Sangjin Han

SangJin Han is a Staff Engineer at Viva Republica (Toss) since November 2024, specializing in the Pay Tech Platform Team. Prior experience includes a role as a Software Engineer at PortOne Korea from July 2022 to November 2024, where backend services were developed for integrating APIs and SDKs with over 20 payment gateways. SangJin also served as a Mentor and Reviewer for web development using Node.js at 부스트캠프 (boostcamp) from September 2022 to January 2023. Earlier, as a Backend Engineer at 원더월 Wonderwall from April 2021 to July 2022, backend services were created to support concert reservations and commerce systems. Additionally, experience as a Software Engineer at Biock involved developing a backend eCRF service for managing clinical trial information and patient medication schedules, utilizing blockchain technology. SangJin holds a degree from Korea Digital Media High School, graduating in 2021 from the 해킹방어과 program.