At IHI Corporation and IHI Aerospace Co., Ltd., Hiroshi worked on the design of ORU (Orbital Replacement Unit) integration, EVA (Extravehicular Activity) support, and other tasks for the Exposed Facility of the International Space Station, and he was also project manager for satellite thruster development. In addition to design work, he also worked on quality control and procurement of purchased goods, including overseas. He graduated from the department of mechanical systems engineering at Kanazawa University.