Sean Jun
Full Stack Engineer at American Express
Greater Phoenix Area United States
Summary
👤
Senior🎓
Top SchoolSean Jun is a Full Stack Engineer with 10 years of experience building production React/Node.js applications and integrations at scale, currently shaping partner acquisition flows at American Express. He combines a strong STEM foundation—an MS in Materials Science and prior careers in analytical chemistry and biomaterials—with practical expertise in React, Angular, GraphQL, PostgreSQL, and robust test automation (Jest, Selenium, Cypress). Sean has driven measurable business impact (a 24% lift in submissions worth roughly $4M) by designing modular, geo-aware form architectures and dynamic UX, and has experience integrating React components into legacy Angular systems. An active contributor to the React documentation site, he focuses on UI/component improvements and build process updates, reflecting a knack for developer-facing work as well as user-facing product. Colleagues rely on him for clean, well-tested code and pragmatic solutions that bridge research rigor with product engineering.
10 years of coding experience
8 years of employment as a software developer
Bachelor of Science (B.S.), Biochemistry, Bachelor of Science (B.S.), Biochemistry at University of California, Santa BarbaraFull Stack JavaScript Development, Full Stack JavaScript Development at ThinkfulMaster of Science (M.S.), Materials Science and Engineering, Master of Science (M.S.), Materials Science and Engineering at Korea Advanced Institute of Science and Technology
English, Korean
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (9)
javascript10
react10
documentation9
html9
css8
gatsby8
website-development7
translation7
website-design7
Programming languages (6)
Github contributions (5)
reactjs/ko.react.dev
Jun 2019 - Nov 2020
React documentation website in Korean
Role in this project:
Front-end Developer
Front-end DeveloperContributions:25 commits, 1 PR, 7 comments in 1 year 5 months
Contributions summary:Sean primarily contributed to the React documentation website, focusing on UI and component-level changes. They modified components related to the layout, header, and footer, and made updates to the site configuration and build processes. The commits involved the integration of features such as a feedback form, a banner, and the update of the codebase to new versions and merge conflicts.
documentation-websitereactin-progressreact-documentationreact-progress
seanjun21/fridge-it
Aug 2016 - Nov 2016
Contributions:44 commits, 43 pushes, 1 branch in 3 months
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