Research Engineer, Knowledge Team

Sourced from simplify.jobs

Anthropic is hiring Research Engineers to redesign how Claude interacts with external data sources and knowledge bases. You will design new information architectures for LLM consumption and train language models to use them effectively. The role combines ML research with hands-on engineering, including fine-tuning, reinforcement learning, and agentic search evaluation.

• Design and implement new information architecture strategies from scratch
• Perform fine-tuning and reinforcement learning to teach language models to interact with new architectures
• Build hard knowledge base eval sets to identify failure modes
• Design and evaluate advanced agentic search capabilities

• Very experienced Python programmer producing reliable, high-quality code
• Good machine learning research experience
• Experience developing software that utilizes LLMs such as Claude
• Results-oriented with a bias toward flexibility and impact
• Clear written and verbal communication
• Bachelor's degree or equivalent experience

• Collaborating with product teams to prototype and deliver solutions
• Building complex agentic systems that utilize LLMs
• Developing scalable distributed information retrieval systems (search engines, knowledge graphs, RAG, indexing, ranking, query understanding)