Research Engineer/Research Scientist, Pre-training

Anthropic is a public benefit corporation focused on creating reliable, interpretable, and steerable AI systems. We work as a single cohesive team on large-scale research efforts to ensure AI is safe and beneficial.

We are seeking a Research Engineer/Research Scientist to join our Pre-training team, responsible for developing the next generation of large language models. This role sits at the intersection of cutting-edge research and practical engineering.

• Conduct research and implement solutions in model architecture, algorithms, data processing, and optimizer development
• Independently lead small research projects while collaborating on larger initiatives
• Design, run, and analyze scientific experiments to advance understanding of large language models
• Optimize and scale training infrastructure for efficiency and reliability
• Develop and improve dev tooling to enhance team productivity
• Contribute to the entire stack, from low-level optimizations to high-level model design

• Advanced degree (MS or PhD) in Computer Science, Machine Learning, or related field
• Strong software engineering skills with a track record of building complex systems
• Expertise in Python and deep learning frameworks (PyTorch preferred)
• Familiarity with large-scale machine learning, particularly language models
• Ability to balance research goals with practical engineering constraints
• Excellent communication and collaboration skills

• High-performance, large-scale ML systems
• GPUs, Kubernetes, and OS internals
• Language modeling with transformer architectures
• Reinforcement learning techniques
• Large-scale ETL processes

Annual Salary: $350,000—$850,000 USD

We offer competitive compensation and benefits, including optional equity donation matching, generous vacation and parental leave, flexible working hours, and a collaborative office space.

Apply via the Greenhouse link. Anthropic sponsors visas and encourages applications from all backgrounds.