The first part of most SEO strategies is keyword research - trying to discover the search terms relevant a website that are used the most. However, for sites that feature inventories or long lists of items organised into categories and sub-categories, it often makes sense to optimise these lists around the categories and sub-categories that are already being used.
The jobs on the Polytec website are organised into two main categories, Engineering and Scientific, so it makes sense for the jobs home page to reflect this by changing the page title from 'Polytec Personnel : Job Search' to 'Engineering and Scientific jobs from Polytec Personnel'.
With the addition of an H1 heading that matches the page title this page now stands a chance of matching 'engineering' and 'scientific' - both highly relevant keywords.