There are tons of articles about the number of developers in the world. But most of them either lack good methodology or simply borrow statistics from other resources.
Here's what I did differently. I counted a real number of developers according to the preferred language in European countries and the US based on LinkedIn data.
As a result, I found out that:
Apart from researching the numbers of developers in the US, the UK, Germany, the Netherlands, and Ukraine, I've also decided to dig into the distribution of developers by seniority levels.
Ukraine has 9K PHP programmers, the US follows with 7K, the UK goes next with nearly 5K PHP developers. Germany and the Netherlands close the list with 2K+ and almost 3K PHP developers correspondingly.
The US has the biggest number of Java developers — there are 63K professionals. The UK — 14K, Ukraine — 8K Java programmers, while Germany and the Netherlands go behind with 6K Java engineers each.
The US has more than 10K Python developers, Ukraine follows with 3K, the UK has 2K+, while Germany and the Netherlands are behind with around 1K Python developers in each country.
There are almost 12K JS developers in the US, 8K in Ukraine, 5K in the UK, 3K in Germany and the Netherlands.
There are 3K Ruby on Rails developers in the US, 1K in Ukraine, 700 in the UK, 600+ in Germany, around 300 in the Netherlands.
The research helped me to make three valuable conclusions:
Previously published here.