I applied through other source. The process took 3 months. I interviewed at Celestica (Toronto, ON) in Mar 2015
Interview
4 stage process:
1 - Interest interview via phone with Executive level
2 - Phone interview with Head of HR
3 - Phone interview with Manager you will be reporting to
4 - In-person interview at Celestica's location
The phone interviews will take anywhere from 15-45 minutes depending on the flow of the conversation and how much the person at the other end wants to find out about you (knowledge, personality, work ethics).
The in-person interview is held at the site and usually consists of a panel of Celestica employees. Know the business well, know how the company is different, know your audience, and most importantly know your value.
They like short but concise messaging so do exactly that.
Interview questions [1]
Question 1
Scenario questions where your "value adds" will be used as proof points to demonstrate your capability to do the job you will be hired to do.