Google Engineering Interview Questions | Glassdoor

Google Engineering Interview Questions

Updated Dec 15, 2016
60 Interview Reviews

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Engineering Interview

Anonymous Interview Candidate in Mountain View, CA
No Offer
Positive Experience
Average Interview

Application

The process took 4 weeks. I interviewed at Google (Mountain View, CA) in August 2010.

Interview

Unlike many others have mentioned, the interviewers were all very pleasant and respectful. The whole process feels like a giant aptitude test, but no crazy brain teasers like many suspect. That means everything listed on your resume is subject to scrutiny. Some questions were not formulated the best way and therefore seemed trickier than they really were. If you don't feel well enough on the day of the interview, I suggest you try to reschedule. You really need to make sure your mind will be at its sharpest on the day of the interview.

Interview Questions

  • How do you know two proportions from the same population for answers to the same question are significantly different?   Answer Question

Other Interview Reviews for Google

  1.  

    Engineer Interview

    Anonymous Interview Candidate in Mountain View, CA
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online. The process took a week. I interviewed at Google (Mountain View, CA) in July 2010.

    Interview

    Very competent interviewers, be sure you know the "tricky" algorithms and "big O".

    A very positive, though unsuccessful, process.

    Interview Questions

    • The key thing was understanding how the java garbage collector worked.   2 Answers
  2.  

    Engineer Interview

    Anonymous Interview Candidate in Mountain View, CA
    No Offer
    Positive Experience
    Average Interview

    Application

    I applied through an employee referral. The process took 1 day. I interviewed at Google (Mountain View, CA) in June 2010.

    Interview

    My on-site interview had 5 rounds. The questions were quite simple. I went in expecting to be grilled on a lot of theoretical computer science, but the questions were of a very practical nature. All the interviewers were extremely nice and helpful with giving hints when I got stuck. Overall, a very positive experience even though I didn't get hired.

    Interview Questions

    • A lot of whiteboard coding. I found the algorithm & datastructures questions to quite easy. I did badly in one of the coding rounds, mostly because I was not used to somebody looking over when I'm writing code and being conscious, made me make some very silly mistakes.   Answer Question
  3.  

    Engineering Interview

    Anonymous Interview Candidate in Mountain View, CA
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online. The process took 3+ weeks. I interviewed at Google (Mountain View, CA) in May 2010.

    Interview

    Got the email from the recruiter that my resume has been short listed. Then she called me and discussed my back ground and the opportunity. Of course, thanked me for my interest in Google :) I had 2 phone interviews and then I was called for onsite interview. I met with 4 different googlers. Interviews were relaxed, and more of brainstorming sessions. I loved the whole process. Way to go Google!

    Interview Questions

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  5.  

    Engineering Interview

    Anonymous Interview Candidate in San Jose, CA
    No Offer
    Positive Experience
    Easy Interview

    Application

    I applied through other source. The process took 2 weeks. I interviewed at Google (San Jose, CA) in April 2010.

    Interview

    After recruiter's phone call with general organizational questions, I had short technical phone interview.
    Interviewer was late for 10 minutes, thus we talked only 30-35 min. For this time he was able to ask me not very much: some of my previous experience, most difficult bug I've faced recently, and one technical question with coding in shared doc. After that he let me to ask him something about google. He answered one question and finished interview, so I had no change to fund out everything I planned. Also I had a feeling, the guy was not interested to be there, coz he was not leading me through resolution process and talked very little. Also his communication skills could be better - I hardly understood his questions in Indian English and asked to repeat several times. Google should sent better skilled and more open English speakers to interview, IMHO.
    I successfully resolved technical coding question in two different ways (time and memory efficient) with commenting my resolution thoughts, but have got negative response from recruiter in 1 week.

    Interview Questions

    • Write a code to find out if two string words are anagrams   4 Answers
  6. Helpful (1)  

    Engineering Interview

    Anonymous Interview Candidate in Mountain View, CA
    No Offer
    Positive Experience
    Easy Interview

    Application

    The process took 2 days. I interviewed at Google (Mountain View, CA) in March 2010.

    Interview

    first a phone interview with some technical questions that were straightforward. invited to the googleplex for 1:1 interview with 4 people. pretty relaxed interview about background and skillsets.

    informed a week later that it was not a fit for the position.

    Interview Questions

  7. Helpful (2)  

    Engineering Interview

    Anonymous Interview Candidate in Mountain View, CA
    Declined Offer
    Neutral Experience
    Average Interview

    Application

    I applied through a recruiter. The process took 2+ months. I interviewed at Google (Mountain View, CA) in January 2010.

    Interview

    First there is a phone interview. Then you go to the company campus and sit in a room and stressed people turn up late to ask you a series of technical questions of increasing difficulty. Some of the interviewers were interested in thinking about their problems, but most were acting more like it was their duty to come to these meetings. One interviewer was outright rude when I pointed out that he was in fact wrong in his solution to a problem he posed. Generally the process felt mechanised, impersonal and ineffective. Having worked in similar firms and been involved in the hiring process there it felt that Google was more interested in being different than actually finding good candidates. The food on offer was so on, nothing special compared with other bay area high tech companies.

    Interview Questions

    Reasons for Declining

    Took too long to make an offer.

  8. Helpful (1)  

    Engineer Interview

    Anonymous Interview Candidate in Cambridge, MA
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied through an employee referral. The process took 2+ months. I interviewed at Google (Cambridge, MA) in January 2010.

    Interview

    Lots of red tape and bureaucracy to get to the on-site. Then a bunch of really good questions in a series of 5 one on one interviews. Some basic questions but then lots of algorithmic stuff, pointer arithmetic, optimization questions, scaling questions. LOTS of questions about how to make things work well on 100k+ computers at once. They also do a surprisingly good job of selling a company that practically sells itself.

    Interview Questions

    • Solve the "game of life" problem in C++ so that it will be both OO and efficient. Scalability and parallelism are also pluses.   1 Answer
  9.  

    Engineering Interview

    Anonymous Interview Candidate in Mountain View, CA
    No Offer
    Negative Experience
    Difficult Interview

    Application

    I applied through a recruiter. The process took 4+ weeks. I interviewed at Google (Mountain View, CA) in January 2010.

    Interview

    Google basically does not care what you have done, and doesn't interview you for any particular position. They mainly want to know if you are talented at answering academic computer science questions. Does this build a good company? I don't think so, but it's up to them to decide that, I guess. Six interviewers asked me incredibly detailed data structure and algorithm questions. Nothing that anyone asked me would have distinguished me from a recent graduate. I thought I did pretty well, but apparently not well enough. My recruiter sounded as surprised as I was that I didn't get an offer. Apparently anyone who interviews you can veto - so it's everyone's loss that one of my interviewers was a terrible interviewer. Be sure to buy, and at least skim, a copy of "Programming Interviews Exposed; Secrets to Landing Your Next Job" (Mongan/Suojanen/Giguere?), recommended directly by Google recruiters. Best of luck.

    Interview Questions

    • Let's say you have a lot of numbers and you want to sort them. What do you do?   1 Answer
  10.  

    Engineering Interview

    Anonymous Interview Candidate in Mountain View, CA
    No Offer
    Neutral Experience
    Difficult Interview

    Application

    I applied online. The process took 2 weeks. I interviewed at Google (Mountain View, CA) in November 2009.

    Interview

    Applied for an entry-level engineering position online. Was contacted pretty quickly by an HR rep, who checked my basic credentials (school, when I could start, etc) and scheduled two phone interviews with engineers.

    I was expecting some of those weird "Google" questions like "How many ping pong balls can fit in a school bus?" but apparently they don't ask anything like that anymore. Most of the questions were about algorithms and data structures, so definitely brush up on those. (Hint: when in doubt, just say you'll use a hash table)

    Interview Questions

    • How can you find a cycle in a singly-linked list (a place where the last node links back to a previous node)?   1 Answer
    • Given two arrays of integers, return a new array containing only the common elements.   1 Answer
    • How would you write an algorithm to search across many machines?   1 Answer

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