William Pietri
Software Engineer
From a family of developers and entrepreneurs, he started writing code at 12. He has since filled many roles, but for the last 15 years he has alternated between leading the technical side of ambitious products and advising others on how to make systems and teams run well.
To learn more about him, a good place to start is his LinkedIn profile. He comments occasionally on Twitter, and even more occasionally post to a group blog on Agile methods.
He sometimes participates in various nerdy forums, including the Lean Startup Circle and Balanced Team mailing lists. In the past he have been active on Wikipedia (where he was voted an administrator), Stack Overflow (4 gold badges) and Quora (Top Writer 2013 and 2014).