- 1978-2000 Mitsui & Co. Ltd., Industrial Machinery Div.
- 1993-1996 Mitsui & Co. Ltd., Mumbai Office
- In charge of Plant/Machinery/IT sector
- 1996-2000 Mitsui & Co. Ltd., Osaka
- In charge of Machinery and IT sector
- 2000～ Involved in various Start Ups (IT/Food/Security/Energy sector, etc.)
- Consulting for Indian IT company and Accounting firm
- CEO of AI Connect Inc. (with Indian AI/Robotics Engineer)