Anthropic is an AI safety company building reliable, interpretable AI systems. As a Senior Data Scientist on the Research team, you'll design experiments, build evaluation frameworks, and shape how we understand LLM capabilities at scale.

• Design and run experiments measuring model capabilities and alignment
• Build scalable evaluation pipelines for large-scale model assessment
• Collaborate with researchers and engineers on model priorities
• Communicate findings to technical and non-technical stakeholders

• 5+ years experience in data science or applied research
• Strong Python, SQL, and statistical modeling skills
• Experience with large-scale pipelines — Spark, dbt, or similar
• Familiarity with LLMs, NLP, or ML evaluation methods