HireHire › Zscaler jobs › Principal Software Development Engineer

Principal Software Development Engineer

Apply for this role or explore on the map →

About Zscaler

Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location.

Here, impact in your role matters more than title and trust is built on results. We say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership, and accountability.

We value high-impact, high-accountability with a sense of urgency where you’re enabled to do your best work and embrace your potential. If you’re driven by purpose, thrive on solving complex challenges, and want to be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.

Role

We are looking for a Principal Software Development Engineer to join our team. This is a hybrid role based in San Jose, CA role, reporting to the Senior Director, Software Engineering in the Engineering department. You will join the team that built the world’s largest cloud security platform from the ground up, enabling organizations worldwide to harness speed and agility with a cloud-first strategy. With more than 100 patents and 15 million users across 185 countries, you will bring your vision to a team of experts dedicated to enhancing our multitenant architecture and global footprint.

What you’ll do (Role Expectations)

  • Designing, developing, and optimizing the system, including networking and security features, to support high-performance applications

  • Ensuring federal certifications such as FIPS, FedRAMP, Common Criteria, and SOC2 compliance

  • Creating design and functional specification documents while performing unit testing and automation to ensure quality

  • Collaborating with cross-functional teams to identify and resolve system-related issues, optimize system performance, and innovate features

  • Applying strong software design principles and deep troubleshooting expertise to deliver scalable, resilient, and impactful improvements to Zscaler’s Zero Trust Security Services