Research Engineer, Pretraining Scaling - London
On-site · London, England, United Kingdom
London, England, United KingdomOn-siteFull TimeMid LevelBachelors DegreeAI ServicesStartup
Type
Full Time
Level
Mid Level
Education
Bachelors Degree
Company size
Startup
Industry
AI Services
Job Summary
Research Engineer to own critical aspects of Anthropic’s production pretraining pipeline, including model operations, performance optimization, observability, and reliability; debug and resolve cross-stack issues; design and run experiments to improve training efficiency and uptime; respond to on-call incidents during model launches; build and maintain production logging and evaluation infrastructure; collaborate across SF and London teams and contribute to institutional knowledge.
Required Qualifications
- Bachelor’s degree in a field relevant to the role
- Hands-on experience training large language models or deep expertise with JAX/TPU, PyTorch, or large-scale distributed systems
- Willingness to be on-call for production systems and during launches
- Experience debugging across the full stack (hardware, networking, training dynamics, evaluation infrastructure)
- Ability to design and run experiments to improve training efficiency and uptime
Desired Qualifications
- Bachelor's degree or equivalent in a relevant field
- Hands-on experience training large language models or deep expertise with JAX, TPU, PyTorch, or large-scale distributed systems
- Willingness to be on-call for production systems and work long hours during launches
- Ability to debug across the full stack (hardware, networking, training dynamics, evaluation infrastructure)
- Experience designing and running experiments to optimize training efficiency and uptime
- Strong communication and collaboration across time zones and teams
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