Even if we assume that your code is infallible and that Go is a good choice for this purpose, a ground-up rewrite of the core service by an outside contractor w

Even if we assume that your code is infallible and that Go is a good choice for this purpose, a ground-up rewrite of the core service by an outside contractor with ~4 years of experience five months prior to launch is a pretty clear sign of absolute desperation amongst the upper echelons. It truly, truly sucks that you got bit at such a horrible time and it's virtually impossible that any part of it was your fault, but I don't think you can say there were NO signs trouble was brewing. The fact that they were bringing contractors on board that late in the game to bail them out of the holes they spent 3 years digging is one big flashing "DANGER" sign. Then there's everything else about the product... My absolute sincerest condolences, but it sounds like you might have made a couple rookie mistakes, too. As entertaining as hearing these insider tales might be, please don't add getting sued for breaking an NDA to that pile. Talk all the smack you want, but things like timelines, architectures and languages used are not public information at this point and we can be pretty sure these are not the most ethical people in the world.