Sr. Engineer, AI & ML

As a Sr. Engineer, AI & ML, you will play a pivotal role in designing and implementing advanced Generative AI solutions that elevate CarMax’s omni-channel customer experience. You will leverage expertise in large language models (LLMs), semantic search frameworks, and AI orchestration to deliver innovative, scalable applications. Your work will directly influence CarMax’s technology evolution, ensuring secure, high-performing AI systems that drive business impact., * Design, develop, and deploy Generative AI models, including LLMs and semantic search frameworks, for customer-facing solutions.

• Identify and address implementation challenges, providing creative, technically sound solutions.
• Build integrated monitoring systems to validate AI performance and ensure architecture integrity.
• Mentor engineers on best practices for Generative AI development and deployment.
• Review code for quality and adherence to clean coding standards.
• Collaborate on prompt engineering, testing, and evaluation using tools such as PromptFlow.
• Drive continuous improvement in AI architecture through innovation and stakeholder feedback.

• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 4+ years of experience in AI/ML, cloud computing, or systems engineering.
• Advanced proficiency in Python and scripting languages (e.g., shell scripts).
• Hands-on experience with Azure OpenAI Service and Azure AI Search.
• Expertise in LLMs, semantic search frameworks, and AI orchestration layers (e.g., Semantic Kernel).
• Experience with DevOps practices, CI/CD pipelines, and testing frameworks.
• Strong communication skills and ability to influence technical vision across teams.

Preferred Qualifications

• Master’s degree in Computer Science, Engineering, or related field.
• Experience integrating CI/CD pipelines for prompt engineering with feedback loops.
• Knowledge of advanced Generative AI development tools and frameworks for enterprise-scale applications.

Work Location and Arrangement: This role will be based out of the CarMax Midtown office, Richmond VA or CarMax Technology Hub, Plano TX and have a Hybrid work arrangement.

• Associates based in Richmond work onsite 5 days per week.

• Associates based in Plano work onsite 2 days per week.

Work Authorization: Applicants must be currently authorized to work in the United States on a full-time basis. Sponsorship will not be considered for this specific role.

Except as otherwise required by state law, CarMax Associates are entitled to the following paid sick, vacation, and holiday time.

Associates that are considered full-time hourly or commission/incentive eligible:

• To earn up to 48 hours of sick time per year accrued on a per pay period basis and between 80 hours and 200 hours per year of vacation time after a 90 day waiting period depending on years of continuous service with the Company.
• For 8 hours of pay for each of a total of 6 paid scheduled holidays per year plus 1 floating holiday. If such an Associate does work on a scheduled holiday due to business need, they are eligible for Holiday Premium Pay.

Associates considered full-time salaried are entitled to paid time away with no specified limit as needed for sick, vacation, bereavement, jury duty, holidays, floating holiday, etc. subject to manager approval.

At CarMax, we are the nation’s largest retailer of used cars with stores from coast to coast, and we are still growing. We’re rethinking the way people buy cars - and it’s our associates that help us do just that. We believe work should feel meaningful and rewarding, with opportunities to make an impact every day. This is where innovation meets passion - be inspired and supported to take us to the future., You’ll join CarMax’s GenAI team, collaborating with engineers, product leaders, and stakeholders to build next-generation AI capabilities. This team focuses on creating enterprise-grade AI solutions that enhance customer interactions and streamline business processes through cutting-edge machine learning technologies., At CarMax, we revolutionized the used car buying experience over 30 years ago by introducing transparency and integrity into the process. Our commitment to customer experience, innovation, and community has made us the nation’s largest used car retailer. With over 250 store locations and over 30,000 associates, we are proud to have been recognized as one of the Fortune 100 Best Companies to Work For® and are committed to helping our communities thrive.