Your browser does not support javascript! Please enable it, otherwise web will not work for you.

Senior Staff Software Development Engineer

Home > Python programming jobs

Senior Staff Software Development Engineer in USA

  • Zscaler
  • Full time
  • Email
  • San Jose, CA

Responsibilities

  • Architect, design, develop, and maintain scalable system test automation infrastructure for the ZIA Core Datapath cloud product.
  • Build repeatable automation suites for L4–L7 technologies, including cloud firewalls, IPsec/GRE tunneling, load balancers, IPS/IDS, and routing and switching.
  • Perform functional, integration, performance, and scale testing, including test plan and test case creation.
  • Debug and troubleshoot complex network infrastructure, HTTP/SSL, and firewall issues in customer environments.
  • Own features, advocate for testing at scale, optimize regression cycles, and mentor junior engineers.
  • Collaborate with cross-functional teams on cloud-based software design, development, and maintenance.

Requirements

  • 12+ years of overall experience and strong Python programming skills for building test automation frameworks.
  • Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions within the functional domain.
  • Strong knowledge of TCP/IP, HTTP(S), TLS, PKI, DNS, DHCP, VPN, HA, routing and switching, and IPsec/GRE tunneling.
  • Hands-on experience with L3, L4, and L7 filtering policies, load balancers, IPS/IDS, and routers.
  • Proven experience with manual and automated functional, integration, performance, and scale testing for cloud security or SaaS products.
  • Excellent debugging and troubleshooting skills for network infrastructure, HTTP/SSL, and firewall issues.
  • Preferred experience with AI-assisted coding, static or dynamic analysis, intelligent automation tools, traffic generators, performance/load testing tools, and fuzzing techniques.
  • Preferred track record of mentoring junior engineers and leading large-scale test automation or quality initiatives for distributed cloud systems.

Benefits

  • Hybrid work arrangement with three days per week in the San Jose, California office.
  • Various health plans, vacation and sick time-off plans, parental leave options, retirement options, education reimbursement, and in-office perks.
  • Inclusive workplace and support for reasonable accommodations during the recruiting process.

Salary: $158k - $225k/yr

Zscaler

Zscaler is a leader in zero trust security, providing a cloud-native platform that enables organizations to secure users, applications, and data while driving digital transformation. Our Zero Trust Exchange platform leverages advanced AI and the largest security data lake to combat cyber threats,...

Similar positions

Software Engineer in Test

  • Roadie
  • Full time
  • USA
  • 09/13/2026
  • Salary: Competitive
  • Remote

Principal Software Engineer - Builder Experience

  • Elastic
  • Full time
  • Remote
  • 09/13/2026
  • Salary: €73k-€116k
  • Greece

Principal Software Engineer - Builder Experience

  • Elastic
  • Full time
  • Remote
  • 09/13/2026
  • Salary: zł 369k-zł 584k
  • Poland

Senior Devops Engineer

  • Woliba
  • Full time
  • USA
  • 09/13/2026
  • Remote

Senior Core Infrastructure Engineer

  • Oracle
  • Full time
  • USA
  • 09/13/2026
  • Salary: Competitive
  • Nashville, TN