Anthropic · 51–200 people · Series B
Research Engineer, Machine Learning (Reinforcement Learning)
- London
- Hybrid · 1 day in office
- £260,000 – £630,000 pa
- Mid-level
Blends reinforcement learning research with engineering, building and scaling RL infrastructure, training environments and evaluations for large language models. Work spans agentic tool use, code generation, reasoning and distributed GPU training, with close collaboration across research, alignment and production teams.
PyTorch · TensorFlow · JAX +3