Senior Platform PM — Browser Foundations (Remote UK)

Mozilla; Greater London; On-site; GBP 111,000 - 148,000; Full time

Benefits offered by this job

Generous performance-based bonus plans

Medical, dental, and vision coverage

Generous retirement contributions with

100% immediate vesting

Job summary

Mozilla is seeking a product-minded engineer to own the foundation layer that powers Firefox integrations and external tools. You will shape a broad, greenfield space with both strategic and hands-on execution, guiding internal teams and external AI tools through a single shared platform.

You’ll drive security, safety, and trust in the system, define how third-party AI assistants are used, and help Mozilla build browser-powered products for developers and users alike.

Qualifications

• A product-minded engineer or a very technical PM who can drive a technical product.
• Experience in developer-space thinking, with the range to balance consumers and internal platforms.
• Comfortable setting strategy in ambiguity; own a technical contract other teams depend on.
• Strong instincts on security and trust; nice to have: web standards, MCP, browser automation.

Responsibilities

• Own the shared foundation and the building blocks it gives other software, and make them reliable and secure.
• Push the open standard (WebDriver BiDi) forward, and build Firefox-only advantages the standard won’t cover
• Design the safety controls: let a person approve actions, see when software is acting for them, and take back control.
• Define the strategy for any major third‑party AI assistants people already use.
• Serve internal teams (Smart Window, New Products) and outside tools through one shared layer.

Skills

Product-minded engineer

Technical PM

Developer-space experience

Security and trust instincts

Tools

WebDriver BiDi

Browser automation

Job description

Mozilla is seeking a product-minded engineer to own the foundation layer that powers Firefox integrations and external tools. You will shape a broad, greenfield space with both strategic and hands-on execution, guiding internal teams and external AI tools through a single shared platform.

You’ll drive security, safety, and trust in the system, define how third-party AI assistants are used, and help Mozilla build browser-powered products for developers and users alike.