HY
Career profile
Hiroki Yamamoto
User Operations at OpenAI
Tokyo, Japan
Career path.
OpenAIUser Operations
Dec 2025 - Present- OpenAI
User Operations
Dec 2025 - Present - Sony
Backend Engineer
Nov 2023 - Nov 2025 - Sony
Backend Engineer
Nov 2023 - Nov 2025 - Amazon Web Services (AWS)
Cloud Support Engineer
Sep 2020 - Mar 2022 - Amazon Web Services (AWS)
Cloud Support Engineer
Sep 2020 - Mar 2022 - Oracle
Associate IT Consultant
Apr 2018 - Aug 2020 - Oracle
Associate IT Consultant
Apr 2018 - Aug 2020 - FAST JAPAN, Inc.
Product Management
Nov 2017 - Jan 2018 - FAST JAPAN, Inc.
Product Management
Nov 2017 - Jan 2018 - DeepMotion
Business Development
Jan 2017 - Mar 2017 - DeepMotion
Business Development
Jan 2017 - Mar 2017 - #LYVE
Media Associate
Jul 2016 - Nov 2016 - #LYVE
Media Associate
Jul 2016 - Nov 2016