Three-Round Interview Experience for Amazon
Company Introduction: Amazon’s Preferences for Technical Interview
Amazon’s interview system is renowned for its LP (Leadership Principles), with 14 principles running throughout. The three most prominent features of the technical interview are: behavioral interviews deeply tied to LP, whiteboard coding focused on real-world scenarios, and system design assessing scalability. It is important to note that Amazon’s coding questions may require handling actual business data streams, which differs from other companies’ purely algorithmic questions. System design must be developed in conjunction with the LPs “Customer Obsession” and “Innovation and Simplification.” Behavioral questions should be answered based on the STAR method and be linked to specific LP items.
Interview Process
Round 1: Coding
The process began with a brief self-introduction, followed immediately by coding. The schedule was quite tight, and time was limited, so I felt a bit unprepared when I started the coding task.
Linked list loop problem: Use fast and slow pointers to detect loops in a linked list. The fast pointer moves two steps at a time, while the slow pointer moves one step at a time. If they meet, there is a loop.
Tree level traversal problem: Use breadth-first search (BFS). When implementing BFS for tree traversal, the time complexity is O(n), and the space complexity is O(m). The interviewer was quite interested in time complexity and space complexity. When I discussed this part, the interviewer listened intently.
Round 2: bq+ood
· How do you handle tight deadlines?
My response:
The first thing I do is to break down the task. I start by breaking down the whole task into subtasks. Then I fully determine which subtasks are critical path and which are parts that can be postponed a little bit and won’t affect go-live (e.g. automated tests can be LAUNCHED and then patched).
Then I will weigh and make decisions about which tasks need to be prioritized. If possible, I would delegate some of the tasks to team members or other groups. In the end, we were able to get the core functionality live on time and without any blockers. Both the team and stakeholders were happy with the end result.
· Share how you handle failure.
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Key points:
Avoid recounting a failure that is unrelated to the position you are applying for or the company culture.
Don’t blame coworkers or external factors when describing a failure either. This may make the interviewer think you are unwilling to take responsibility.
Also, you should avoid show contempt or denial of the failure experience and instead demonstrate a positive attitude of learning and growing from the failure.
Round 3: bq
The interviewers were very friendly, and the atmosphere was quite relaxed. I felt that my answers hit the mark, and the interviewer was satisfied.
The first question was about how I resolve conflicts when my decisions clash with others’. This is one of the most classic leadership principle questions. I selected a scenario from my prepared examples that best exemplified customer-obsession and building trust. And the response was positive — the interviewer nodded slightly.
Additionally, they asked about a project experience, such as how you overcame obstacles. In my response, I emphasized the difficulty and complexity of the challenge, focusing on how the solution, though risky, ultimately succeeded.
They also asked about a self-learning experience and how I balance multiple high-priority tasks. The self-learning experience should highlight the process of self-learning, emphasizing one’s strong self-learning abilities and initiative, as well as the value it ultimately brought. This scenario was the most natural and fluent one I presented, with a well-rounded story, and the interviewer was satisfied.
For behavioral interviews, as long as you combine your prepared stories with your learning process, there shouldn’t be any issues.
Interview Summary & Suggestions:
For coding, linked list loop detection must include a mathematical proof. In BFS level traversal code, you must record queue.size() at each level before traversing, otherwise nodes from different levels will be mixed.
Practicing more problems is beneficial for interviews. In OOD design, each class must correspond to at least one LP. The nodding of an interviewer does not mean you will pass the interview. Using a technical solution to reverse-engineer the LP is the ultimate key to securing the interview. It is normal to have unprepared parts during the interview, so there is no need to worry. The interviewer will provide corresponding hints.
The Way to An Amazon Offer
Preparing for an Amazon interview is not just about mastering algorithmic challenges. Demonstrating technical leadership in behavioral interviews is equally critical. Systematic preparation not only helps you pass the interview but also proves to Amazon that you are the person who can change the world with code. If you don’t know where to start, Programhelp will guide you every step of the way.
