Senior Software Engineer – Chrome Extensions (Manifest V3)

Location:
Pune, India (Hybrid – 2 days onsite)

Experience:
8–15 years

Employment type:
Full time

About the Role

We are hiring on behalf of a global leader in K-12 student-safety technology, whose platform protects millions of students across thousands of schools worldwide. You will own the architecture and implementation of the client's onboard filtering engine — building a local policy cache and real-time filtering decision engine inside a Chrome extension that moves filtering decisions on-device, improving speed, reliability, and bypass resistance at massive scale.

This is a Staff-level (L5) position. You will be the technical owner of the initiative — driving direction from architecture to production, resolving ambiguity without waiting for a fully-formed spec, and mentoring mid-level engineers. You are expected to track platform shifts (such as Google's Filter & Monitor / ChromeOS Content Filtering API direction) and surface architectural recommendations, not just implement a handed-down plan.





What You'll Do

Own the architecture of the onboard filtering engine — local policy cache, delta sync protocol, filtering decision engine, and bypass-prevention layer — not just their implementation. Architect and implement the local policy cache with delta sync, TTL management, cache invalidation, and graceful cloud fallback. Build the filtering decision engine in the MV3 service worker (domain matching, URL categorization, iframe detection, allow/block decisions). Implement and harden bypass prevention across same-origin policy, CSP, CORS, iframe sandboxing, and content-script/page-context boundaries, treating adversarial users as a primary design constraint. Manage chrome.storage.local within platform limits, evaluate IndexedDB for larger policy stores, and document tradeoffs in architecture decision records. Optimize extension performance to add negligible latency on low-end Chromebook hardware, and ment

📌 Senior Software Engineer – Chrome Extensions (Pune)
🏢 V3 Staffing
📍 Pune