Sr. Staff Software Engineer - UI, React.js

About ZscalerZscaler 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.RoleWe are looking for a Staff Software Development Engineer (UI/React.js) to join our team. This is a San Jose, CA (Hybrid) role, reporting to the Director, Engineering in the Unified Experiences Platform department. As a key member of this team, you will be responsible for crafting high-quality libraries and tools while building high-performance, resilient UI that scales. You will serve as a technical leader, driving engineering excellence and ensuring our frontend architecture meets the highest standards of performance and maintainability.What you’ll do (Role Expectations)Craft high-quality libraries and tools for building frontend applicationsDevelop and maintain high-performance resilient UI using ReactJS, TypeScript, and TailwindDocument and communicate technical specifications to ensure alignment with stakeholdersIdentify and resolve technical challenges by incorporating a robust test automation strategyParticipate in code reviews and enforce coding standards to ensure a maintainable codebaseWho 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. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands-on execution.You are a problem-solver. You love running towards the challenges because you are laser-focused on finding the solution, knowing that solving the hard problems delivers the biggest impact.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 a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose.What We’re Looking for (Minimum Qualifications)Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain5+ years of experience in JavaScript development with a focus on building and deploying ReactJS applicationsExpertise in creating lean, clear documentation, testing, and automation as integral components of the UI workflowExceptional problem-solving skills with a proven ability to develop creative solutions and convey complex technical concepts to both technical and non-technical stakeholdersDemonstrated track record of fostering engineering excellence and driving innovationWhat Will Make You Stand Out (Preferred Qualifications)Experience building web interfaces for generative AI applications, including optimizing UI components for real-time streaming LLM responses and designing intuitive component workflows for AI featuresDemonstrated expertise in front-end performance optimization and resolving rendering bottlenecks within data-intensive interfaces to ensure fluid user experiencesSkilled in designing scalable, reusable front-end architectures that prioritize efficient component composition#LI-Hybrid #LI-JG1Zscaler’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$154,000—$220,000 USDAt 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 plansTime off plans for vacation and sick timeParental leave optionsRetirement optionsEducation reimbursementIn-office perks, and more!Learn more about Zscaler's 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 TransparencyZscaler 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.