I got the interview chance by employee referral. After nearly two weeks I got an email about the next step. The phone call from HR is as usual. And I scheduled the first interview time quickly. The tech-interview is described below: 1. two interviewer, 1 gentleman & 1 lady, use collebedit 2. whole process takes 1h 3. 2 question asked : nested integer & 2 sum III & follow-up 4. ask questions