I applied online. The process took 3 weeks. I interviewed at Amazon in Oct 2012
Interview
Two standard phone screens with different developers. First interview asked simple concepts and practices associated with object oriented programming. There was also a heavy focus on data structures. Since Amazon is a global company, they are interested in scalability and efficiency when it comes to development.
First Interview Questions:
1) What is encapsulation and polymorphism?
2) Describe linkedlists, arrays, stacks, queues, priority queues, heaps, and binary trees. What are their complexities and benefits?
3) On a server in a directory with 50,000+ HTML files how would you find and return a count of phone numbers?
4) What is the difference between binary and hex decimal?
5) Design/Code a method that multiples two numbers without using the multiply operator. And what are some tests you would implement (i.e. black box, white box)?
Second Interview Questions:
1) Given a list of acceptable words (dictionary), how would you check to see if a given input is on that list? Complexity and efficiency?
i. How would you complete this task with a dictionary that is too large to fit in ram? Complexity and efficiency?
ii. Now given two input words how would you find and return all available words in between the two words? (i.e. input1= "Cat", input2= "Fish", return all words in between) Complexity and efficiency?
2) Given a singlyLinkedList, write a method that reverses the order of the list. Complexity and efficiency?
Interview questions [1]
Question 1
Just make sure you cover all your basics. They will cover a wide range of topics to see what you know and how you react to difficult questions. Always ask to clarify questions since they are usually ambiguous.
Interviewed for silicon team. Have only been asked about the domain specific knowledge in 1st round and system design in 2nd round and C coding in 3rd round.
The interviews were 50 mins each.
First round with hr screening - 2 leetcode questions then hr manager screening then the loop which consists of 4 interviews each an hour long. The 4 interview questions they asked where three medium leetcode questions. And one system design interview question about how to shadow deploy a test software to millions of users.
Recruiter reaches out after applying through Amazon careers, no referral. Had an initial OA, then after a month had four rounds in two days - three coding one system design. Each round had 30 min behavioral and 30 min coding.
Interview questions [1]
Question 1
Questions were mainly hashmap, sliding window and interval related.