Amazon.com Software Development Engineer Interview Questions

Updated Apr 15, 2015
Updated Apr 15, 2015
821 Interview Reviews

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Helpful (330)  

Software Development Engineer Interview

Accepted Offer
Positive Experience
Difficult Interview
Accepted Offer
Positive Experience
Difficult Interview

Application

I applied through other source. The process took 4+ monthsinterviewed at Amazon.com (Seattle, WA) in May 2013.

Interview

Called out of the blue, asked if I'd be interested in interviewing. Still not entirely sure how they got my name. Had first phone interview the next week, asked no personal questions, all technical in nature. Total of 3 phone interviews and an in-person trip out to Seattle.

Took about 4 months start to finish. The people in the in person interview were wonderful. Very smart, laid back, and understanding. Got lunch, small tour of campus, and learned what I'd be doing. Got the offer 2 business days after the in person interview.

Sadly, I signed a NDA and I respect the terms of that. As such, I can't give you any specific questions, but I'll gladly give you the best advice I have.

Phone Interviews :

Phone interviews are sucky by nature. Coordinating a call from west to east coast alone is painful, add the fact that phones just take away the benefits of body language, and just make it harder to hear, and you've got a recipe for disaster. But fear not! Here are some helpful hints, some of which are obvious, some of which are not.

1. Get ready ahead of time. I just mean, get to the area you'll be doing the interview beforehand. I'd recommend an hour or more, just to get your nerves ready. Breathe, get used to the surroundings, and get everything laid out ahead of time. Which brings me to...

2. I know it's a "programming" interview, but for the love of all things good, have a pen and paper ready and at your disposal. Bring a backup pen. Much like a printer, the pen will fail at the worst possible time. You may also need a laptop, as I was asked to do "on the fly" programming. But close anything and everything distracting. Speaking of...

3. Pick a spot where there are no distractions. You'll want your undivided attention on this interview. Don't have BookTweet or FaceSpace or MyGram or that crap open if you have a laptop. And I personally wouldn't pick a public space, you never know when an annoying parent will put their screaming child right beside you.

4. Breathe. Just breathe. Take a moment, stretch, and remember you got this. If you have trouble hearing, don't be afraid to ask again. Don't be afraid to say you don't know. Do as for clarifications, and state assumptions up front. Always re-state the problem as you understand it.

As for the content : For the love of God, know what a time complexity is, and how to determine it for any and all code you write. Know the time complexities of all sorts. Know all data structures, how to use them, and properties of each. (Insertion time, deletion, etc) Generally know what heck you're talking about. But don't talk too much. You don't want silence at any point really, but you certainly don't want to let the interviewer not get a word in. Know graph theory, tree theory, and all the fun stuff associated with more "complex" structures. Understand what your language does behind the scenes, as far as GC and compiling go. Know how your language use internal structures to manage the code/objects you write.

**Continued below**

Negotiation

As a recent grad, there wasn't much room for negotiation.

Other Interview Reviews for Amazon.com

  1. Helpful (24)  

    Software Development Engineer Interview

    No Offer
    Positive Experience
    Easy Interview
    No Offer
    Positive Experience
    Easy Interview

    Application

    I applied online. The process took 3 weeksinterviewed at Amazon.com.

    Interview

    Applied online in December. Received mail within 2 days. Online assessment in next 7 days. This test includes 7 questions in 20 minutes. Questions include correcting the already given code so that all the test cases work perfectly.
    Phone interview call in 1 week. 45 minutes. 2 questions.
    1) Find the second last node of a linked list.
    2) Find Nth node from the last in a given linked list.Find it's complexity.

    One question on recent project. Waiting for response.

  2.  

    Software Development Engineer Interview

    No Offer
    Neutral Experience
    Average Interview
    No Offer
    Neutral Experience
    Average Interview

    Application

    I applied through college or university – interviewed at Amazon.com.

    Interview

    Two forty-five minute interviews back to back. Technical interview with just a few questions about resume and past work experience. Expected to code with test cases. Not exactly a tough interview but requires considerable preparation. Mainly focused on data structures and algorithms with 2 questions on these per interview.

    Interview Questions

  3.  

    Software Development Engineer Interview

    No Offer
    Neutral Experience
    Average Interview
    No Offer
    Neutral Experience
    Average Interview

    Application

    I applied through a recruiter. The process took 2 daysinterviewed at Amazon.com (Seattle, WA).

    Interview

    Online coding challenge followed by a 4-hr on-site interview.

    Interview questions ranged from easy to very difficult. The easy part I could have done much better but I started coding right away (because I was asked to) BEFORE I had a plan of how I could solve the problem. As a result, what I wrote on the whiteboard was so messy even I myself got confused. Practicing writing code on paper was not enough, you needed to practice with an audience, and made sure he/she understands what you're trying to do from start to finish. Word of advice, start designing with your interviewer (regardless of how much they push you to start coding), before coding.

    Interview Questions

    • NDA signed. Don't think I can disclose... Nothing was too unexpected anyway.   Answer Question
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  5.  

    Software Development Engineer Interview

    No Offer
    Positive Experience
    Difficult Interview
    No Offer
    Positive Experience
    Difficult Interview

    Interview

    I appeared for a phone technical interview. This was in 2012, a little while back. I am not sure if the process is changed. All questions were in data structures and algorithms. The questions where in Java. I had trouble understanding the English accent, looked like an european accent to me. I was asked to write a program through online collaboration tool.

    Interview Questions

    • What happens when there is a collision in hashmap   Answer Question
    • Write a program to verify whether the given tree is a binary search tree or not without using recursions   Answer Question
  6. Helpful (2)  

    Software Development Engineer Interview

    Declined Offer
    Neutral Experience
    Easy Interview
    Declined Offer
    Neutral Experience
    Easy Interview

    Application

    I applied through an employee referral – interviewed at Amazon.com.

    Interview

    It is late in Feb. I got reference from one of my friend. I had two phone interviews at first. Each interview consist of 3 technical questions. Then I am asked to take an online test, including IQ problem and algorithm coding ( not very hard). Also, it contains reading and quantitative reasoning. After that, I was asked to do a team-work evaluation.

    Interview Questions

    • Given a sorted array, write a program to decide if two elements sum up to a third.   Answer Question
  7.  

    Software Development Engineer Interview

    No Offer
    Positive Experience
    Easy Interview
    No Offer
    Positive Experience
    Easy Interview

    Application

    I applied through college or university – interviewed at Amazon.com.

    Interview

    I was asked to give an online assessment test as the first round. It consisted of 2 easy string based questions and around 24 reasoning questions. The coding round was for 70 minutes and the reasoning questions had to be done in 34 min. You could compile your code and check if you pass all the test cases before submitting.

    Interview Questions

  8.  

    Software Development Engineer Interview

    Accepted Offer
    Positive Experience
    Average Interview
    Accepted Offer
    Positive Experience
    Average Interview

    Application

    I applied through a recruiter. The process took 2 weeksinterviewed at Amazon.com in April 2015.

    Interview

    5 successive 45 minute 1 on 1 interviews where they start off with 1-2 personality/story questions, do 1 whiteboard coding problem, and then give you 2-5 minutes to ask your own questions. They send you a link to a "what to expect during your Amazon.com interview" video that's spot on.

    Interview Questions

    • "tell me about a time you failed, what did you learn?"
      "tell me about your most difficult success, what techniques did you use to succeed?"
      "tell me about a time you had an interpersonal problem, how did you resolve it?"

      All technical questions were problem solving based on basic algorithms and data structures (they prepare you with a list in the "what to expect" video.
       
      Answer Question
  9.  

    Software Development Engineer Interview

    No Offer
    Positive Experience
    Difficult Interview
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online – interviewed at Amazon.com.

    Interview

    Phone interview with Human resources department. A week later I got an email for technical phone interview. There was online coding question and few oral technical questions. There was couple of behavioral questions also.

    Interview Questions

  10.  

    Software Development Engineer Interview

    Accepted Offer
    Positive Experience
    Average Interview
    Accepted Offer
    Positive Experience
    Average Interview

    Application

    I applied online – interviewed at Amazon.com.

    Interview

    Applied online, and then after review of resume they mailed about scheduling the telephonic interview for about 45 min.
    Then there were two interviewer who first started with a question about my resume, about projects and then some technical question.

    Interview Questions

    • They asked about the project that you are proud about.
      Then some technical questions like difference between hashmap, hashtable.
      Finally asked to code - remove duplicate elements from a list.
       
      Answer Question

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