Byungmook Kim is a Node.js Developer at Viva Republica (Toss) since August 2021, with expertise in Typescript and Node.js using the Nest framework. Prior experience includes a role as a Software Engineer at VUNO Inc., where Byungmook utilized technologies such as Flask, Sanic, PostgreSQL, and React.js, as well as work with PACS/DICOM systems. From November 2015 to January 2019, Byungmook served as Engineering Team Lead at Specup Ad, contributing to the development of various projects. Additionally, Byungmook participated in the 7th Mobile Application Development camp at Bon Angels in January 2014, and worked as a Global Samsung Storyteller during an internship at Samsung Electronics in 2013. Academic credentials include a Master's degree in Management Engineering with a focus on IT Management from the Korea Advanced Institute of Science and Technology, and an exchange program in Chemistry at the University of California, Berkeley.