Software Engineer, Tokens and Prompt Structures

Highlights

• Own encoding libraries shaping how Claude consumes text and multimodal data.
• Run experiments on feeding structured data into Claude without confusing it.
• Touch systems from pretraining to finetuning to the API across the codebase.

What they offer

• Competitive compensation and benefits
• Optional equity donation matching
• Generous vacation and parental leave
• Flexible working hours

Ideal candidate

Library-minded engineer with 5+ years building developer-facing APIs who enjoys partnering with researchers. Results-oriented collaborator who cares about societal impact and keeping complex systems simple.

Requirements

• 5+ years of software engineering experience maintaining libraries, SDKs or developer-facing APIs
• Familiarity with ML terminology and LLM architecture to work with researchers
• Experience carrying out complex refactors in large codebases
• Strong communication skills and enjoy working with researchers and engineers
• Results-oriented, flexible, picks up slack outside job description
• Bachelor's degree or equivalent combination of education, training and experience