Kazunari Hara
Engineering Lead, Ameba Management Board at CyberAgent, Inc.
Greater Tokyo Area Japan
Summary
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SeniorKazunari Hara is an engineering lead at CyberAgent with 18 years of web development experience, specializing in performance, accessibility, and design systems. He leads Spindle, Ameba’s award-winning design system (Good Design Award 2023), and has driven a 3x faster prototyping workflow by integrating Figma Dev Mode and Web MCP. As a long-term Google Chrome partner he built real-world demos for View Transitions, on-device AI, and Web MCP featured on Chrome for Developers, and improved Ameba Manga’s CLS by 10x, helping triple reader growth. A published author and frequent speaker, he distills complex front-end problems into practical guidance through books and conference talks across Japan. Less obvious: he pairs product-minded engineering with hands-on experimentation (including a WebAssembly voice-blog project) to bridge design and engineering for scalable, accessible user experiences.
11 years of coding experience
Github Skills (45)
accessibility10
typescript10
palette10
wcag10
react10
color-palette10
postcss9
css9
deprecated9
javascript8
multipart8
css-filters8
azure-storage7
media-queries7
authentication7
Programming languages (5)
Github contributions (5)
herablog/spindle
Nov 2020 - Jan 2023
Contributions:1 PR, 14 pushes, 3 branches in 2 years 2 months
openameba/textlint-rule-preset-ameba
Jun 2020 - Jan 2023
textlint rule preset for Ameba
Contributions:24 reviews, 54 commits, 51 PRs in 2 years 7 months
textlint
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