Ex-Anthropic engineer: I joined Claude Code team after having it build an RL env hands-free

dfeinition · x · 2026-11-04

A former Anthropic engineer shares a farewell reflection on two years with the Claude Code team. Two years ago, when Claude Code was a small internal tool, she asked it to build an RL environment, steering it for tens of hours without manually writing a single line of code — it worked, and she joined the team.

She also chronicles the shift in usage: at launch, most users approved every permission prompt by hand and mostly used Claude to answer questions and write tests; today the workflow looks fundamentally different. A rare firsthand account of both Claude Code's evolution and how AI changed her own career path.

Related event: Claude Code Early Member Cat Wu Announces Departure from Anthropic(15 posts)→

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