Staff Browser Extension Engineer

About the role

ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback.

What you'll do

• This is a Hybrid (Bangalore) role, reporting to the Director, Threat Researcher in the Engineering department
• Zero Trust Browser is our Browser Detection and Response (BDR) extension that lives inside Chrome, Firefox
• This is not a typical frontend role; most of the work happens beneath the UI layer in code that runs on every page a user visits across browsers we do not control and…
• The core engineering challenges center on the browser itself: how pages load, how extension contexts communicate, how to stay fast and invisible
• Join a small, senior team as a hands-on individual contributor, owning features end to end and shaping how a large, modular codebase grows

What you need

• JavaScript
• TypeScript
• Machine learning
• Vue.js
• Instrumentation
• React

Good to have

• Playwright