If the client is yours than first check what are the key skills they are looking for. Don't rely on job description, they are too lengthy to go through and to search for a perfect match. Better to understand it from hiring manager that what would be the role and responsibilities (instead to reading job descriptions) so you could screen all the qualities while going through the resume.
If you are working as a recruiter than ask account manager for all these details and try to grasp every information related to mandatory skills, total experience, university/degree preferences, salary/billing rate, benefits, incentives and clients profile and domain. It will help you a lot in finding better guys and to end up with closures.
Hope that it will help!