← Journal
30 October 2026

Three months shipping in Tokyo

careerfrontendjapan

Draft — edit me from /admin.

一 · Small diffs, big numbers

At 24M+ monthly users, a two-line change to checkout is a feature. The discipline is in measuring it.

二 · Tests are a kindness

Playwright E2E coverage across cart, coupons and checkout meant every release was a little less scary.

三 · Kaizen

Improve a little, every day. It compounds.