None. Narrowing your group of potential hires just by looking at the CV/profile is like playing a roulette. You need precisely defined list of competences (not only technical ones) required to perform well on this specific position in this specific team/company. Than you need to assess these competences one by one and CV analysis is very weak assessment tool. I'd suggest a very short telephone interview with all 10 candidates and than inviting 3-5 for a competence based interview.