Just take absolute numbers: According to indeed, there are over 1000 open jobs mentioning Scala in the US, and over 750 in the UK. Taken together, the number of open Scala jobs in both countries exceeds the number of open Groovy jobs. It's still small compared to Java jobs (to be precise 1.5% in the US, close to 3% in the UK), but Java is by far the most demanded language, so this is not surprising. To say there is no pick-up in adoption of functional languages is disingenuous, IMO.
And most of those job ads mentioning "Groovy" are for using groovy as an add-on to Java, while those mentioning "Scala" are usually for using Scala as the primary language.
And, I should add, given this level of demand it's a good thing we just finished the Scala massive open online class with more than 10'000 developers completing the course with success.
