoReact and MERN stack projects requiring close cooperation among members to share information and develop solutions to meet a broad array of deliverables.
  • Designed, developed, and deployed more than four full-stack web applications according to business objectives and needs of various clients with React, Vue, Django, and Express.js.
  • Improved the page speed by 15% for the e-commerce site that generates $25 million annually in revenue by implementing Code-Splitting and Optimizing performance with React, GraphQL, and Apollo.
  • Implemented SEO in React application for an e-commerce site with a catalog of over 20,000 products leading to an increase in page views per session of 23% with SSR in Next.js.
  • Worked on building a customer-facing web application with Express.js, Prisma, Vue.js, PostgreSQL, and Node.js.
  • Built Progressive Web Application (PWA) with React, TypeScript, and GraphQL (Relay).
  • Deployed several web applications using Docker, Kubernetes, and AWS.
Sep 2015 - May 2016 8 months
Backend Developer
Loadsys Solutions
  • Maintained backend code built with Express.js, and MySQL and collaborate with the product team to implement new features plan for future products.
  • Designed, implemented, documented, and successfully deployed real-time applications with Node.js, Socket, and WebRTC.
  • Worked on MERN stack project as a cross developer with MongoDB, Express.js, React, and Node.js.
Apr 2015 - Sep 2015 5 months
Frontend Developer
Loadsys Solutions
  • Worked on the Payments team to save over 50,000 customers time and improve cash flow through the development of modern, responsive customer experiences using Angular and Ant Design Library.
  • Contributed to the in-house UI library to create reusable React components that saved over 200 hours of development time per month.
  • Created a web app MVP for a store delivery management platform with over 100 business customers to create, manage, and monitor deliveries using React and Redux.
Nov 2014 - Apr 2015 5 months
Frontend Developer
Liventus
  • Delivered responsive, cross-browser compatible, and accessibility compliant websites, achieving 19% faster load time than the industry average using React and Flux.
  • Collaborated with the UX/UI design teams to improve the website and applications, increasing conversion rates by 25% using SASS/SCSS and Bootstrap.
  • Expanded features, refined code, and improved performance with React, producing smoother operations and enhancing user engagement. 

Education

Sep 2010 - Jul 2014 3 years 10 months
Bachelor, Computer Science
University of California, Riverside

Portfolio

5 items