Sr. Software Development Engineer-C/C++

Zscaler•San Jose, CA

13h•Hybrid

About The Position

Zscaler is a pioneer and global leader in zero trust security. The world’s largest businesses, critical infrastructure organizations, and government agencies rely on Zscaler to secure users, branches, applications, data & devices, and to accelerate digital transformation initiatives. Distributed across more than 160 data centers globally, the Zscaler Zero Trust Exchange platform combined with advanced AI combats billions of cyber threats and policy violations every day and unlocks productivity gains for modern enterprises by reducing costs and complexity. Here, impact in your role matters more than title and trust is built on results. 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 champion an “AI Forward, People First” philosophy to help us accelerate and innovate, empowering our people to embrace their potential. If you’re driven by purpose, thrive on solving complex challenges and want to make a positive difference on a global scale, we invite you to bring your talents to Zscaler to help shape the future of cybersecurity. We are looking for a Sr. Software Development Engineer, Nanolog to join our team. This is a Hybrid (San Jose, 3 days in office) role, reporting to the Sr. Director, Software Engineering in the Zero Trust Exchange department. You will play a critical role in the evolution of the Zscaler Nanolog Service, driving the design and optimization of our proprietary time series database. By identifying system bottlenecks and implementing kernel-level enhancements, you will ensure our platform continues to deliver high-performance, scalable security solutions for our global customer base.

Requirements

3+ years of experience on Unix/Linux platforms, with strong proficiency in C/C++, Python or Java
Deep expertise in Unix/Linux Operating System internals and command-line utilities to build, debug, and optimize high-performance services
Solid understanding of distributed systems and experience building scalable systems
Deep proficiency in advanced data structures and algorithms

Nice To Haves

Hands-on experience with Ansible for automation
Familiarity with cloud platforms (AWS, GCP, or Azure) and virtualization technologies like Nutanix or KVM

Responsibilities

Design, develop, and test enhancements to the Zscaler Nanolog Service powered by the proprietary timeseries database
Profile and analyze system performance, identify bottlenecks, and deliver code improvements in areas such as memory management, file I/O, and data structures
Stay updated on emerging database technologies and trends to evaluate new concepts for our database kernel
Work closely with cross-functional teams, including product managers and other engineering leads, to define and prioritize technical requirements
Troubleshoot and debug complex database issues reported by internal teams or customers