In my posting Ruby Book Sales Pass Perl, I also showed some treemaps highlighting the growth of calls for Ruby skills in the job market. I mentioned the fact that Web 2.0 also was bright green in the jobs treemap. But I thought I’d give a little more detail on how these job categories are growing.
In order to understand the job growth graphs, you need to keep in mind that the number of job listings vary from month to month. Accordingly, we set the “job market size” to an arbitrary value at the start of our data in June 2005, and then show the increase (or decrease) relative to that number. So what we’re comparing in the graph below is the relative month-to-month growth of the overall job market (in red) to the relative month-to-month growth of the specific technology job market (in blue). We’re not comparing the absolute size of those markets.
Here’s the growth in jobs calling for Web 2.0 expertise, with June 2006 up about 4200% over June 2005:
Note how the Web 2.0 drumbeat begins at around the time of our second Web 2.0 Conference in the fall of 2005.
Here are the graphs for AJAX and Ruby. Note that these are not on the same scale as the graph for Web 2.0. AJAX job postings are up about 1400%, and Ruby job postings up about 500%:
