I have failed many time at interviewing at technical interviews. I have never failed any 'real' world job project/endeavor. I've built an entire org's codebase

I have failed many time at interviewing at technical interviews. I have never failed any 'real' world job project/endeavor. I've built an entire org's codebase and this company is now selling products worldwide successfully. Design,coded,built,tested and deployed code in 4 languages , each element being critical to the company. I am an experienced dev, but couldn't tell you my birthday in a technical interview. All the rest of the interview is fine, I only 'freeze' up at technical questions. Sucks.