Palo Alto Networks Backend Engineer interview questions and process

Updated · 11 sources

Hiring Pulse: where Palo Alto Networks candidates are right now

Dated status reports from public Reddit threads and anonymous PortLume reports, updated Oct 15. Not official Palo Alto Networks data.

  • 1 status reports in the last 7 days
  • Not enough data yet: median from final interview to a decision shows at 5+ people
  • Latest movement: 1 interview reported since Sep 18

Latest Palo Alto Networks hiring reports

Candidates rate the Palo Alto Networks Backend Engineer interview Medium-Hard: Reports describe an online test followed by multiple interviews mixing DSA, HLD/LLD, SQL and core CS, with senior loops pushing for optimal solutions and deep design discussion. Reports describe 4 rounds, from Online Assessment to Hiring Manager / Director of Engineering Round.

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Palo Alto Networks Backend Engineer interview rounds

  1. Online Assessment: Two easy/medium coding questions plus about 30 aptitude MCQs for new grads. Senior candidates also report a coding test invite before any interviews.
  2. Technical Round 1: DSA + Project Discussion
  3. Technical Round 2: System Design (HLD/LLD) + Backend/DBMS
  4. Hiring Manager / Director of Engineering Round

Questions reported in Palo Alto Networks Backend Engineer interviews

  1. Design a social media website (high-level design).
  2. A straightforward string manipulation coding question.
  3. A medium-level coding question based on a hashmap.
  4. Several SQL queries.
  5. Discussion of DBMS and backend concepts, mainly REST APIs.
  6. Time complexity of PriorityQueue poll() operation.

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Palo Alto Networks Backend Engineer interview: quick answers

How many rounds are in the Palo Alto Networks Backend Engineer interview?

Public reports describe 4 rounds for the Palo Alto Networks Backend Engineer interview: (1) Online Assessment, (2) Technical Round 1: DSA + Project Discussion, (3) Technical Round 2: System Design + Backend/DBMS, (4) Hiring Manager / Director of Engineering Round.

Is the Palo Alto Networks interview difficult?

Public reports put the Palo Alto Networks Backend Engineer interview at Medium-Hard difficulty. Reports describe an online test followed by multiple interviews mixing DSA, HLD/LLD, SQL and core CS, with senior loops pushing for optimal solutions and deep design discussion.

Does Palo Alto Networks ask DSA in Backend Engineer interviews?

Yes. Rounds that involve coding: Technical Round 1: DSA + Project Discussion. Reports describe an online test followed by multiple interviews mixing DSA, HLD/LLD, SQL and core CS, with senior loops pushing for optimal solutions and deep design discussion. Data structures and algorithms is among the skills reports mention most.

Sources

Based on 11 public reports: LeetCode Discuss (8), Blind (2), YouTube (1), last updated Oct 2026.

Compiled by Adarsh Sharma from public candidate reports. Unofficial guide: PortLume AI is not affiliated with Palo Alto Networks.

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Last round at Palo Alto Networks is usually HR: Palo Alto Networks HR interview questions and answers.

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