# Senior Staff Software Engineer – Test Automation Infrastructure (ZIA Core)

**Company**: Zscaler
**Location**: Santa Clara, California
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Salary**: $157,500-$225,000 USD
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/zscaler/jobs/5227024007?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_86a73de0-2bd

## Description

Zscaler is seeking a Senior Staff Software Engineer – Test Automation Infrastructure (ZIA Core) to join its team. This hybrid role, located in Santa Clara, California, involves owning the architecture, development, and maintenance of a high-scale system test automation infrastructure for ZIA Core Datapath, a cloud security platform processing over 400 billion transactions daily.

Responsibilities:

- Collaborate with cross-functional teams during design, development, and maintenance of cloud-based software solutions

- Architect, design, develop, and maintain a scalable system test automation infrastructure for a cloud product processing 400B+ transactions per day

- Build repeatable automation suites to validate L4–L7 technologies, including cloud firewall, IPsec/GRE tunneling, load balancers, IPS/IDS, and routing/switching

- Act as an owner and advocate for testing at scale, pushing the limits of the software under test through proficient coding methodologies and strong debugging/troubleshooting

- Mentor and guide junior engineers, take full ownership of features, and continuously optimize the regression cycle

Requirements:

- 12+ years of overall experience with strong programming skills in building test automation frameworks in Python

- Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions

- Solid understanding of the TCP/IP protocol stack, HTTP(S), TLS, PKI, DNS, DHCP, VPN, HA, routing and switching, and tunneling methods such as IPsec/GRE

- Strong background in L3, L4, and L7 filtering policies, with hands-on exposure to load balancers, IPS/IDS, and routers

- Proven experience in manual and automated functional, integration, performance, and scale testing for cloud security/SaaS products

Preferred Qualifications:

- Experience leveraging AI-assisted coding, static/dynamic analysis, or intelligent automation tools to improve test coverage and engineering productivity

- Hands-on experience with traffic generators, performance/load testing tools, and fuzzing techniques

- Track record of mentoring junior engineers and leading large-scale test automation or quality initiatives for distributed cloud systems

The role offers a base salary range of $157,500-$225,000 USD and comprehensive benefits, including various health plans, time off plans, parental leave options, retirement options, education reimbursement, and in-office perks.

## Skills

### Required
- Python
- AI/ML
- TCP/IP protocol stack
- HTTP(S)
- TLS
- PKI
- DNS
- DHCP
- VPN
- HA
- routing and switching
- IPsec/GRE
- L3, L4, and L7 filtering policies
- load balancers
- IPS/IDS
- routers
- cloud security/SaaS products

### Nice to have
- AI-assisted coding
- static/dynamic analysis
- intelligent automation tools
- traffic generators
- performance/load testing tools
- fuzzing techniques
- mentoring junior engineers
- large-scale test automation or quality initiatives

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/zscaler/jobs/5227024007?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)