Research Engineer, RL Scaling Science

Visa sponsorship: available – Anthropic says on its careers website "We do sponsor visas!", adding that it can't sponsor every role and every candidate but will make every reasonable effort if it makes you an offer.

Anthropic, the AI safety company behind Claude, is hiring a Research Engineer for its RL Scaling Science team in London. The team studies how reinforcement learning behaves as it scales and turns that into training recipes for frontier models.

What you would do:

• Design, run and interpret large-scale reinforcement learning experiments
• Build benchmarks that make long-horizon progress measurable
• Turn validated findings into production training recipes
• Debug issues where research meets infrastructure

What they look for:

• Strong empirical research skills in RL, large-scale ML training or a close area
• Ability to own large experiments from start to finish

Salary: £375,000 to £640,000.

This job is listed on Supportive Bridge from Anthropic's own careers website. Supportive Bridge doesn't charge candidates for job applications or visa sponsorship – never pay anyone for a job offer or a Certificate of Sponsorship.

Apply directly on Anthropic's website using the button on this page.