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SecurityProduct company

Zscaler

Runs a cloud security platform that secures user, application and workload connections using a zero trust model.

Not known5 stage process documentedFounded 2007
Headquarters

San Jose, California, United States

Headcount

5,000 and up

5,000 or more people
Work model

Not known

Hiring

Not known

Not enough signal to say. Check the careers page directly.
Where to apply

No careers page on file yet. Try their LinkedIn or the job boards below.

Website

Ask for a referral to Zscaler

A referral only means something if the person giving it can actually speak to your work. I will refer you where I know someone on the inside and your profile genuinely fits the role, and I will tell you plainly when I cannot. Either way you get an answer, and a straight one.

  • I read every request. A reply takes a few days, sometimes longer.
  • I will not refer someone for a role their profile does not fit. It wastes your time and costs me the contact.
  • Where I cannot refer you, I will say why, and point you at the way in that does work.
  • Nothing you send here is shared with anyone without you agreeing to it first.

If you found the opening, paste it. It tells me which team you mean.

A Drive, Dropbox or personal-site link is fine. Make sure it opens without a request for access, or I cannot read it.

At least a short paragraph. This is what I would be putting my name behind, so specifics beat adjectives.

Comma separated, up to six. Things you would be happy to be tested on.

How they hire

Manager candidates are also assessed on Zscaler's leadership principles. Engineering rounds vary by team.

  1. 1

    Application review

    Official
    Application screen

    Resumes are screened for impact, scope of experience, problem solving, collaboration and a growth mindset.

  2. 2

    Recruiter conversation

    Official
    Recruiter screenRemote

    Covers the role, location, pay and culture fit.

  3. 3

    Online assessment

    Reported
    Online testRemote

    Candidates report a HackerRank test with coding problems and multiple choice questions on computer science basics.

  4. 4

    Interviews

    Official +1
    Panel interviewRemote

    Several interviews that Zscaler says test role knowledge, general problem solving and culture fit. Engineers report coding, system design, a networking and Linux round and a manager round.

    CodingSystem designNetworking
  5. 5

    Decision and offer

    Official
    Offer

    Feedback is reviewed and the recruiter shares the offer and benefits.

What comes up

Recurring themes from candidate accounts, not a question bank. Nobody is served by leaked question lists, least of all you in the interview.

  • Networking and systems fundamentals

    Reported

    Candidates report questions on TCP/IP, TLS, DNS and Linux debugging, which fits a cloud security product.

  • TOPIC values

    Official

    Culture fit is judged against Teamwork, Ownership, Passion, Innovation and Customer Obsession.

  • Unassisted work

    Official

    Zscaler stresses that it wants to see your own direct, unassisted abilities during assessments.

Worth reading before you apply

From the Sefism resource library, matched to the rounds above.

Roadmap
Coding Interview Playbook

A structured learning path through coding interview preparation that brings together data structures and algorithms fundamentals, recursion and the pattern-based approach to coding questions in one order. It totals 77 chapters and 1,054 lessons, with quizzes, flashcards and a certificate. Use it when you have plenty of material but no clear plan for what to study first.

  • Job search
  • DSA
  • Career
Design Gurus · Interview Prep · 3 to 6 months
SubscriptionDetails
Roadmap
FAANG Coding Interview Roadmap

A bundle of five company-specific question courses covering the problems most often reported from Meta, Microsoft, Amazon, Google and Oracle coding rounds, each split into easy, medium and hard sets with worked solutions. It suits candidates who already know the core patterns and have a loop booked at one of these companies, and want to rehearse on the questions those interviewers are known to ask.

  • Job search
  • DSA
  • Career
Design Gurus · Interview Prep · 3 to 4 months · Advanced
SubscriptionDetails
Course
Grokking Tech Salary Negotiations

A practical course on negotiating compensation in tech, from preparing and building a strategy to specific tactics, the full package beyond base salary, handling multiple offers and asking for a raise. It has tailored sections for fresh graduates and experienced engineers. It suits anyone with an offer coming, and anyone who has ever accepted the first number out of discomfort.

  • Career
  • Job search
Design Gurus · Career Growth · 1 week
SubscriptionDetails
Tool
Resume Review

A paid, human review of your resume by experienced engineers and hiring managers from large technology companies, returned in three to five business days with line-by-line suggestions, proposed rewrites of bullet points and applicant tracking system advice. It suits engineers whose resume is already reasonably solid and who want detailed feedback from people who screen engineering resumes for a living before a job search.

  • Career
  • Job search
Design Gurus · Career Growth · Minutes
$279Details
Platform
Hacker101

Hacker101 is HackerOne's free web security training hub, combining video lessons with a hands-on capture-the-flag exercise, aimed at both programmers curious about bug bounty work and more experienced security professionals. It is entirely free with no account paywall, and pairs naturally with reading HackerOne's own vulnerability disclosure guidelines before attempting any real-world bug bounty programme. Bugcrowd runs a similarly free alternative, Bugcrowd University, worth knowing about even though this entry focuses on Hacker101.

  • Career
  • Job search
  • Testing
HackerOne · Other · Beginner
FreeDetails
Roadmap
Sefism AI Security Roadmap

A nine-stage path for securing LLM apps and AI agents, or testing them as a red-teamer, with one path for each: security foundations, how LLM apps break, the OWASP LLM and agentic lists and MITRE ATLAS, layered defences against prompt injection, agent, tool and MCP security, the data and model supply chain, red-teaming and security evals, monitoring and incidents, and a route into the work. It suits developers and security learners who can already build. By the end you have a practice app defended or assessed end to end.

  • AI
  • Security
  • Testing
  • Career
Sefism · AI & Machine Learning · About 230 hours, 23 weeks at 10 hours a week · Intermediate
FreeDetails
Browse the whole library

What it pays

Nothing collected for this company yet, and nothing worth guessing at. A made-up range is worse than no range because people negotiate against it.

Add to the Zscaler page

This library is only as good as what people who have been through it are willing to share. Most of these companies have no hiring process documented anywhere, and one account of what the rounds actually were is worth more than anything I can research from the outside.

What are you adding?

This decides how the claim is labelled on the page. Only someone representing the company can produce an “official” label, and I check that separately.

Year and month.

Comma separated topics, not the questions themselves.

Round by round is ideal: what each one was, how long, remote or in person, and what it covered.

Credit

Anonymous is the default. If you keep it anonymous, nothing identifying you reaches the page: it is published as a candidate account and your name stays with me. Never send anything covered by an NDA, and never send a take-home or a question paper.

Universities they recruit from

No sourced university links yet. A campus drive, a career fair appearance or an internship partnership is what puts a university here.

Add to the Zscaler page

This library is only as good as what people who have been through it are willing to share. Most of these companies have no hiring process documented anywhere, and one account of what the rounds actually were is worth more than anything I can research from the outside.

What are you adding?

This decides how the claim is labelled on the page. Only someone representing the company can produce an “official” label, and I check that separately.

Year and month.

Comma separated topics, not the questions themselves.

Round by round is ideal: what each one was, how long, remote or in person, and what it covered.

Credit

Anonymous is the default. If you keep it anonymous, nothing identifying you reaches the page: it is published as a candidate account and your name stays with me. Never send anything covered by an NDA, and never send a take-home or a question paper.

How to actually get seen

Put measurable impact on your resume, since Zscaler says that is what screening looks for. Revise networking and Linux basics as well as coding.

Sources

Whole profile last checked 2026-09-22.

Interviewed at Zscaler? Fill in what changed.

Processes change, rounds get added, tests get replaced. If what you went through was different from what is on this page, tell me and I will update it.

Want me to refer you here?

Send me the role, your CV and a few honest paragraphs on why you fit it. Where I know someone inside and your profile matches, I will make the introduction. Where I cannot, I will tell you why and point you at the route that does work. You get an answer either way.

Ask for a referral to Zscaler

A referral only means something if the person giving it can actually speak to your work. I will refer you where I know someone on the inside and your profile genuinely fits the role, and I will tell you plainly when I cannot. Either way you get an answer, and a straight one.

  • I read every request. A reply takes a few days, sometimes longer.
  • I will not refer someone for a role their profile does not fit. It wastes your time and costs me the contact.
  • Where I cannot refer you, I will say why, and point you at the way in that does work.
  • Nothing you send here is shared with anyone without you agreeing to it first.

If you found the opening, paste it. It tells me which team you mean.

A Drive, Dropbox or personal-site link is fine. Make sure it opens without a request for access, or I cannot read it.

At least a short paragraph. This is what I would be putting my name behind, so specifics beat adjectives.

Comma separated, up to six. Things you would be happy to be tested on.

Add to the Zscaler page

This library is only as good as what people who have been through it are willing to share. Most of these companies have no hiring process documented anywhere, and one account of what the rounds actually were is worth more than anything I can research from the outside.

What are you adding?

This decides how the claim is labelled on the page. Only someone representing the company can produce an “official” label, and I check that separately.

Year and month.

Comma separated topics, not the questions themselves.

Round by round is ideal: what each one was, how long, remote or in person, and what it covered.

Credit

Anonymous is the default. If you keep it anonymous, nothing identifying you reaches the page: it is published as a candidate account and your name stays with me. Never send anything covered by an NDA, and never send a take-home or a question paper.

Work with me

Stuck on something specific?

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