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Sr. Staff Software Development Engineer

Zscaler

$154,000 - $220,000
Nov 10, 2025
San Jose, CA, USA
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Zscaler is looking to hire an experienced Sr. Staff Engineer to join their ZPA team to work on cutting-edge Zero Trust technologies, developing and delivering solutions that ensure fast, reliable, and secure access to business-critical apps. The role involves designing and developing new architectures as well as extending and optimizing existing throughput-critical forwarding systems and pipelines that guarantee high-speed transit with imperceptible latency.

Requirements

  • 6+ years of experience in C/C++ programming in a distributed and enterprise-scale environment
  • Experience with networking protocols and traffic management technologies (e.g., TCP/IP, HTTP/HTTPS, SSL/TLS, QUIC)
  • Experience diagnosing and resolving network performance issues (latency/packet loss), including analysis using traffic tools
  • Strong knowledge in one or more of the cloud platforms such as AWS, Azure, or GCP
  • Familiarity with Kubernetes components and containerization technologies such as Docker or Podman
  • Working experience in Rust programming language
  • Familiarity with Hashicorp Packer for building and customizing VM images for cloud for AWS, Azure, GCP, or VMware ESX

Responsibilities

  • Working on cutting-edge Zero Trust technologies, developing and delivering solutions that ensure fast, reliable, and secure access to business-critical apps
  • Designing and developing new architectures as well as extending and optimizing existing throughput-critical forwarding systems and pipelines that guarantee high-speed transit with imperceptible latency
  • Collaborating across teams (product, operations, etc.) to design, implement, deploy, and monitor systems in production and at scale
  • Proactively identifying and resolving hotspots to ensure smooth performance as the user base grows and identifying paths towards operational improvements and excellence

Other

  • This role is hybrid and based in our San Jose, CA office three days a week.
  • Reporting to the Manager, Software Engineering
  • Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry.
  • If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler.
  • We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging.