06/2021 - 02/2022,

Developed healthcare system.

Worked as a senior software engineer who both handles the frontend and backend, also could platform(AWS) side.

Mainly focused on frontend side on this company and used react.js/redux/next.js/material-ui/react-hooks.

Used various algorithms such as Trie(prefix tree) and Suffix Array for web performance.

01/2020 - 05/2021,

Senior Full Stack Developer

Built user interfaces for a re-imagined user experience using React.js, Typescript, Redux, and Vue.js.

Cooperated with the back-end team in their development of RESTful APIs.

Wrote backend API endpoints with Node.js and AWS integration, especially S3.

Junior Full Stack Developer

07/2017 - 10/2019

Creating custom React.js, Vue.js components.

Developed creating subscription flow and frontend part of ‘’site face’’.

Implemented and updated application components, improved routing architecture.

Integrated GraphQL API using React Apollo

Implemented a pixel-perfect, responsive, and smart front-end UI.

Developed front end by using React/Redux. Participated in an Agile team.

Developed API endpoints with Node.js. Implemented payment gateway with Stripe.