Certified tester

Professional testers should confirm their knowledge by a certificate. There is a very good certification roadmap which is accepted throughout the world - ISTQB (International Software Testing Qualifications Board). For now ISTQB has issued over 240.000 certifications in more than 70 countries world-wide. 

ISTQB offer three levels of certification: Foundation, Advanced and Expert, there are also a few specialization on each level (except Foundation Level) like Test Manager or Test Automation. Full roadmap you can see above.

Now ISTQB is working on improve certification roadmap and probably from 2013 it will be new schema shown below. After Test Manager we can pass exam on expert level in two specializations: Improving the Test Process and Test Management, from Technical Test Analyst we can go to Test Automation and Security Testing. After Test Analyst we can pass exam from some 'future modules'.

ISTQB gives Syllabus for each level (and from 2013 for each specialization) and also the example exam questions which will help you to pass the exam. You can also find in your country ISTQB partners which organize training.