Reinforcement Learning AI Jobs

Own and execute data strategy for research teams advancing frontier AI capabilities across RLHF, safety, tool use, and agentic workflows.

Design and run experiments to improve Claude's perception and agentic capabilities. Develop robust, reliable evaluation frameworks for measuring our models' ability to complete complex computer tasks.

We're hiring for the Code RL team within the RL organization. As a Research Engineer, you'll advance our models' ability to design silicon. Hardware design is difficult and unforgiving – exactly the sort of domain we want Claude to excel at.

Build and extend web platforms for RL environment creation, management, and quality review — including environment configuration, versioning, and validation workflows.

Set technical direction for evaluation systems, research infrastructure, and internal tooling across the Claude Code team Architect eval frameworks that measure model capabilities across diverse coding tasks and scale with our research roadmap.

Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

Working across the full stack to identify and remove bottlenecks preventing progress toward scientific AGI Develop approaches to address long-horizon task completion and complex reasoning challenges essential for scientific discovery.

Implement and optimize post-training techniques at scale on frontier models. Conduct research to develop and optimize post-training recipes that directly improve production model quality.

Lead, coach, and grow a high-performing team of AI and software engineers, developing them into strong technical leaders while fostering a culture of ownership, technical excellence, experimentation, and continuous learning.