Principal Software Engineer

Carmax

Hybrid

Quick summary

Work type
Hybrid
Location
Richmond, VADallas, TX
Posted
1 day ago
Nearby
99+ roles within 25 mi

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Salary context

How this pay compares to similar roles

Similar $186k
$126k most similar roles pay here $237k

This listing doesn't post a salary. Most similar roles pay $158,350–$212,750.

Based on 239 similar postings.

Employer

About Carmax

CarMax is the largest used car retailer in the United States, offering a customer-friendly, no-haggle buying experience with a broad selection of quality used vehicles, financing, and vehicle protection plans. Industry: Automotive Retail

Carmax currently has 40 open roles on FindRole.

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At a glance

TL;DR · Principal Software Engineer

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As a Principal Engineer on the Developer Experience team at CarMax Technology, you will design and build scalable developer platforms that enhance productivity for over 500 engineers. Your daily tasks include developing the agentic AI tooling platform, integrating Microsoft Azure offerings, and maintaining the MCP ecosystem to ensure consistent and reliable development practices. You will leverage advanced .NET/C# application development, RESTful API design, and distributed systems architecture while staying current with emerging AI capabilities. This role requires expertise in GitHub workflows, Azure DevOps, and infrastructure as code, alongside a passion for mentoring and fostering a community-driven engineering culture. Your work will significantly impact CarMax’s software development lifecycle by improving developer efficiency and enabling innovative solutions at scale.

Skills

Azure GitHub Git Azure DevOps CI/CD RESTful API Distributed Systems Microservices .NET C# Node.js TypeScript ARM/Bicep Python MCP development Authentication Authorization RAG architecture Vector Search Knowledge Graph Agile DevOps

What you'll do

  • Design and build the developer platform, including portals and onboarding frameworks.
  • Maintain integration layer for agentic AI development at scale for 500+ engineers.
  • Govern MCP ecosystem by defining patterns for integrations and documentation.
  • Establish and champion engineering best practices across Developer Experience portfolio.
  • Share knowledge through documentation, pairing sessions, and learning series presentations.
  • Stay current with evolving AI models and bring relevant advancements to the team.

What we're looking for

  • 8+ years of experience with .NET Core/C# and Microsoft Azure.
  • Strong background in GitHub workflows, PRs, code reviews, and Azure DevOps.
  • Expertise in RESTful API design, distributed systems, and microservices architecture.
  • Experience in agentic AI coding workflows and skills/agent workflow authoring.
  • Demonstrated ability to mentor engineers and lead technical projects.

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