· Participated in the various national projects and researches on spatial policy support systems of housing and urban development for the Ministry of Land, Infrastructure and Transport of Republic of Korea in Korea Land and Housing corporation(LH)
· worked as a staff secondent in Safer Cities Programme, UN-Habitat in 2018. In 2020, he joined at the department of smart city research of the Seoul Institute of Technology as a research fellow

· Jae-Boong Choi is a chair professor of department of service design and also a professor of school of mechanical engineering, Sungkyunkwan university. Jae-Boong is spending most of time in designing future service or product by combining various technologies. In particular, he is focusing on human behavior affected by the birth of smartphone. He defines the digital transformation (or the 4th industrial revolution) as the total change of social system due to the sudden change of human behavior after using smartphones. According to him, the new human race who is so called ‘Phono sapiens’ is creating new culture and ruling the new business as well. He wrote a book, ‘Phono Sapiens’ which predicts the future business trend and culture change in 2019 and will be published in Japan, Taiwan and Thailand in 2020 as well. Currently, he is delivering lecture to companies, government and NGOs regarding new culture created by phono sapiens. He is also a member of future education steering committee of Ministry of Education of Korea.

· Deputy Mayor of Vladivostok City
· Deputy Director - Head of the Fire Service of the Main Control Directorate of the Primorsky Region for Fire Safety (2016-2021)
· Far Eastern Fire and Rescue Academy of the Ministry of Emergency Situations, Primorsky Region, Russia (1997-2016)

Recent Career History in Public Service (Seoul Metropolitan Government)
· (May 2021- Present) Vice Mayor II for Administrative Affairs
· (Jul. 2020- May 2021) Deputy Mayor of Urban Regeneration
· (Jul. 2018- Jul. 2020) Deputy Mayor of Housing and Architecture Headquarters
· (Jul. 2017- Jul. 2018) General Director of Seoul Metropolitan Infrastructure Headquarters
· (Jan. 2017- Jul. 2017) Director-General of Housing Planning, Urban Regeneration
· (Jan. 2015- Jan. 2017) General Director of Urban Planning Bureau