I recently move from a full-stack position into a more focused position. I felt like I was "jack of all, master of none" which really irked me. The time I was g

I recently move from a full-stack position into a more focused position. I felt like I was "jack of all, master of none" which really irked me. The time I was given for training was good, but it had to be split among all the different layers of the stack which meant I never really got an opportunity to get deep into any particular layer.