Senior AI Foundations Researcher: LLM Fine-tuning & RL

Capital One Group; San Jose (CA); On-site; USD 239,000 - 272,000; Full time

Job summary

Capital One is seeking an Applied Researcher 4 to advance AI foundations, LLM customization, fine-tuning, and RLHF. You will partner with data scientists, engineers, and product teams to build scalable AI that improves real-time customer experiences across banking products.

The role emphasizes hands-on model development, training, evaluation, and deployment, plus publishing internal reports or conference findings.

Qualifications

• PhD in Computer Science, Engineering, AI, or related field is required or in progress.
• MS in related field plus 2 years of applied research experience acceptable.
• Strong foundation in AI methodologies and ML/DL.

Responsibilities

• Partner with cross-functional teams to deliver AI-powered products improving customer interactions.
• Leverage PyTorch, AWS Ultraclusters, HuggingFace, Lightning to analyze large datasets.
• Build AI foundation models from design to training and deployment.
• Translate research insights into tangible business outcomes.
• Collaborate with senior researchers on reports and conference submissions.

Skills

LLM

Finetuning

Data Preparation

Reinforcement Learning

Open-source tools

Cloud computing

Education

PhD in Computer Science or related field

MS + 2 years applied research experience

Tools

PyTorch

AWS

HuggingFace

Lightning

Job description

Capital One is seeking an Applied Researcher 4 to advance AI foundations, LLM customization, fine-tuning, and RLHF. You will partner with data scientists, engineers, and product teams to build scalable AI that improves real-time customer experiences across banking products.

The role emphasizes hands-on model development, training, evaluation, and deployment, plus publishing internal reports or conference findings.