Koji Ishimoto


Koji Ishimoto Design Engineer
Koji Ishimoto was born and grew up in Japan. He is originally from web designer, majored in living style design at University of Shiga Prefecture. He is also passionate about programming. In his career, he was responsible for coding HTML/CSS/JavaScript, and education to new employees.

He writes about web performance and mobile web in his blog, MOL - Designing for a Mobile World!


Work Experience

2021 - Present, PLAID, Inc
PLAID develops and manages "KARTE"​ that realizes "individual customer"​ communication.
Design Engineer

2018 - 2021, Japan Digital Design, Inc
Japan Digital Design drive change through financial innovation.
UI Developer

2016 - 2017, Mercari, Inc.
Mercari provides a hassle-free and secure way to buy and sell items straight from your mobile device or tablet.
Front-end Developer

2015 - 2016, Kaizen Platform, Inc.
Kaizen Platform is a full-service digital customer experience optimization platform. Kaizen scalably optimizes the entire customer journey with data-driven creativity.
Front-end Developer

2012 - 2014, CyberAgent, Inc.
CyberAgent manages Ameblo which is one of the top sites in Japan.
Web Developer

2007 - 2012, DMM.com Labo Co.,Ltd.
DMM.com is one of the top E-commerce sites in Japan.
Web Designer, Web Analyst


JS Girls

2014 - 2015, founder
A developer community for ladies who learn JavaScript.


2012 - 2014, Organizer
The Frontrend meetup is about everything frontend technology.


2010 - 2012, Organizer
A community for developers who learn JavaScript in Kanazawa.