The Sierra Interview Process -- Stages, Questions, and What They Really Evaluate

In this episode

This episode explains Sierra’s engineering interview format published on April 22, 2026: planning, building with AI tools, and reviewing the result. It separates the published format from our practice suggestions and treats the debugging exercise as a pilot. Confirm the format for your role with your recruiter.

Notes updated November 1, 2026

What to take away

• Official guidance: Sierra describes a two-hour build with AI tools, followed by discussion of the product, code, and route to production. Confirm your team’s format with the recruiter.
• Our advice: practice choosing a small scope and explaining what you cut when time runs short. Be ready to show how you checked AI-generated work.
• Our advice: prepare one project you can discuss in detail, including a change in direction and the evidence behind it. Ask your recruiter which stages apply to your role.

Sources

• Sierra: The AI-native interview (April 22, 2026)