Senior AI Foundations Engineer — LLMs & Finetuning

Capital One; California; Hybrid; USD 251,000 - 286,000; Full time

Job summary

Capital One is seeking an AI Engineer 5 to advance AI foundations, including LLM customization, fine-tuning, and reinforcement learning, within a responsible, scalable AI infrastructure.

You will partner with engineers, scientists, and PMs to build AI-powered banking solutions, optimize model performance, and contribute to governance and observability across production systems. A strong technical background and collaboration skills are essential.

Qualifications

• Bachelor's degree or higher in a related field plus extensive AI/ML experience.
• Experience with Python/Scala/CUDA and modern ML frameworks.
• Proven ability to deploy AI systems at scale in production.

Responsibilities

• Design, develop, test, deploy, and support AI software components including foundation model training and inference.
• Lead cross-functional collaboration to deliver AI-powered products for customers and associates.
• Implement guardrails, governance, observability, and model evaluation processes.
• Optimize multi-model orchestration pipelines integrating LLMs and domain models.

Skills

Python

Go

Scala

CUDA

Java

ML algorithms

Education

Bachelor's degree in Computer Science, AI, Electrical Engineering, Computer Engineering

Master's degree in Computer Science, AI, Electrical Engineering, Computer Engineering

Tools

AWS

Huggingface

VectorDBs

PyTorch

CUDA

Job description

Capital One is seeking an AI Engineer 5 to advance AI foundations, including LLM customization, fine-tuning, and reinforcement learning, within a responsible, scalable AI infrastructure.

You will partner with engineers, scientists, and PMs to build AI-powered banking solutions, optimize model performance, and contribute to governance and observability across production systems. A strong technical background and collaboration skills are essential.