Question 1: On average, yes, but not as much as people think. Question 2: both? I started my "career" with an internship job where i had to write deploy some

Question 1: On average, yes, but not as much as people think. Question 2: both? I started my "career" with an internship job where i had to write deploy some cakephp+sencha extJS with windows server 2004 and IIS (~2013/2014). The frontend part were "easy" but tedious, it was tables upon tables, a bit of jquery just because, absolutely hideous css (i think at the end i added bootstrap twitter classes on Sencha extJS). the "backend" was handled a bit like today, with a bit of backend work in the "View" part of the MVC (because Sencha ExtJS). Hard to find bugs induced in this "backend" work, because the only tooling you had were the old devtools, the only documentation you had with the official one (and a bit of SO/blogs, but not that much), and since typescript didn't exist, you had a lot of weird type/casts bugs. I recently started a new job were i also have to do some short interfaces for my step functions, served by lambda (mostly). I had to learn react and typescript from scratch, and thought i wouldn't be productive in months. I was productive after a week, and after a month could confidently say i'm fluent with React router and props, and passable with typescript (Complex union type threw me off for more time than i like to admit). I still don't know if i understand ExtJS :/ By the way: the documentation isn't that much better now, with all the shitty blogs and stuff like "tutorialpoint" on google frontpage, but you can search code patterns through github and gitlab, and this help immensely.