Latest job stats on technology adoption – Flash, Silverlight, iPhone, Android, C#, Java

It is all very well expressing opinions on which technologies are hot and which are struggling, but what is happening in the real world? It is hard to get an accurate picture – surveys tend to have sampling biases of one kind or another, and vendors rarely release sales figures. I’ve never been happy with the TIOBE approach, counting mentions on the Internet; it is a measure of what is discussed, not what is used.

Another approach is to look at job vacancies. This is not ideal either; the number of vacancies might not be proportionate to the numbers in work, keyword searches are arbitrary and can include false positives and omit relevant ads that happen not to mention the keywords. Still, it is a real-world metric and worth inspecting along with the others. The following table shows figures as of today at indeed.com (for the US) and itjobswatch (for the UK), both of which make it easy to get stats.

Update – for the UK I’ve added both permanent and contract jobs from itjobswatch. I’ve also added C, C++, Python and F#, (which hardly registers). For C I searched Indeed.com for “C programming”.

  Indeed.com (US) itjobswatch (UK permanent) itjobswatch (UK contract)
Java 97,890 17,844 6,919
Flash 52,616 2,288 723
C++ 48,816 8,440 2470
C# 46,708 18,345 5.674
Visual Basic 35,412 3,332 1,061
C 27,195 7,225 3,137
ASP.NET 25,613 10,353 2,628
Python 17,256 1,970 520
Ruby 9,757 968 157
iPhone 7,067 783 335
Silverlight 5,026 2,162 524
Android 4,755 585 164
WPF 4,441 3,088 857
Adobe Flex 2,920 1,143 579
Azure 892 76 5
F# 36 66 1

A few quick comments. First, don’t take the figures too seriously – it’s a quick snapshot of a couple of job sites and there could be all sorts of reasons why the figures are skewed.

Second, there are some surprising differences between the two sites in some cases, particularly for Flash – this may be because indeed.com covers design jobs but itjobswatch not really. The difference for Ruby surprises me, but it is a common word and may be over-stated at Indeed.com.

Third, I noticed that of 892 Azure jobs at Indeed.com, 442 of the vacancies are in Redmond.

Fourth, I struggled to search for Flex at Indeed.com. A search for Flex on its own pulls in plenty of jobs that have nothing to do with Adobe, while narrowing with a second word understates the figure.

The language stats probably mean more than the technology stats. There are plenty of ads that mention C# but don’t regard it as necessary to state “ASP.NET” or “WPF” – but that C# code must be running somewhere.

Conclusions? Well, Java is not dead. Silverlight is not unseating Flash, though it is on the map. iPhone and Android have come from nowhere to become significant platforms, especially in the USA. Beyond that I’m not sure, though I’ll aim to repeat the exercise in six months and see how it changes.

If you have better stats, let me know or comment below.

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