Software Engineer, Tokens and Prompt Structures is open at Anthropic in San Francisco, CA | New York City, NY. The posting gives a salary of $320K - $405K. Posted on Sep 16, 2026, and still on Anthropic’s careers page when we last checked, on Nov 14, 2026.
About the role
The Encodings Infra team maintains the libraries that engineers and researchers across Anthropic use to encode text and multimodal data into a form that Claude can consume. It also determines Claude’s prompt shape: how a user’s turn is represented to the model, how Claude calls tools and receives tool results, and so on. As a Software Engineer on this team, you'll own the design and maintenance of these…
The opening lines of the posting. The rest is on Anthropic’s careers page.
Hiring at Anthropic
Anthropic has 669 open roles right now, 59 of them remote. Most are in Engineering, Sales & Business Development and Data & Research. The median advertised salary across its roles with a published range is $352K. See all its roles
Similar Engineering jobs
All Engineering jobs- Technical Program Manager, Life Sciences Research (Genetic Medicine)Anthropic · 🇺🇸Boston, MA; San Francisco, CA | New York City, NY | Seatt…$290K - $365KLLM
- Robotics Data ResearcherClera · 🇪🇸Barcelona—Machine Learning
- Sr. Software Engineer, Machine Learning & Data InfrastructureOKX · 🇺🇸San Jose, California, United States$179K - $268KSeniorGoPythonJava
