Recruiter approach via employee referral, after several email exchanges containing resume and questionnaire.

1st Interview: Skype, 45 minutes.

• 1 coding problem on CollabEdit with side questions about complexity and how to reduce memory usage.

Again, some email exchange about legal stuff and information about the recruitment process.

2nd Interview: Face-to-face, 3 interviews each 50 minutes.

• Coding questions on paper or on a whiteboard.

1. Find the break point of an integer sequence (e.g., 4 6 10 20 21 23 40 5 7 13, answer 5) whose size is big and unknown.

2. Implement Singleton.

3. State the time complexity of insert, delete, and search operations on a linked list, array, and binary tree.

4. Print a linked list from start and in reverse (iterative and recursive).