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System Design & Production Engineering / 35
hardAnthropic

Design the Claude chat service

The reported Anthropic open-ended design, and the round where candidates get tested on GPU memory and KV-cache arithmetic mid-whiteboard. The serving spine, the memory math that explains every product limit, and the safety layer the rubric explicitly wants.

Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

The reported Anthropic open-ended design, and the round where candidates get tested on GPU memory and KV-cache arithmetic mid-whiteboard. The serving spine, the memory math that explains every product limit, and the safety layer the rubric explicitly wants.

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