Having a Good Life by Creating ;)

Having a Good Life by Creating ;)

Start developing your own products.


Ruby on Rails Tutorial in Japanese

for learners

Learn web development from zero to deploy in order to start designing your own product.

Ruby on Rails Guides in Japanese

for developers

Enhance your web service by using 1,600+ pages contents on Ruby on Rails in Japanese.

Partners & Customers

《Community Support》

We think communities are important. As one of community members,
we provide the following programs with non-profit organizations.

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About us

We are 100% remote team. We work remotely using tech services like GitHub, Zoom, and Google Workspace, etc.

YassLab Team Photos

Photo of Yohei Yasukawa
CEO of YassLab Inc.

Yohei Yasukawa

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  • LinkedIn
  • Qiita

He obtained the degree of Master in Information and Computer Science from Waseda University, and studied at Monmouth College in Illinois, USA. He founded YassLab company in 2012, 100% remote-work company that focuses on Ruby/Rails projects above.

Beyond the company projects, he is also known as one of co-founders of Okinawa.rb/Okinawa RubyKaigi, CoderDojo Japan, and MITOU for U-17 projects. For such enthusiastic contributions to IT and Education fields in Japan, he was selected as one of persons possessing outstanding capabilities by METI-launched The MITOH Program, TEDxRyukyu speakers, and Outstanding Performance Awards at Fukuoka Ruby Award.

Company Profile


Logo of YassLab Inc.

Official Accounts

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Office: CASE Shinjuku, Sankei Bldg 4F, Takadanobaba 1-28-10, Shinjuku-ku, Tokyo, 169-0075

If interested, feel free to contact us.