.jpg?1700169058){kind=logo}
About the company
Zscaler (NASDAQ: ZS) accelerates digital transformation so that customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange is the company’s cloud-native platform that protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. With more than 10 years of experience developing, operating, and scaling the cloud, Zscaler serves thousands of enterprise customers around the world, including 450 of the Forbes Global 2000 organizations. In addition to protecting customers from damaging threats, such as ransomware and data exfiltration, it helps them slash costs, reduce complexity, and improve the user experience by eliminating stacks of latency-creating gateway appliances. Zscaler was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. Zscaler’s purpose-built security platform puts a company’s defenses and controls where the connections occur—the internet—so that every connection is fast and secure, no matter how or where users connect or where their applications and workloads reside.
Job Summary
We're looking for an experienced Principal Software Development Engineer to join our ZIA team.You will drive technical strategy, set engineering standards, mentor other engineers, and collaborate with Operations and Support to ensure a healthy cloud and exceptional customer outcomes. You’ll demonstrate ownership, accountability, and a bias for precision in execution. This is a hybrid role, going into the San Jose, CA office 3 days a week. Reporting to the Sr Architect, Senior Development you'll be responsible for:
📍Designing, implementing, and optimizing high‑performance network applications and protocols using C and Python 📍Architecting and scaling distributed systems across multiple data centers with stringent performance, resiliency, and multi-tenant requirements 📍Working within Linux environments to perform system programming, scripting, and troubleshooting 📍Contributing to and guiding key domains including post‑quantum cryptography, Network Detection & Response (NDR), Zscaler Digital Experience (ZDX), and Zscaler OS 📍Collaborating with teams to define requirements, design architectures, and ensure reliable software through testing and debugging
What We're Looking for (Minimum Qualifications)
📍10+ years of hands‑on C programming experience on Unix/FreeBSD/Linux in distributed, enterprise‑scale environments 📍Proven expertise in high availability design, failover redundancy, load balancing, and performance optimization, with strong familiarity in SLOs, observability, and capacity planning for 24×7 services 📍Deep understanding of networking protocols and services: DNS, HTTP/2, QUIC, TCP/IP, and SSL/TLS 📍Experience with security technologies (firewall, IPS, authentication) and networking technologies (VPN/IPSec, data‑plane traffic forwarding). 📍Proficiency in troubleshooting network issues using tools such as Wireshark, tcpdump, curl, and wget
If this role isn’t the perfect fit, there are plenty of exciting opportunities in blockchain technology, cryptocurrency startups, and remote crypto jobs to explore. Check them on our Jobs Board.
