I have different columns for the state of the application:
- Unsubmitted/Interested - Submitted/In Process - Recruiter Contact - Phone Interview - In Person Interview - Offer - Lost: Denied - Lost: No Response
In each card, I attach the resume and cover letter (if applicable) that I sent. I have checklists to help prepare for different parts of the interview(s) and use the discussion comments to keep track of communication I have with different people. I've even used the discussion to track interview questions to help better prepare for other interviews (lots of coding screens use similar questions...).
If you wanted to keep contact information with the card, you could use a power up to attach a note from Evernote with contact information if you wanted. I usually just put the name in the discussion though.