Principal Software Engineer - UI, React.js

About Zscaler

Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location.

Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. 

At Zscaler, our Customer Success Organization is a global, customer-focused team dedicated to delivering high-impact experiences and identifying innovative solutions. We leverage valuable data and research to provide expert, hands-on support starting from the implementation phase and beyond, ensuring customers achieve their goals and leverage our technology to its fullest potential. Together, we create a customer-centric culture that fosters success, adoption, and continuous growth. 

We're seeking an experienced Principal UI Engineer to join our Engineering Team, reporting to the Director of Engineering.  This is a hybrid role going into our San Jose, CA office 3 days a week. In this role, you will:

• Lead and drive the engineering effort for the development and maintenance of the Zscaler Microsegmentation User Interface
• Work closely with the UI design team to implement intuitive and accessible user interfaces, leveraging UX best practices and a component library
• Collaborate with the product team to define and implement functional requirements that align with business goals
• Develop high-quality, maintainable code with thorough unit and end-to-end (E2E) tests using frameworks such as Jest, Cypress, or Playwright
• Advocate for UI platform priorities, ensuring alignment with long-term architectural goals and business needs

What We're Looking for (Minimum Qualifications):

• 10+ years of professional experience as a front-end engineer, including mentoring junior engineers 
• 8+ years of React.js experience and extensive experience with JavaScript 
• Strong understanding of UI/UX design principles, UI components, scalability, performance and security to maintain a high-quality user experience 
• Experience in designing and implementing efficient and scalable GraphQL and REST APIs that serve the frontend effectively
• Bachelor Degree/or Masters Degree in computer science or equivalent experience

What Will Make You Stand Out (Preferred Qualifications):

• Strong understanding of front-end build tools, package managers, monorepos, version control systems (e.g., Nx, npm, git), and performance optimization techniques
• Experience in component composition, code quality, testing methodologies, containerization (Kubernetes), and cloud-based UI deployments
• Familiarity with AWS services (e.g., CloudFront, EC2, S3) and their application in secure, scalable, and high-availability environments

#LI-Hybrid
#LI-BH1

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$175,000—$250,000 USD

At Zscaler, we believe that diversity drives innovation, productivity, and success. We are looking for individuals from all backgrounds and identities to join our team and contribute to our mission to make doing business seamless and secure. We are guided by these principles as we create a representative and impactful team, and a culture where everyone belongs. For more information on our commitments to Diversity, Equity, Inclusion, and Belonging, visit the Corporate Responsibility page of our website.

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