It was a slew of modern stuff..none of which, on its own, is particularly hard to learn, but between someone who had been doing something else for 20 years vs someone who had been doing it for 6 months...the 6 month guy was always more appealing.
I'm not just talking about stuff like NoSQL, but most had limited experience with relational databases. Not just a lack of knowledge around ruby/python but sometimes even java/c#. Web, css, javascript, mvc or any relevant high level pattern - forget about it.
So I guess, specifically, what they lacked with the general knowledge of web or mobile (what we largely hire for) paradigms, and then the entire technology stack (from view to storage) that accompanies it.
And the few who did have relevant experience, tended to be "experts"...certainly not able to go from html/css all the way to database design.
I'm not just talking about stuff like NoSQL, but most had limited experience with relational databases. Not just a lack of knowledge around ruby/python but sometimes even java/c#. Web, css, javascript, mvc or any relevant high level pattern - forget about it.
So I guess, specifically, what they lacked with the general knowledge of web or mobile (what we largely hire for) paradigms, and then the entire technology stack (from view to storage) that accompanies it.
And the few who did have relevant experience, tended to be "experts"...certainly not able to go from html/css all the way to database design.