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Zscaler

Principal Software Engineer (C / Networking / Dataplane)

Zscaler · San Jose, California, USA

Posted 14 days ago

or apply directly on Zscaler's site. We never take the application ourselves.

Is this posting real?

This role has been open
14 days
Zscaler's roles stay open a median of 40 days
Reposted
No
Salary listed
No
0% of Zscaler's roles list one
Ghost-job risk at Zscaler
low
0 stale, 19 reposted of 370 open
Hiring momentum
564 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-09-17

Measured from postings appearing on and disappearing from Zscaler's own greenhouse board since 2026-08-03. Full hiring picture for Zscaler.

About this role

The Principal Software Engineer will design and implement high-performance data path features for load balancing and L7 protocols, enhancing the scalability and security of the global networking infrastructure. This role requires deep expertise in C programming and networking protocols, with responsibilities that include driving complex architectural projects from conception to deployment. The position is hybrid, requiring three days a week in the San Jose office.

Our read on this posting3.0out of 5
benefits
3/5
freshness
4/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Zscaler as an employer.

What you need

  • 12+ years of experience building large-scale commercial networking and security applications
  • Proficiency in programming languages C or C++
  • Strong foundational knowledge in data structures and algorithms
  • Working experience in Linux, Unix, or similar operating systems
  • BS or MS degree in CS/CE or equivalent experience

Nice to have

  • Exposure to AI-assisted software development tools and workflows
  • Advanced knowledge of networking protocols and services, specifically DNS, HTTP, TCP/IP, and SSL/TLS

What you get

  • Various health plans
  • Time off plans for vacation and sick time
  • Parental leave options
  • Retirement options
  • Education reimbursement
  • In-office perks, and more!

Worth weighing

  • Hybrid work model requires in-office presence three days a week
  • No specific mention of team size or structure
  • Salary range provided but excludes commission/bonus/equity

Summarised from Zscaler's posting. Read the full original.

Listed by Zscaler on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.

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