55 Zscaler Performance Engineer Jobs Hiring Near You

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, 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.
What you'll do (Role Expectations)

• 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

Who You Are (Success Profile)

• 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, operating with integrity because you genuinely care about the outcome.
• You seek out challenges because you are energized by finding solutions, knowing that solving the hard problems delivers the biggest impact.
• You are customer-obsessed, championing their needs from start to finish because their success is our success.
• You are driven by innovation, believing in the power of technology to accelerate transformation and always looking for a better, more secure, and scalable way.

What We're Looking for (Minimum Qualifications)

• 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
• Expertise in distributed systems and experience building scalable systems
• Deep proficiency in advanced data structures and algorithms

What Will Make You Stand Out (Preferred Qualifications)

• Experience with Infrastructure as Code
• Experience with programming languages like Go, Java
• Experience with multiple cloud providers (AWS, Azure) and both relational and non-relational databases for microservices

#LI-Hybrid #LI-YC2
Zscaler's salary ranges are benchmarked and are determined by role and level. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training.
The base salary range listed for this full-time position excludes commission/ bonus/ equity (if applicable) + benefits.
Base Pay Range
$129,500-$185,000 USD
At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.
Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

• Various health plans
• Time off plans for vacation and sick time
• Parental leave options
• Retirement options
• Education reimbursement
• In-office perks, and more!

Learn more about Zscaler's Future of Work strategy, hybrid working model, and benefits here.
By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines.
Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.
Pay Transparency
Zscaler complies with all applicable federal, state, and local pay transparency rules.
Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.