Introduction:
Deloitte regularly held events on my University's campus, and promoted them. The first of these events that I attended was actually in my Junior year, when I knew basically nothing about consulting. The session was attended by about 25 people, and I was the last one to leave. The night ended with just me talking with six or seven employees. This kind of differentiation is incredibly important-- I was told after I got hired that this was something the recruiters consistently mentioned when I came up in conversation, and that it helped.
Pre-Interview.
After another event like that, I made sure to stay in contact with one of the employees that I knew. In the fall of my Senior year, Deloitte had a case interview prep session (a couple of weeks before the application deadline). Three weeks later, I received the invite to interview (approx. one week after the deadline was passed). Additionally, the night before the interview, they took all of us out to dinner for a few hours.
Interview Structure:
1 behavioral interview
2 case interviews, back-to-back.
The behavioral interview was very conversational, and the national principal/partner interviewing me was very laid back and genuine. I walked him through my resume, and we had a good talk about what values are most important to success and sustainability. It's important to be able to demonstrate a core interest in technology. This doesn't mean having experience with exactly what they do, but it does mean being able to talk in a natural and energetic way about technology, and why you are fascinated by it.
The case interviews were interesting--one more difficult than the other. The first was about a CRM system planning, and the second was centered on an international system transformation project. There was little/no attempt to stump or confuse me during either of the interviews-- they really wanted to give me a chance to show my creativity and thought process.
The offer came six days later.