Engaged in security business since 2000. Engaged in a wide range of work including planning, sales and marketing at a major corporate group company and a security company. Subsequently, he launched an organization and served as its head.

Worked for a security company, first in web application security diagnostics, and then as a product development manager for web application security testing tools.

After working for a security company, engaged in web application security diagnosis and development of web application security testing tools, he brought the security organization in-house at a user company. Engaged in security diagnosis and design, security policy development, etc. Also lectures and writes, including lecturing at the Security Camp National Conference 2015-2018. Non-executive director.

Engaged in the launch of security services at a major system integrator, and then managed the department as a manager. Current position from January 2022.

Engaged in operation and maintenance of cloud services at a major security company. After that, he was seconded to a group company and contributed to the stability of the development system and the improvement of technology. Many achievements in discovering and reporting unknown vulnerabilities.

After engaging in vulnerability diagnosis for large companies, he set up a support department at a security company, then set up a customer success department and worked as a manager. Seminars and lecture activities are also held.

After working as a security engineer at a major security company group company, engaged in a wide range of operations such as planning, sales and marketing at a major security company. He was seconded to a group company and was responsible for launching a sales organization at a startup. After returning to work, engaged in the launch and operation of digital marketing and inside sales departments.