Librarians are...

It is but to dream.

LIBRARIANs are organized and systematic. They are data driven in their decision-making, and work to design teams and processes that can reliably ship quality code in line with the priorities of the company. As the product and engineering team scales, a Librarian can figure out how to create a structure that can coordinate the efforts of many while maintaining the creativity and information flow between teams. A librarian is also obsessed with the details and data. They understand how small things can make a huge impact, and understand how to unlock the value of data to optimize a user flow or build a beautiful new feature.

^{[ Quote from "Product Leaders as Poets and Librarians" by Rob Go from Business Insider on 7 February 2011 ]}