Also, strip the position hiring requirements down to the bare essentials. Many new HR people create job descriptions containing all the things they'd like to see in a candidate. Instead, focus on the qualities or skills you must have. A pleasant disposition is a must have for a front facing client service role. It's a nice to have quality for a non-client facing accountant.
Test, test, and test again. Use objective measures to evaluate your applicant. Don't rely entirely on soft criteria like interview ability. Make them demonstrate ability, or use role specific psychometric tests to determine suitability.