I applied through other source. The process took 3 months. I interviewed at US Navy in Feb 2015
Interview
Board screening process and selection. A formal report to include and essay and on why you want to become a Test Pilot. With the essay you are required to capture all of your work experience and flight hours to include qualifications. Letters of recommendations are also required by your superiors.
Apply via PERS processes. Need recommendations, minimum flight hours and experience. Also good to have technical degree. Any experience with flight clearances in the fleet help as well. I did not do a face to face interview.