Experience

Toss Securities

• South Korea
• Financial Services
• 1 - 100 Employee

• Head of UX

  • Jun 2022 - Present

• Product Designer

  • Jan 2022 - Present



Viva Republica (Toss)

• South Korea
• Financial Services
• 400 - 500 Employee

• Product Designer

  • Jun 2018 - Jan 2022

  - Created UX of ‘Benefits’ feature - one of Toss main product feature, and Toss Point System which resulted increasing usage frequency and brand loyalty. Further more, designed products within Benefits which gives users additional benefits such as 만보기, 행운퀴즈, 브랜드캐시백. Created sustainable sales structure while improving user experience using gamification. - Increased new user acquisition rate by creating values within product itself and also by using viral loop (반짝특가, 숨은 정부지원금 찾기) - Developed a new user journey to allow users to check their credit score easily and find appropriate loan products. Show less



TappyToon

• South Korea
• Online Media
• 1 - 100 Employee

• UX/UI Designer

  • Jun 2016 - Jun 2018

  - Redesigned UX/UI of Android, which resulted in more than 500% increase in download rate - Designed UX/UI of iOS based on whole process (Research, Wireframe, Graphic, Prototype) - In charge of mobile web and desktop web interface design - Redesigned UX/UI of Android, which resulted in more than 500% increase in download rate - Designed UX/UI of iOS based on whole process (Research, Wireframe, Graphic, Prototype) - In charge of mobile web and desktop web interface design



Reseed marketing

• UI Designer

  • Jul 2015 - Sep 2015

  - Participated in creating GUI design and guide documents of ADT security application - Collaborated with marketing team to create various marketing materials - Participated in creating GUI design and guide documents of ADT security application - Collaborated with marketing team to create various marketing materials



frumInsight

• China
• Business Consulting and Services

• Brand Designer

  • Nov 2014 - Apr 2015

  - Participated in branding project for Kookmin Credit Cards such as Good Day Card and Wise Card - Designed CI/BI with identity guidelines of KCAV (Konkuk Ctc bio Animal Vaccine) - Designed interior design guidelines book for Gyeonggi Provincial Medical Center http://in-sight.kr/ - Participated in branding project for Kookmin Credit Cards such as Good Day Card and Wise Card - Designed CI/BI with identity guidelines of KCAV (Konkuk Ctc bio Animal Vaccine) - Designed interior design guidelines book for Gyeonggi Provincial Medical Center http://in-sight.kr/



마이크로소프트

• UX/UI Designer

  • Jun 2013 - Jul 2014

  UX/UI Designer (Student Partners 7th) - Designed UX/UI of an application called “Have a bean-time” for ADHD children's treatment - Designed UX/GUI of an application called “What’s your name?” about Korean Alphabet for infants - Led in planning, designing and release process of application to App Store with 3 developers UX/UI Designer (Student Partners 7th) - Designed UX/UI of an application called “Have a bean-time” for ADHD children's treatment - Designed UX/GUI of an application called “What’s your name?” about Korean Alphabet for infants - Led in planning, designing and release process of application to App Store with 3 developers