William Sayama
Developer Advocate
Greater Tokyo Area Japan
Summary
👤
Senior🎓
Top SchoolWilliam Sayama is a bilingual Developer Advocate with 11 years of experience building and growing the kintone developer ecosystem across Japan and internationally. He leads a small cross-cultural DevRel team, authors technical documentation and tutorials, and has self-published books and presented workshops on JavaScript, data visualization, REST API integrations and even VR integrations. Known for turning demos and event booths into measurable engagement—900+ Twitter followers and 35,000+ booth visitors—he combines hands-on technical teaching with strategic community campaigns. His background in translation and communications uniquely positions him to make complex API concepts accessible to diverse developer audiences.
11 years of coding experience
8 years of employment as a software developer
GPA 3.1, Bachelor of Arts, Major in Information Technology, GPA 3.1, Bachelor of Arts, Major in Information Technology at International Christian UniversityGPA 3.67, Master of Media Design, Media Design, GPA 3.67, Master of Media Design, Media Design at Keio University
Japanese, English
Github Skills (22)
displays10
plug10
plugin9
row9
sdk9
rows9
pulse7
monorepo7
datepicker5
dates5
plugin-development5
rest3
rest-api3
selector3
windows2
Programming languages (8)
Github contributions (5)
kintone-samples/SAMPLE-Add-yourself-plug-in
Nov 2018 - Mar 2026
This sample plug-in displays a button on the record details page, which adds the logged in user to a user field when clicked.
Contributions:2 reviews, 4 PRs, 7 pushes in 7 years 4 months
displayspluginplug-inbuttonfield
kintone-samples/SAMPLE-YouTube-embed-plug-in
Aug 2019 - Apr 2024
A sample Kintone plug-in to embed YouTube videos into Kintone.
Contributions:1 review, 1 PR, 1 push in 4 years 7 months
videosyoutube-videosyoutubeplug-inkintone
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