What Nobody Actually Tells You About Working as a Dev in Japan

Documentation culture in Japanese engineering teams is thorough in a way I haven't seen elsewhere. Decisions are written down with their rationale. Processes are documented before they're followed. This seemed bureaucratic at first. What it actually means is that six months after a decision was made, you can understand why it was made. That has saved significant time in debugging and architecture discussions.

Code review culture is meticulous. Comments are specific, respectful, and substantive. Reviewers don't approve code they have concerns about — they ask questions until the concerns are resolved or the author has explained their reasoning convincingly. This slowed down my initial PRs. It also significantly raised the quality of everything I shipped.

The seniority gradient in communication is steeper than I was used to. A junior team member won't correct a senior's approach in a meeting, even when they're right. The correction happens privately, in a separate conversation. Understanding this dynamic meant I stopped misreading 'nobody objected' as 'everyone agrees.'

Work-life separation is real — most colleagues have clear boundaries around after-hours contact. This is genuinely healthy, but required adjustment from working environments where being responsive at any hour was implicit.