Research Engineer / Research Scientist, Finetuning
Anthropic is seeking a Research Engineer / Research Scientist to join their Finetuning team in London. This role involves constructing and iterating on machine learning experiments to improve the behavior of powerful AI systems through finetuning, with a focus on making AI helpful, honest, and harmless. The successful candidate will contribute to research on language models using techniques like constitutional AI and build tooling for efficient fine-tuning experiments.
Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.
You want to help construct and rapidly iterate on machine learning experiments to help us improve the behavior of powerful AI systems through finetuning. You care about making AI helpful, honest, and harmless, and are interested in shaping model behavior to be more aligned with human values and goals. You could describe yourself as both a scientist and an engineer. As a Research Scientist or Research Engineer on the Finetuning team, you'll contribute to research on improving language models through techniques like constitutional AI. You will have the opportunity to do creative, cutting-edge research on frontier models, and to see your work result in concrete improvements in performance and safety.
We generally expect research scientists to be able to iterate on their own experiments. We also provide opportunities for engineers to pursue their own research projects. Therefore this role can be more research oriented or more engineering oriented, depending on the experience and interests of the candidate.
Posted June 7, 2026