Masakatsu Hamashita

Career path.

1. Sierra

   Software Engineer, Agent

   Mar 2026 - Present
2. OPERA TECH, Inc. (Acquired by Sierra)

   Software Engineer, Agent

   Sep 2025 - Mar 2026
3. LegalOn Technologies

   Machine Learning Engineer

   Mar 2024 - Mar 2026
4. Gunosy Inc

   Machine Learning Engineer

   Apr 2020 - Mar 2024
5. Gunosy Inc

   Machine Learning Engineer

   Feb 2020 - Mar 2020
6. Recruit Holdings Co., Ltd.

   Data Scientist Specialist Intern

   Feb 2019 - Mar 2019
7. Gunosy Inc

   Internship

   Jan 2019 - Jan 2019
8. Gunosy Inc

   Summer Intern

   Sep 2018 - Sep 2018
9. 株式会社リンクバル

   Summer Intern

   Sep 2018 - Sep 2018
10. 株式会社Faber Company

    Student Intern

    Jul 2017 - Sep 2017
11. 株式会社 サイバーエージェント

    Parttime Teacher

    Jun 2016 - Dec 2019