- Gachon Univ. Dept. of SW (17.03 ~ 23.02)
- International Mid Pac Hawaii (22.06 - 22.07)
- VIP (Gachon Univ. Venture club) (17.03 ~ 17.07)
- Gachon Univ. Dept. of SW : JAVA Coding Clinic TA (21.07 ~ 21.07)
- Hypork Young Creator (21.07 ~ 21.08)
- CJ UNIT 5th (21.08 ~ 21.12)
- Gachon Univ. Dept. of SW : 'Operating System' lecture TA (22.03 ~ 22.06)