Research Engineer / Scientist – Pre‑training (AI)

About the role

Anthropic is looking for passionate Research Engineers and Scientists to join its Pre‑training team in Zurich. You will work at the intersection of cutting‑edge AI research and practical engineering, helping to build the next generation of large language models with multimodal capabilities.

Key responsibilities

• Conduct research and implement solutions in model architecture, algorithms, data processing, and optimizer development.
• Lead small research projects independently while collaborating on larger initiatives.
• Design, run, and analyze scientific experiments to deepen understanding of large language models.
• Optimize and scale training infrastructure for efficiency and reliability.
• Develop and improve developer tooling to boost team productivity.
• Contribute across the stack, from low‑level optimizations to high‑level model design.

Required profile

• Degree in Computer Science, Machine Learning, or a related field (BA required; MS or PhD preferred).
• Strong software engineering background with experience building complex, high‑performance systems.
• Proven track record in large‑scale ML systems, especially language modeling.
• Ability to balance research goals with engineering constraints and work collaboratively.

Required skills

• Python
• Deep learning frameworks (e.g., PyTorch, TensorFlow)
• ML accelerators
• Kubernetes
• Large‑scale data processing