Twitter Data Scientist Interview Questions | Glassdoor

Twitter Data Scientist Interview Questions

Updated Dec 21, 2017
17 Interview Reviews

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Data Scientist Interview

Anonymous Interview Candidate
No Offer
Neutral Experience
Difficult Interview

Application

I applied online. The process took 3 weeks. I interviewed at Twitter in November 2017.

Interview

3 weeks after I applied, I received a link to a coding challenge. This link is set automatically so you don't have anyone to talk to in case you have questions. You have one week to complete the challenge but it's supposed to be done in 90 minutes if you want to get through.

Interview Questions

  • Three exercises. One involving SQL, another one involving dynamic programming and one last involving tries.   1 Answer

Other Interview Reviews for Twitter

  1.  

    Data Scientist Interview

    Anonymous Interview Candidate in Boston, MA
    No Offer
    Negative Experience
    Average Interview

    Application

    I applied online. The process took 4+ weeks. I interviewed at Twitter (Boston, MA) in September 2017.

    Interview

    I applied online. The process took about a month. 2 phone interviews with HR managers, test and personal interview with team members (It took about 3 hours). Free lunch was served and people were friendly.

    Interview Questions


  2.  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Negative Experience
    Difficult Interview

    Application

    I applied online. The process took a week. I interviewed at Twitter.

    Interview

    HR set me up with technical interview, no HR screening. The interview was very bad, the guy was super inexperienced. I had really hard time understanding his question, and the coding part is even worse. I was interrupted every 1 min, couldn't code at all as this person interrupted me with something when I started write the code. Also he doesn't know the language I was coding.

    Interview Questions

  3. Helpful (1)  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Negative Experience
    Average Interview

    Application

    I applied through a recruiter. The process took 1+ week. I interviewed at Twitter in September 2016.

    Interview

    I was supposed to have a 45 minute technical coding screen but the guy was booked too tightly and only had 20 minutes (told me this at the beginning of the call). So instead of a technical coding screen it turned into a series of random business case style interview questions. Overall a pretty terrible - no wonder Twitter is plummeting as a company

    Interview Questions


  4. Helpful (3)  

    Data Scientist Interview

    Anonymous Interview Candidate in San Francisco, CA
    No Offer
    Neutral Experience
    Average Interview

    Application

    I applied online. The process took a week. I interviewed at Twitter (San Francisco, CA) in June 2016.

    Interview

    I was contacted fairly quickly after applying online. I didn't find any of the interview questions very hard. What struck me was the type of questions: how-do-you-solve/do-xyz, where xyz is specific. Nowadays it seems any job involves data analysis is called data scientist. As a statistician, my job search 95% of the time led me to data scientist position postings. In the pre-data-science period, statistician interviewers were composed of at least half internal data customers from various domains. They wanted to know how I can help them achieve their research or business goals with data. In contrast, all of my data scientist interviewers (not just at Twitter) were younger and more computing savvy data analysts from quantitative background. They wanted to know if I know how to do xyz, where xyz is something they themselves have encountered. This difference is important for candidate and employers of data scientist.

    Interview Questions

    • What features would you use to build recommendation algorithm for users.   1 Answer

  5. Helpful (1)  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Positive Experience
    Average Interview

    Application

    I applied online. The process took 2 weeks. I interviewed at Twitter in April 2016.

    Interview

    The recruiter contacted me to do a phone interview. It is all about technical questions and programming skills. The whole process is doing a study case of the Hypothesis test. The Hypothesis is like "Following" your followers back increases the number of "likes" you receive on your tweets

    Interview Questions


  6. Helpful (2)  

    Data Scientist Interview

    Anonymous Interview Candidate in San Francisco, CA
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online. The process took 6 weeks. I interviewed at Twitter (San Francisco, CA) in February 2016.

    Interview

    I applied in Twitter by forwarding my resume to a HR whom I met in a conference. Since, I live in India and I applied for Twitter, San Francisco, the whole process took close to 2 months. There were total 10 rounds of interviews.

    The first round was with Product Manager which was more like a exploratory round. He mainly asked domain specific question to see whether I would be a good fit in his team.
    The next three rounds were conducted in a span of three weeks. The questions were mainly related to Machine Learning, Statistics with focus on experimentation, Algorithms.

    After 4 rounds, the team decided to conduct remaining interviews on-site, but due to visa issues I had to give remaining 6 interviews online on a single day. The questions were mainly based on Algorithms ( 4 rounds ), Machine Learning and Statistics.

    Reason for rejection : Coding rounds did not went well.

    Interview Questions


  7. Helpful (5)  

    Data Scientist Interview

    Anonymous Interview Candidate in San Francisco, CA
    No Offer
    Neutral Experience
    Difficult Interview

    Application

    I applied through an employee referral. The process took 3 weeks. I interviewed at Twitter (San Francisco, CA) in September 2015.

    Interview

    phone interview with hiring manager, got onsite invitation the same day
    onsite, meet with 6 engineers. one's data scientist, all others are software engineer.
    algorithm question mostly, some machine learning question, math/application case.
    also, one system design question. how large scale machine learning work on distributed system

    positive feedback, went through hiring committee. However, no offer yet. They're cutting jobs, so bad timing!

    Interview Questions

    • algorithm(50%), machine learning(30%), system design(20%)   Answer Question
  8.  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Negative Experience
    Average Interview

    Application

    I applied online. The process took 2+ months. I interviewed at Twitter in March 2015.

    Interview

    It was a fair interview process with multiple phone screens, case study and on-site. Team was very high-caliber and had a diverse background. Phone screens and case study involved problems related to the role. Disappointed however with the recruiter and the company in that they didn't have the courtesy of responding to me with a decision after the interview at all.

    Interview Questions


  9. Helpful (3)  

    Data Scientist Interview

    Anonymous Employee
    Accepted Offer
    Positive Experience
    Average Interview

    Application

    I applied through college or university. The process took 2+ months. I interviewed at Twitter in February 2015.

    Interview

    Firstly applied for Software Engineer Intern because they said they will not have Data Scientist Intern this year.
    1. Online code challenge (easy).
    2. 45-minute on-campus interview about previous CS projects, a white-board coding problem.
    Then they reassigned me to the "non-existing" Data Scientist Intern application after this round.
    3. 45-minute phone interview about a dynamical programming question, plus some brain storms about user modeling.
    4. 3 45-minute on-site interviews of a composition of coding, stats, machine learning, algorithm and previous experience.
    5. Got the offer.

    Interview Questions


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