Researcher, Synthetic RL

About the TeamThe Synthetic RL team develops reinforcement learning methods that leverage synthetic data, environments, and feedback to train and evaluate frontier AI models. The team explores approaches such as self-play, simulators, and other synthetic evaluations to push model capability, generalization, and alignment beyond what is possible with the current prevailing methodology.About the RoleAs a Research Scientist on the Synthetic RL team, you will develop novel reinforcement learning techniques that use synthetic environments and feedback to improve large-scale models. You’ll work closely with other researchers to design experiments, analyze learning dynamics, and translate research insights into training approaches used in production systems.We’re looking for researchers who enjoy working on open-ended problems, value fast iteration, and want their work to directly shape how frontier models are trained.This role is based in San Francisco, CA. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new this role, you will:Research and develop reinforcement learning algorithmsDesign and run experiments to study training dynamics and model behavior at scaleCollaborate with engineers and researchers to integrate successful approaches into model training pipelinesYou might thrive in this role if you:Have a strong background in reinforcement learning, machine learning research, or related fieldsHave strong engineering and statistical analysis skillsEnjoy exploring new problem spaces where data, objectives, and evaluation are imperfect or evolvingAre motivated by seeing research ideas influence real-world AI systems

Created: 2026-04-21