Research Engineer, Pretraining Scaling - London

Highlights

• Train production pretrained models shaping Anthropic's future frontier systems.
• Own critical aspects of production pretraining pipeline for reliability.
• Gain hands-on experience with some of industry's largest training runs.

What they offer

• Competitive compensation and benefits
• Optional equity donation matching
• Generous vacation and parental leave
• Flexible working hours

Ideal candidate

A research-minded engineer who thrives on high-stakes operational work and ambiguous debugging. You love owning production systems end-to-end and care deeply about safe, beneficial AI scaling.

Requirements

• Hands-on experience training large language models or large-scale distributed systems
• Bachelor's degree or equivalent combination of education, training and experience
• Comfortable with on-call response and extended hours during model launches
• Strong debugging across hardware, networking and training dynamics
• Clear communication and collaboration across time zones under pressure