Zscaler Software Development Engineer (SDE) interview questions
based on 11 ratings - Updated Jan 21, 2026
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80%
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Zscaler interviews FAQs
Software Development Engineer (SDE) applicants have rated the interview process at Zscaler with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 53.1% positive. This is according to Glassdoor user ratings.
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I applied through college or university. I interviewed at Zscaler
Interview
Firstly OA then three technical rounds then HR round.In OA plagiarism is strictly checked.In interview, questions were mainly asked from interview bit.And also most questions were from C and C pointers.
I applied through college or university. The process took 2 days. I interviewed at Zscaler (Mohali, Punjab) in May 2023
Interview
There were four rounds(One coding,Two Technical and On HR round) as we were told one day before the process. In coding round questions were easy . Just related to playing with resizing the array . In 1st technical round I was asked all OOPs concept which are to be told compulsarily in Java and all its implementations 2nd round was also based on core Java.
Interview questions [1]
Question 1
Q. Resize the array with some rules Q. OOPS Q. Implement all pillars with some example
An online assessment is followed by a technical round and a behavioral round. The online assessment was pretty good, not too easy or hard. technical round was pretty difficult. there were also questions regarding react Js.