I applied online. The process took 2 weeks. I interviewed at Zscaler (San Francisco, CA) in Mar 2021
Interview
Good interview, interviewer was accommodating. 4-5 rounds. First one was coding and then the next two are video technical rounds. Last one is with a Manager(technical and behavior). It was nothing out of the box. Software and System Design and DS/A are quite important. Under the hood explanation for some of the data structures. You'd have to write code while discussing your thought process to the interviewer.
Suggestion: Please remember that even if they tell you that the interview is going to be language based knowledge questions, it's never that. Always know Data Structures, common Algorithms, System Design, Performance Optimization(Tradeoffs), Cloud and security knowledge, your projects and work. Research on the company more.
Interview questions [1]
Question 1
Architecture of the system I worked on.
Design patterns (briefly).
Dictionary(hash function), LinkedList, Trees, Graphs.
API design, websockets, Performance optimization.
I cleared the online test and after that 20 students were shortlisted and interview process was of 3-4 rounds in 1st round they asked me about Operating System and Computer Networks.
Interview questions [1]
Question 1
Questions Related to IPV4 and Operating System Round Robin Schedulung
I applied through a recruiter. I interviewed at Zscaler (Tel Aviv-Yafo)
Interview
I went through the all process.
step 1: Intro Zoom chat with the team lead.
then, 3 technical interviews on site. Design + Leetcode. the design questions were DB-oriented, and the leet code question was find min in the stack in O(1) and LRU Cache.
after 3 technical interviews, I had an interview with the r&d director and HR. After more than a week with no response, I reached out to them and it took them a while to respond they won't give me an offer, Really disrespectful that they kept me on hold and told them so long to give me a response.
I applied online. The process took 2 weeks. I interviewed at Zscaler (Gurgaon, Haryana) in Feb 2025
Interview
Firstly a oa round was held and then two leetcode medium questions was ask in 1 round and again there was technical interview and then there was hr round where basic behavioural question were asked