I applied through an employee referral. The process took 4 weeks. I interviewed at ZS Associates (Princeton, NJ) in Sept 2019
Interview
Company's management is horrible. They are not sure of their requirements before interviewing, and do not give priority to the candidate's time. The interviewers are very unprofessional, and want to prove they're smarter than the interviewee, instead of assessing candidates on their skills. The HR is quite incompetent, and doesn't respond to emails of candidates in process. I can only imagine how she would treat others. They gave me good feedback after the onsite interview and said that they're trying to figure out the specif team and position to bring me in. They then asked me to remind them of my salary expectations again. I said the same figure I did in the first round with the recruiter. After that they sent a reject saying "the role didn't capitalize my skill-sets well". Well, ZS, if you don't have the positions or budget to bring people on board, please don't waste the candidate's time. The on-site last 6 hours. I had an awful time, and don't recommend this company to anyone. They are not established in their Data Science practices anyway.
I applied online. The process took 2 weeks. I interviewed at ZS Associates
Interview
After successfully clearing the online assessment, which included both aptitude and technical sections, I was invited to attend an online interview. The entire process, from the assessment to the interview stage, took approximately one to two weeks to complete.
Interview questions [1]
Question 1
I have been asked abiut my resume and projects.
then basics of data preprocessing and machine learning.
I applied through university. I interviewed at ZS Associates (Warangal) in Oct 2025
Interview
In my first-round technical interview, the interviewer started by asking for my introduction, then progressed to a discussion about my projects. The interview concluded with questions evaluating my foundational knowledge of machine learning, performance metrics, basic statistics, and the pandas Python library.
Interview questions [1]
Question 1
Find the 25th percentile of a particular column of a dataset. this is one of the question interviewer asked me
I applied through university. The process took 1 day. I interviewed at ZS Associates (Bengaluru) in Oct 2025
Interview
first, the interviewer asked me to introduce and then asked multiple questions on my projects for 20 min and asked some basic ml questions like what will u do if your model overfit , underfit and asked me to explain decision trees followed by 2 guesstimates and 2 puzzles and finally a simple python question
Interview questions [1]
Question 1
guesstimate how may messages will be sent in one minute in allover india