Senior RL Data Platform Engineer — End-to-End Data & UI

Anthropic is seeking a senior full-stack engineer to build, scale, and operate data collection and labeling interfaces for researchers and annotators. You will own both frontend and backend systems, design scalable data pipelines, and partner with RL researchers to translate data needs into production-ready tools.

You will shape interfaces, APIs, and dashboards that ensure data quality and low latency, while balancing reliability with experimentation.