Underneath all change, we have people who are always focused on the future and the renewal of the way we work

Our team

Hiroaki Toyoshima

Chief Executive Officer (CEO)

DIONE is a cloud computing company that was born in 2022 and is unique in the world. It was born through a miraculous encounter between international engineers from global IT companies and a Japanese management team. I was born and raised in a ordinary family in Ehime Prefecture, and I was blessed with the opportunity given by my local university to study abroad in Seattle, USA.

At that time, it was still rare to obtain overseas information on the Internet, so needless to say that everything I saw was a fresh surprise for a student who came from a small rural town. What I saw in the “Land of Freedom and Dreams” was “respect for the individual,” which is the exact opposite of Japanese totalitarianism, and “infinite possibilities” brought about by the combination of global diversity. I dreamed of starting my own business someday, and after returning to Japan, while doing various part-time jobs, I began to constantly think about new services that the world needs. And 15 years ago, I started a web service company with trusted colleagues from various backgrounds. In the IT industry, which is constantly changing with the rapid changes of the times, I realized that many of the challenges we face today can be helped by the power of innovation. When I immediately called out to a group of excellent engineers, I was fortunate enough to receive a great deal of empathy and support, and decided to establish DIONE.

Sergio Miyama

Chief Technology Officer (CTO)

20 years of IT experience in several industries, including: Telecommunication, Media, Retail and Government.

As a lead developer, he has successfully deployed solutions at the Ministry of Health, Labour, and Welfare in Japan. He has spent the past years focused on offering architectural advice for new customer on the MS Cloud Platform. In the meantime, he has successfully worked with great companies like Softbank, Sony, Canon, Mitsubishi Bank, Sanrio, and many others.

He was the offering lead and solution architect (e.g., Offering Director) for Avanade; as well as, responsible for maintaining the Azure CAF module for Terraform, supporting enterprise customers to overcome challenges using Infrastructure as Code (IaC), as a Cloud Solution Architect for Microsoft. Since 2022, he has established as a CTO at Dione.

Shunpei Sakurai

Chief Financial Officer (CFO)

Born in 1978. After starting a student business and selling it, joined Starts Corporation (TSE: 8850) as a new graduate in 2003. Becoming the company’s top salesperson with 2.5 billion in sales in the third year, and after working as the company’s HR recruiter, became the Taiwan branch manager in 2010 and turned the company profitable. In 2017, founded and co-managed Shared Value Co., Ltd., and then established Profit Maximization Technology Co., Ltd.

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