We all have specialties but how does an employer know who is good at it unless you are face to face??

Screening interviews helps to shortlist, also skype interview sometimes works incase of difficulty of face-to-face, it is always easy to find a good CV but very difficult to find the good candidate.

Testing by phone and determined by the Director

Professional screening by phone interview can really help. Good references work too. Do NOT trust certifications and CVs :)