Browser and Extension QA Engineer

Role overview A remote quality assurance role dedicated to testing custom browsers and browser extensions across multiple engines and storefronts. The position sits on a Testing and Security team at a specialist browser engineering firm, with the mission of catching regressions and functional defects before they reach end users. It is a mid-level opportunity suited to someone who enjoys automated testing as much as hands-on validation.

Responsibilities

- Design and execute test plans for custom Chromium and Firefox based browsers and their extensions. - Build and maintain automated test suites using Playwright and the Chrome DevTools Protocol. - Validate extension behavior across Manifest V3 environments on Chrome, Firefox, Edge, Brave, and Safari. - Write and maintain test scripts and tooling in TypeScript. - Log reproducible bug reports and coordinate with browser and extension developers to drive fixes.

Requirements

- Practical experience with Playwright or comparable browser automation frameworks. - Familiarity with the Chrome DevTools Protocol for inspecting and driving browsers programmatically. - Working knowledge of TypeScript for writing tests and tooling. - Understanding of browser extension architecture, including Manifest V3. - Mid-level experience in software QA or test engineering.

Benefits and work setup

- Fully remote role within the Testing and Security team. - Pay, contract type, and working hours are discussed with candidates before any offer is made. - Applications are reviewed individually by the hiring team.