Client side

When Speed Wasn’t About Coding Faster: Our Journey to ‘One Person One Release’

Finally, Mercari Japan in English! Our Road to Cross-Platform i18n

Websocket XSS vulnerability discovery: My security journey at Mercari

Data-fetching strategy for Mercari Global Marketplace Web App

Behind the Global Launch: Decoding the Android Engineering Strategy for Our New App

Taming Agents in the Mercari Web Monorepo

Enabling internationalization in our web Turbo monorepo

Evolving Mercari’s iOS codebase into a multi-product monorepo

How We Deliver Mobile App Updates Faster

Building a region‑aware, SEO‑friendly global web app