I was chosen as a candidate, one of four, from the pool of summer interns across TI. We were flown out to Dallas and interviewed by a panel of about 20 engineers working in various roles throughout TI FABs in the Dallas area. Candidates are given a tour of the facility by a previous year's hire and then given lunch. After lunch with the panel, the interviewers were split into four rooms, each room with 3-4 engineers and one HR rep. Candidates randomly rotated through any three of the rooms for interviews. Almost all questions were soft-skill questions. I hear if you have a more materials background, you tend to get more technical questions.
1st room: give a timed presentation and field questions.
2nd room: questions on past experience and expectations
3rd room: questions on leadership (situational) and expectations
Afterwards all candidates are assembled and asked to solve a hands on design problem with heavy time pressure.