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 Staff Software Development Engineer to join our team. This is a hybrid role based in Bangalore, reporting to the Senior Manager in the Engineering department. You’ll collaborate with a diverse team of engineers to design, build, and deliver an innovative zero-trust cybersecurity product as part of the world’s largest cloud security platform. You will bring your vision and passion to our team of experts who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. What you’ll do (Role Expectations) Collaborate with a diverse team of engineers to design, build, and deliver an innovative zero-trust cybersecurity product Write production-quality code in C and C++ for Linux-based systems Diagnose, troubleshoot, and resolve issues in complex distributed systems Who You Are (Success Profile) You thrive in ambiguity, comfortably building the path forward in a dynamic environment and viewing complex challenges as raw material to construct meaningful solutions. You act like an owner with a fierce passion for the mission, a strong bias for action, and the dynamic range to navigate seamlessly between high-level strategy and hands-on execution. You are a natural problem-solver who runs toward challenges, remaining laser-focused on finding innovative solutions to the hardest problems to deliver maximum impact. You are a high-trust collaborator who is ambitious for the team's success, actively embracing a culture of candor, clarity, and mutual respect to build deep alignment. You are a lifelong learner with a true growth mindset, consistently seeking feedback to develop yourself, elevate your teammates, and execute your work with deep purpose. What We’re Looking for (Minimum Qualifications) Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain 6+ years of software development experience with fluency in C and C++ Demonstrated expertise in Linux/Unix kernel development Strong understanding of networking concepts, including TCP/IP RFCs, and the Linux kernel networking stack Experience in containerization technologies such as Kubernetes and Linux namespaces Hands-on experience with unit testing and mocking frameworks like Google Test or JUnit What Will Make You Stand Out (Preferred Qualifications) Knowledge of Windows Installer packaging and tools such as WiX Experience writing Windows Filtering Platform (WFP) Knowledge of Linux distributions and package formats #…