Kazunari Hara (@herablog)

- Tech Lead and Developer Experts (Web Performance) at CyberAgent, Inc

Twitter / GitHub

I 😍 the Web.


CyberAgent, Inc (2008~)

- A lead of the one of the largest frontend teams (technical lead and management)

- A member of a management team (making technical decision)

- A lead of the frontend recruiting team (planning and interviewing)

Products (the latests)

Design System Spindle (2020~)

- A tech lead

- Make some tools such as a UI library and a text linter

- Write a guideline on system performance and user experience

- Maintain the design system with some stakeholders

- Tools (Slack, Figma, Asana, Miro, Firebase, TypeScript, React, CSS, Node.js)

Koe-No-Blog (2019~)

- A tech lead and a product manager

- Develop an accessible and performant web product with some cutting-edge technologies

- Tools (Slack, Sketch, Zeplin, Fastly, Firebase, LitElement, CSS, WebAssembly, Node.js)

Ameba Blog (2016~)

- A tech lead

- Replace some outdated technical stacks to the modern stacks and maintain it

- Make the efficient plans and negotiate it with some stakeholders

- Tools (Slack, Sketch, React, CSS, Node.js, Chef, Docker)

Activities (the latests)

PWA Night Conference 2021 (2021)

Core Web Vitals in Practice explains all about Core Web Vitals in 2021 such as metrics, tooling and the way to improving them.

Cumulative Layout Shifts in Practice (2020)

An article on web performance. This article explains tips for detecting layout shifts and improving it.

PWA Night CONFERENCE 2020 (2020)

A presentation on making scalable web application using PWA. A related slide "Web App Checklist" is also available.

『WEB+DB PRESS Vol.109 最新CDN入門』(2019)

An article on CDN explaining HTTP headers, web caching and CDN comparison.

The further information is available at my works page.