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 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. 

As a Frontend Developer, you will be responsible for translating UI/UX designs and wireframes into high-quality code. Your primary focus will be on developing user interfaces and ensuring the responsiveness and performance of web applications.


  • Translate UI/UX designs and wireframes into high-quality code.
  • Develop user interfaces for web applications.
  • Ensure the responsiveness and performance of applications.
  • Collaborate with back-end developers and designers to improve usability.
  • Optimize applications for maximum speed and scalability.
  • Implement and maintain front-end security best practices, including XSS and CSRF prevention.
  • Debug and troubleshoot issues to optimize the UI/UX.
  • Stay up-to-date with emerging technologies and industry trends.


  • 5+ years of front-end development experience.
  • Excellent understanding of HTML, CSS, and JavaScript.
  • Proficiency in native JavaScript as well as one or more frameworks such as ReactJS, AngularJS.
  • Strong understanding of the browser DOM.
  • Proficiency with debugging and testing tools (e.g., Chrome DevTools, Jest, Enzyme) to troubleshoot and optimize the UI.
  • Basic understanding of front-end security best practices and vulnerabilities (e.g., XSS, CSRF).
  • Basic understanding of CSS pre-processing platforms, such as LESS and SASS.

Good to Know:

  • Experience with Node.js and AWS server technologies.
  • Familiarity with version control systems (e.g., Git).
  • Experience with responsive design techniques.
  • Knowledge of RESTful APIs and asynchronous request handling.
  • Familiarity with build tools such as Webpack.
  • Experience with agile development methodologies.
  • Strong problem-solving skills and attention to detail.
  • Excellent communication and teamwork skills.

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 proud to be an equal opportunity and affirmative action employer. We celebrate diversity and are committed to creating an inclusive environment for all of our employees. All qualified applicants will receive consideration 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 characteristics 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. For additional information about the federal requirements, click here.

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.

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