Possibly Craig Silverstein, but my guess is Urs Hölzle. He was Google's first VP of engineering and a huge advocate for everything mentioned in the article: "design docs, audited code reviews, early design reviews, readability reviews, resisting introduction of new languages, unit testing and code coverage, profiling and performance testing".

Early Google had more than its fair share of genius engineers with giant egos. Urs was brilliant and tough - a perfect combination for keeping everybody in check and shaping the engineering culture.