LinuxCareer's IT Skills Watch tracks IT skills demand leaning towards the Linux and Unix environment and reports the IT skills that are required by employers seeking Linux talent. Furthermore, the skills are sorted by the frequency they appear in such job advertisements. This report aims to extend the study of the IT Skills Watch by identifying which skills are grouped together in IT job advertisements. By employing cluster analysis LinuxCareer.com identifies 10 relatively different groups of skills that can be linked to IT job categories. The winner set of IT skills is also identified, which suggests the most popular, in terms of demand, IT qualification.

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According to our IT skill sets research, IT skills required by employers of Linux talent can be classified into relatively independent groups. This article focuses on the top three groups of IT skills that were in the highest demand in the last quarter (Jul-Sep 2013) and refer to job advertisements in selected countries, including USA. It turns out that these three groups of IT skills can be linked with Linux related job categories.

It seems that in the last quarter Embedded Devices Developers related skills were in the highest demand by employers of Linux professionals. The second and third skill groups refer to Virtualization Engineering and LAMP Administrator job opportunities, respectively. This article discusses skill requirements for these three types of job listings and provides insights into the dependency structure of pairs of IT skills within the analyzed three groups of skills.

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