Zscaler Coding Interview Questions (2026)
Most-reported questions and how to practice them
15 coding questions reported by candidates for Zscaler, sorted by how often they were reported. Source: community-sourced LeetCode company lists.
What the Zscaler question data shows
Of the 15 questions reported for Zscaler, 40% are medium, 40% are hard and 20% are easy. The most reported are Maximum Strong Pair XOR I, Maximum Strong Pair XOR II, Day of the Year, Apply Operations to Make Sum of Array Greater Than or Equal to k, Largest Number After Digit Swaps by Parity.
This list comes from community-sourced LeetCode company lists. It covers coding questions only. It does not tell us how many rounds Zscaler runs, what each round covers, or what it pays, and those change by role, level and team, so we do not list them. Ask your recruiter what each round covers, and check the company's careers page.
Prepare for the rest of the loop with the coding interview patterns guide, the system design framework, and the STAR method guide. Written by Kieron.
Practice what you read with a free AI mock interview, see how the tools compare in our AI interview copilot comparison, or check Aissence pricing.
Zscaler Interview Questions
15 LeetCode questions — sorted by frequency. Question frequency is community-sourced from public interview reports and may not reflect the current process; verify details with the employer.
Last reviewed: September 5, 2026 · Source: LeetCode company-wise interview questions (community reports) · Reviewed by the Aissence Editorial Team.
Maximum Strong Pair XOR I
Maximum Strong Pair XOR II
Day of the Year
Apply Operations to Make Sum of Array Greater Than or Equal to k
Largest Number After Digit Swaps by Parity
Optimal Account Balancing
Minimum Replacements to Sort the Array
Minimum Increment to Make Array Unique
LRU Cache
Robot Bounded In Circle
Number of Divisible Triplet Sums
Word Ladder
Set Matrix Zeroes
Integer to English Words
Reverse Nodes in k-Group
Tips for Success at Zscaler
Start with the 15 most reported Zscaler questions, then work down the list.
Mediums are the bulk of the list (40%), so spend most of your time there.
Time yourself: 20 to 30 minutes per medium, then explain your solution out loud as if to an interviewer.
After each problem write down the pattern and the signal that revealed it. Patterns transfer to problems you have not seen.
Pair coding practice with a system design framework and prepared behavioral stories; most loops include more than coding.
How to Practice for Zscaler Interviews
Practice answering out loud with an AI interviewer built from your resume and the job description, and get a score and specific fixes for each answer. We are not affiliated with Zscaler, and the mock interview is general practice rather than a simulation of Zscaler's own format.
- ✓ Free mock interview built from your resume and the job description
- ✓ Desktop Interview Copilot for live interviews, where the rules allow it
- ✓ Behavioral practice with feedback on structure and specifics
- ✓ System design practice with follow-up questions
Frequently Asked Questions
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