I've worked with John in the past and will happily vouch for his expertise. Over the past several years John has worked with a broad variety of start-ups in the early-to-mid development stage on both sides of the Atlantic. He's come away with a great understanding of the challenges start-up founders face leading up to launch.<p>I regularly turn to him for advice on engineering management. I'll definitely be buying this book.<p>(For the record, John didn't ask me to write this nor did he know I was going to.)