Lengthy and initially very concentrated. HR team of recruiters travels to your city after accepting resumes either directly from you or from a third party such as AeroTek. You show up to a Marriott or Holiday Inn and test on a laptop to see where your technical knowledge falls in their scoring system. Testing is 60 minutes timed, answering 60 questions from pneumatics, basic electrical theory, identifying basic hand tools, ohms law, 3-phase motors, gear and pulley diagrams, start-stop electrical diagrams and mechanical dos and don'ts such as using the closed end or open end of a combination wrench.
After the test, you take a first interview with someone that sizes up your personality to make sure you get along well with others. If you pass that, you go right over to the technical expert who interviews you on your comprehension and approach to fixing things and dealing with workload vs management demands.
After that you wait up to a week for a phone interview with the manager of the mechanical department you are applying for and they ask you identical questions and a few others that are specific to the job and location.
One more interview after that from a big wig HR staff to check you one last time that you can get along well with others and stay calm under high demand, high stress situations.
Then you wait again for a call offering the job and receive an offer letter.