[ljm]

Certainly for London, which practically thrives on Ruby and Rails and has done so for the last decade. There hasn't really been a shift - it's basically the case that you start with Rails (or maybe Node) and move on from there, or some times actually go back to Rails because it's so easy to hire for.

[cutler]

I don't see that reflected in the stats for London on Indeed.co.uk. If you search by title there are currently 25% more Django jobs than Rails whilst Python:Ruby is 4.2:1. Node:Rails is about 3:1. I've also noticed a steady decline in Rails job postings. You're seeing about half the number of Rails postings compared with a year ago. Another interesting trend is that Python has more adoption outside London than Ruby in relative terms. Ruby is very much a niche London phenomenon unlike the USA where Ruby/Rails jobs are spread more evenly across the country.