Sr. Staff Software Development Engineer

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 Senior Staff Software Engineer to join our ZCC Team. This is a hybrid role based in Mohali/Bangalore Location, reporting to the Senior Engineering Manager within the Engineering department. As a Senior Staff Software Engineer, you will be a key player in the entire product development lifecycle, designing and maintaining high-quality server-side software. Your deep knowledge of C programming and low-level system architecture will be crucial for creating efficient, reliable, and scalable solutions that enable organizations worldwide to harness speed and agility.

What you’ll do (Role Expectations)

Designing, developing, coding, testing, and debugging complex software in C language

Architecting and implementing software for resource-constrained environments including optimized memory and CPU usage

Developing networking applications on Operating Systems like Linux or FreeBSD to ensure deterministic and reliable performance

Mentoring junior engineers, conducting code reviews, and championing best practices in software engineering

Creating and maintaining comprehensive technical documentation for software designs and APIs

Who You Are (Success Profile)

You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful.

You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ow