Software Engineer, Tokens and Prompt Structures

Anthropic

San Francisco, CA | New York City, NYFull Time$320K – $405K/yr AI Infrastructure

prompt structuresmultimodal dataClaudeencoding infrastructuresoftware engineering

Job Description

The Encodings Infrastructure team maintains the libraries that encode text and multimodal data for Claude and defines how user turns, tool calls, and tool results are represented to the model. This software engineer will build and improve infrastructure at the boundary of model interaction, prompt representation, and production AI systems.

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Job Details

Posted: September 21, 2026
Expires: October 21, 2026
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Applies: 0

About the Company

Anthropic

San Francisco, CA

Anthropic is an AI safety company working to build reliable, interpretable, and steerable AI systems. Creator of Claude.

Software Engineer, Tokens and Prompt Structures

Anthropic