Why do you think that your site has any faults? I think, that everything is just perfect - a lot of job categories, good country categorization and a lot of jobs to choose from. I have nothing to add, really wonderful job!
There are something I don't like in your site: 1. Your site color schema looks like old-style, there are too much light-gray color, there is no impressed point at the first glance. That's not good I think. 2. You should have a dashboard on the home page to show some recent activities or recent jobs. That would impress the new users a lot.
Hmm if anything you could use more graphics or color, kind of spread things out and give it a minimalist design. I'm a big reader so I don't mind seeing a lot of text bunched together but most people don't respond to such things. They want colors and pictures and people seem to prefer simple links to articles. I think adapting your site to this kind of style would help it. whowhatwhy [DOT] com