[weixiyen]

A jack of all trades "might" work, but honestly it depends on the person. Someone who understands the full stack is usually not be someone qualified to be building scalable fault-tolerant pieces of server side infrastructure for a company.

Node.js is so easy to screw up, so difficult to debug, and little things can take down your entire application.

The combination of the language itself in addition to the type of people who typically would choose Node.js over other more proven options would make me worried that a blind choice is being made based on language alone and not proper evaluation or understanding of the other options available.

Personally I believe it is far better to be a language-agnostic company that thinks of different server side components as services, which might be in different languages instead of trying to use a tool just because they know the language already.