Research Engineer, Pretraining at Anthropic Limited
Anthropic Limited · London, UK
- Occupation group: Software & IT
- Licensed sponsor: Anthropic Limited
Employer on register 23 October 2026 Ad mentions sponsorship
From the advert
About Anthropic
Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.
Anthropic is at the forefront of AI research, dedicated to developing safe, ethical, and powerful artificial intelligence. Our mission is to ensure that transformative AI systems are aligned with human interests. We are seeking a Research Engineer to join our Pretraining team, responsible for developing the next generation of large language models. In this role, you will work at the intersection of cutting-edge research and practical engineering, contributing to the development of safe, steerable, and trustworthy AI systems.
Key Responsibilities:
Conduct research and implement solutions in areas such as model architecture, algorithms, data processing, and optimizer development
Independently lead small research projects while collaborating with team members on larger initiatives
Design, run, and analyze scientific experiments to advance our understanding of large language models
Optimize and scale our training infrastructure to improve 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
Qualifications:
Advanced degree (MS or PhD) in Computer Science, Machine Learning, or a related field
Strong software engineering skills with a proven track record of building complex systems
Expertise in Python and experience with deep learning frameworks (PyTorch preferred)
Familiarity with large-scale machine learning, particularly in the context of language models
Ability to balance research goals with practical engineering constraints
Strong problem-solving skills and a results-oriented mindset
Excellent communication skills…
Advert text as supplied by the employer's job board; it may be a shortened extract.
Summary
Research Engineer, Pretraining at Anthropic Limited in London. Anthropic Limited is listed on the Home Office register of licensed sponsors (23 October 2026). Read the full job advert and apply on the employer's or job board's site. A sponsor licence means the employer is on the Home Office register. It does not mean this role is sponsored. Check with the employer. This is not immigration advice.
Read the full advert and apply
A sponsor licence means the employer is on the Home Office register. It does not mean this role is sponsored. Check with the employer. This is not immigration advice.