Zscaler
Zscaler

55 Zscaler Performance Engineer Jobs Hiring Near You

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile ... Debug production issues and provide expert support to ensure system stability and performance Who ...

Staff Site Reliability Engineer

San Jose, CA · On-site

$119K - $170K/yr

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile ... performance and network analysis, and creating reusable tools * Develop automation solutions and ...

Sr. Software Development Engineer-C/C++

San Jose, CA · Hybrid

$63.75 - $84.50/hr

You will play a critical role in the evolution of the Zscaler Nanolog Service, driving the design ... Profile and analyze system performance, identify bottlenecks, and deliver code improvements in ...

Staff macOS/iOS Developer - Networking

San Jose, CA · On-site

$60.75 - $83.50/hr

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile ... Develop high-performance macOS and iOS applications and frameworks that serve as the gateway to our ...

Principal Software Development Engineer

San Jose, CA · Hybrid

$158.20K - $212.10K/yr

... high-performance applications * Ensuring federal certifications such as FIPS, FedRAMP, Common ... to Zscaler's Zero Trust Security Services Who You Are (Success Profile) * You thrive in ambiguity.

Showing results 21-40

Zscaler Jobs Information

What are the key skills and qualifications needed to thrive as a Performance Engineer, and why are they important?

To thrive as a Performance Engineer, you need strong analytical abilities, a solid understanding of software architecture, and experience with load testing and profiling, often supported by a degree in computer science or a related field. Familiarity with tools such as JMeter, LoadRunner, New Relic, and monitoring systems, as well as scripting languages, is typically required. Excellent problem-solving, attention to detail, and effective communication skills help distinguish top performers in this role. These skills and qualities are crucial for identifying system bottlenecks, optimizing performance, and ensuring a seamless user experience.

What are some common challenges Performance Engineers face when optimizing complex systems?

Performance Engineers often encounter challenges such as identifying bottlenecks in multi-tiered or distributed systems, balancing trade-offs between speed and resource consumption, and ensuring that performance improvements do not compromise system reliability. They frequently work with cross-functional teams, requiring strong communication skills to translate technical findings into actionable recommendations. Staying up-to-date with evolving tools and best practices is also essential, as technology stacks and performance benchmarks continually change.

What is a Performance Engineer?

A Performance Engineer is a professional who ensures that software applications and systems run efficiently and meet performance requirements. They analyze, test, and optimize system performance by identifying bottlenecks, conducting load and stress testing, and recommending improvements. Performance Engineers work closely with development and operations teams to ensure that applications can handle expected user loads and deliver a smooth user experience. Their work is crucial in preventing slowdowns, crashes, and other performance-related issues in production environments.

What is the difference between Performance Engineer vs Software Test Engineer?

AspectPerformance EngineerSoftware Test Engineer
Primary FocusOptimizing system performance, load testing, scalabilityFunctional testing, bug identification, feature validation
Required SkillsPerformance testing tools, scripting, system analysisTest case design, automation, defect tracking
Work EnvironmentDevelopment teams, QA, DevOpsQA teams, development teams
CertificationsPerformance testing certifications (e.g., JMeter, LoadRunner)ISTQB, software testing certifications

Performance Engineers focus on system performance, scalability, and load testing, ensuring applications run efficiently under stress. Software Test Engineers primarily verify functionality and identify bugs. While both roles require testing skills, Performance Engineers specialize in performance metrics and optimization, making their roles complementary but distinct.

What is it like to work at Zscaler?

Zscaler is a company that prioritizes innovation, collaboration, and customer satisfaction, fostering a dynamic and fast-paced work environment. The company's structure is organized into agile teams that work closely together to develop and deliver cloud-based security solutions, with a focus on innovation and customer success. Working at Zscaler may appeal to candidates who are passionate about cybersecurity, enjoy working in a collaborative and dynamic environment, and are motivated by the opportunity to make a significant impact in the rapidly evolving field of cloud security.
What are the most popular categories at Zscaler?
Infographic showing various Performance Engineer job openings at Zscaler in the United States as of May 2026, with employment types broken down into 7% Internship, and 93% Full Time. Highlights an 61% Physical, and 39% Remote job distribution.
Staff Software Development Engineer-UI

Staff Software Development Engineer-UI

Zscaler

San Jose, CA • On-site

$129.50K - $185K/yr

Full-time

Medical, Life, Retirement, PTO

Posted 5 days ago


Job description

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 Engineer-UI to join our team. This is a hybrid role based in the San Jose, CA office 3 days a week, reporting to the Sr. Director Software Engineering within the Zero Trust Branch Engineering department. As a Staff Software Engineer, you will lead the charge in developing sophisticated user interfaces that define the next generation of security services. You will be responsible for driving technical excellence and delivering seamless, scalable experiences that empower our customers within the Zero Trust ecosystem.
What you'll do (Role Expectations)
  • Build complex, high-quality UI features using modern frameworks such as React or Angular and associated tools
  • Partner with API, UX, and Product teams to translate product requirements into scalable, high-quality implementations
  • Take end-to-end ownership of product features and ensure quality by defining, implementing, and maintaining unit, integration, and E2E tests
  • Debug production issues and provide expert support to ensure system stability and performance

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. You adapt to what's needed, navigating seamlessly between high-level strategy and hands-on execution.
  • You are a high-trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback-knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust.
  • You are customer-obsessed. You build deep empathy for the customer-both internal and external-and anchor your decisions in solving their real-world problems. You champion their needs from start to finish, knowing their success is our success.
  • You operate with urgency. You understand that in a high-growth environment, speed and quality are not mutually exclusive. You have a relentless focus on execution and a bias for action, delivering high-impact results quickly to win for the customer and the team.

What We're Looking for (Minimum Qualifications)
  • Extensive professional experience in front-end (UI) development
  • A Bachelor's degree with 7+ years of relevant experience, or a Master's degree with 5+ years of relevant experience
  • Deep proficiency in React or Angular development utilizing TypeScript

What Will Make You Stand Out (Preferred Qualifications)
  • Proven experience building and scaling UI for Enterprise-grade products
  • Direct experience developing UIs for Networking or Security Services products

#LI-Hybrid
#LI-CM3
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.