Principal UI Engineer, Platform (Cortex)

Palo Alto Networks, Inc.; Santa Clara (CA); On-site; USD 156,000 - 253,000; Full time

Job summary

Palo Alto Networks is seeking a Principal UI Engineer for the Cortex Platform to lead frontend architecture, drive scalable UI design, and deliver data-rich visualizations. Collaborate with UX, backend, and product teams to translate complex workflows into intuitive interfaces.

You’ll mentor engineers and shape performance, accessibility, and design-system standards across products, contributing to a secure, scalable security platform.

Qualifications

• 10+ years of software engineering experience, with 6+ years in frontend web-scale apps.
• Mastery of JavaScript (ESNext), TypeScript, React, Angular, HTML5, Tailwind/CSS3/Sass.
• Deep understanding of state management (RxJS, Redux Toolkit, Zustand, React Query) and modern frontend patterns (Micro-Frontends, Webpack Module Federation).

Responsibilities

• Architect frontend strategy for Cortex Platform products, building modular, performant micro-frontend structures.
• Lead data visualization and complex UI components for high-volume, multi-source data.
• Maintain enterprise design systems and ensure WCAG accessibility across products.
• Optimize bundle sizes, rendering paths, state management, and asset loading for fast responses.

Skills

Frontend architecture

Web-scale frontend

JavaScript ESNext

TypeScript

React

Angular

HTML5

Tailwind/CSS3/Sass

RxJS

Redux Toolkit

Zustand

React Query

Data visualization

CI/CD tooling

Vite/Webpack

Jest/RTL/Cypress

Education

Bachelor’s or Master’s degree in Computer Science or related field

Tools

Storybook

Vite

Webpack

Jest

Cypress/Playwright

Job description

Our Mission

At Palo Alto Networks®, we’re united by a shared mission—to protect our digital way of life. We thrive at the intersection of innovation and impact, solving real-world problems with cutting-edge technology and bold thinking. Here, everyone has a voice, and every idea counts. If you’re ready to do the most meaningful work of your career alongside people who are just as passionate as you are, you’re in the right place.

Who We Are

In order to be the cybersecurity partner of choice, we must trailblaze the path and shape the future of our industry. This is something our employees work at each day and is defined by our values: Disruption, Collaboration, Execution, Integrity, and Inclusion. We weave AI into the fabric of everything we do and use it to augment the impact every individual can have. If you are passionate about solving real-world problems and ideating beside the best and the brightest, we invite you to join us!

We believe collaboration thrives in person. That’s why most of our teams work from the office full time, with flexibility when it’s needed. This model supports real-time problem-solving, stronger relationships, and the kind of precision that drives great outcomes.

About Palo Alto Networks & Cortex

Palo Alto Networks is the global cybersecurity leader. The Cortex platform delivers AI-driven enterprise security operations—including Cortex XDR, XSOAR, XSIAM, and Xpanse to protect thousands of organizations against complex cyber threats.

Role Overview

As a Principal UI Engineer on the Cortex Platform team, you will play a key leadership role in advancing our frontend ecosystem. Working alongside architecture leadership, you will help execute the platform's technical vision, driving scalable UI architecture, design system integrations, robust data visualization, and performance optimization. Collaborating closely with UX designers, backend engineers, and product managers, you will shape how security analysts monitor, analyze, and automate threat responses.

Key Responsibilities

• Architecture & Scalability: Partner with architecture leadership to execute the frontend technical strategy for Cortex Platform products, building modular, performant, and resilient micro-frontend structures.
• Data & Workflow Visualization: Lead the development of intuitive data visualizations and complex UI components that present high-volume, multi-source data clearly to end users.
• Design System & Component Library: Partner with UX teams to evolve and maintain enterprise-grade design systems, ensuring UI component consistency and accessibility (WCAG) across products.
• Performance Optimization: Optimize bundle sizes, rendering paths, state management, and asset loading for ultra-fast response times under heavy client-side data loads.
• Cross-Functional Leadership: Partner with backend engineers, AI/ML teams, and product leaders to translate complex security workflows into intuitive platform interfaces.
• Mentorship & Quality Standards: Establish frontend best practices, automated UI testing pipelines (E2E/Unit), and code review standards while mentoring mid-level and senior UI engineers.

Qualifications

Required Qualifications

• Experience: 10+ years of software engineering experience, with 6+ years focused on building complex, web-scale frontend applications.
• Core Technologies: Mastery of JavaScript (ESNext), TypeScript, React, Angular, HTML5, Tailwind/CSS3/Sass.
• State & Architecture: Deep understanding of state management (RxJS, Redux Toolkit, Zustand, React Query) and modern frontend application patterns (Micro-Frontends, Webpack Module Federation).
• Data Visualization: Hands‑on experience building complex data visualizations and rich UI dashboards.
• Tooling & CI/CD: Experience with modern build tools (Vite, Webpack, Babel), CI/CD workflows, and testing frameworks (Jest, React Testing Library, Cypress/Playwright).
• Education: Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or equivalent practical experience.

Preferred Qualifications

• Experience building shared platform capabilities or core UI frameworks in cybersecurity, SIEM, or SOC operations domains.
• Experience maintaining enterprise design systems and UI component libraries (e.g., Storybook).
• Understanding of WebSockets, Server‑Sent Events (SSE), and real-time frontend streaming architecture.
• Exposure to AI/LLM integrations within web interfaces (e.g., streaming chat responses, autonomous agent workflows).

Compensation Disclosure

The compensation offered for this position will depend on qualifications, experience, and work location. For candidates who receive an offer at the posted level, the starting base salary (for non-sales roles) or base salary + commission target (for sales/com-missioned roles) is expected to be the annual range listed below. The offered compensation may also include restricted stock units and a bonus. A description of our employee benefits may be found here.

$156,400.00 - $253,000.00/yr

Our Commitment

We’re trailblazers that dream big, take risks, and challenge cybersecurity’s status quo. It’s simple: we can’t accomplish our mission without diverse teams innovating, together.

We are committed to providing reasonable accommodations for all qualified individuals with a disability. If you require assistance or accommodation due to a disability or special need, please contact us at [e-mail].

Palo Alto Networks is an equal opportunity employer. We celebrate diversity in our workplace, and all qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or other legally protected characteristics.

All your information will be kept confidential according to EEO guidelines.

Is role eligible for Immigration Sponsorship?: Yes