Had 3 phone interviews: 1) Usual stuff with technical recruiter. 2) Sales pitch and broad questions about my experiences with the hiring manager. 3) Tech Screen over collabedit.com with a random engineer who, after the usual questions, asked to code a generic (String key, Object value) LRU cache in 35 minutes. I spent almost all the time designing. I did not feel that the problem was appropriate for a phone interview.