I've been called by recruiters who won't name the company they're recruiting for, the salary range, and are incapable of actually describing the daily-expections beyond buzzwords.
I've found the best approach for me is to google "sysadmin helsinki", etc, and applying directly to companies. Any time I see an application form that wants facebook/linkedin/github details I just close the window.
Dealing with people (in-house recruiters possible) in the actual company cuts actually allows you to have a decent conversation about expected skillsets, areas that are involved, working hours, on-call schedules, salary, etc.