Sr. Software Development Engineer-C/C++

Zscaler•San Jose, CA

3d•$112,000 - $160,000•Hybrid

About The Position

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 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