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Changsu Lee has a total of 18 years of work experience in the field of software engineering. Changsu started their career at (삼)마비디업 in 2004 and worked as a Software Engineer for 10 years. In 2014, they joined mykoon as a Software Engineer and stayed there for 2 years. Since 2016, Changsu has been working at Spoon, initially as a Service Platform Team Lead and currently as the Backend Unit Lead.

Changsu Lee attended Sun Moon University from 1999 to 2005, where they obtained a Bachelor's degree in Education with a specialization in Educational Research. In addition to their formal education, Changsu Lee has also received a certification in Information Literacy from the Korean Educational Development Institute. The specific month or year of obtaining this certification is not provided.