Basic Java,j2ee, sql, spring security and distributed computing concepts. It was not tough and can be cleared with 1 month preparation. It all depends on hiring manager. It was good experience
The process took 1+ week. I interviewed at Collabera (New Delhi)
Interview
It was 4 rounds of interview two technical and one on management and then HR . It was with average difficulty and questions about core Java data structures , spring boot , SQL queries
I applied through a staffing agency. I interviewed at Collabera (Jersey City, NJ) in Oct 2014
Interview
There were two rounds of Technical phone interviews by collabera, then two to three rounds of face to face technical interview with the client. Questions asked were java basics and previous project work.
