Photo of Yuma Ueno — Known online as “Umatan”

Profile / Founder & CEO

Yuma Ueno上野佑馬 · lives in Georgia, the country

Founder & CEO, WW inc.
Director, Startup Büro (Georgia)
Angel investor
Udemy instructor
Author

Data scientist and entrepreneur. After studying statistics and machine learning at the Waseda University graduate school, he worked on data analysis and digital marketing at Shiseido, Unilever Japan and an AI startup, then founded WW inc. in June 2021.

At WW inc. he works on AI and data science education, product development, and entertainment web services and media. He shows people the fun side of AI and data science through Stabiz, a media site with 100,000 visitors a month, and a YouTube channel with 65.4K subscribers.

He now lives in Georgia. As a director of Startup Büro, a company that supports local startups, he helps build the startup ecosystem there, and he invests in startups as an angel. He speaks at tech events outside Japan, including Global Tech Weekend Tbilisi (2025 and 2026) and DataFest Tbilisi.

On his own, he has written five books on AI and data science, and he teaches more than 130,000 students in 67 courses on Udemy.

Students on Udemy: 134,271
Reviews on Udemy: 26,914
Subscribers on Stabiz YouTube: 65.4K
Talks outside Japan: 3
Books: 5
Peer-reviewed papers: 3

As of 2026.11.09

Talks

Talks outside Japan

He speaks at a tech event and a data conference in Tbilisi, the capital of Georgia. Both are among the largest in the region.

SPEAKER
2026
Global Tech Weekend Tbilisi
Tbilisi, Georgia
One of the largest tech events in the region, covering AI, FinTech, gaming and more. Spoke for the second year in a row.
Official site ↗
SPEAKER
2025
Global Tech Weekend Tbilisi
Tbilisi, Georgia
A three-day tech event held in June 2025, covering AI, FinTech, gaming, Web3 and more.
Official site ↗
SPEAKER
DataFest Tbilisi
Tbilisi, Georgia
An annual data conference, one of the largest in Eastern Europe and Central Asia.
Official site ↗

Talks at companies

Otsuka Pharmaceutical
Hewlett-Packard
Furuno Electric

Career

Career so far

Waseda University graduate school
Research in statistics and machine learning
Shiseido
Digital marketer / data scientist
Unilever Japan
E-commerce specialist / data scientist
AI startup
2021.06Founded WW inc.
2022.02Published a manga guide to digital marketing and data analysis (in Japanese)
2022.10Launched yomeru, a book ranking
2023.02Published a guide to data science for business readers (in Japanese)
2024.01Moved to Georgia
2025.06Spoke at Global Tech Weekend Tbilisi
2026Spoke at Global Tech Weekend Tbilisi for the second year in a row
NowBased in Georgia
Director at Startup Büro, angel investor, Udemy instructor