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Senior React jobs

A senior React role is usually one where you will decide something other engineers then have to live with: a component API, a state boundary, a rendering strategy, a migration path off the last person's decision. The code is the easy part of that; the hard part is that it has to survive contact with a team.

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You will be asked what you deprecated

Adding a component is junior work. Removing one that forty screens depend on, without freezing the roadmap for a quarter, is the thing being hired for. Interviewers at this level ask about the migration you ran, how you kept both versions alive, how you convinced people, and what you left behind unfinished. Honest answers about the unfinished part land better than tidy ones.

Performance means measurement

Expect at least one conversation that starts with a slow page. The weak version of the answer is a list of optimisations. The strong version starts with what was measured, in which tool, on whose device, and why the first suspect turned out to be wrong. Accessibility gets the same treatment at senior level — a specific widget, a specific fix, not a policy statement.