About Zscaler
Zscaler accelerates digital transformation so our customers can be more agile, efficient, resilient, and secure. Our cloud native Zero Trust Exchange platform protects thousands of 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 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 make a positive difference on a global scale, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.
Our Engineering team built the world's largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy.
We are looking for a Principal Software Development Engineer to join our Frontend Engineering team and lead the design, development, and evolution of world-class web applications. Reporting to the Manager, Software Development Engineering, you will play a pivotal role in shaping Zscaler’s next-generation user interfaces while mentoring and guiding other engineers.
- Architecting and delivering high-quality ReactJS solutions, specializing in translating UI/UX designs into robust applications. Includes technical mentorship and fostering innovation
- Driving system design and engineering excellence by evolving Zscaler’s design system and championing best practices, including automated testing, modularity, semantic code, and performance tuning
- Defining API contracts and integration roadmaps with backend teams. Optimizing CI/CD with DevOps and evaluating new technologies to foster innovation
- Leading system refactoring to ensure scalability, reliability, and maintainability. Drives engineering excellence through focus on accessibility and research-driven methods
- 8+ years software development, 5+ years specializing in large-scale production ReactJS and Redux applications
- Expert in ReactJS development using TypeScript, ES6+, and advanced state management
- Experience building complex UIs, data-heavy dashboards, and advanced data visualizations (e.g., D3.js)
- Expertise in developing extensive unit, integration, and E2E tests (Jest, Enzyme, or Cypress)
- Expertise in designing and deploying large-scale enterprise UIs, emphasizing high availability, performance, and a seamless experience for global users
- Drove performance optimization (speed, responsiveness) using advanced techniques (lazy loading, code splitting, tree shaking) to enhance application scalability
- Familiarity with backend principles and practical experience with Node.js or similar for API integration/debugging
- Ability to architect and implement scalable and modular solutions for multi-tenant applications, with a focus on reliability, maintainability, and future-proofing system development
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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.
Top Skills
What We Do
Serving thousands of enterprise customers around the world including 45% 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.
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