New Products Principal Engineer

Mozilla Foundation

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Job Description

Job Overview

The Mozilla Corporation is seeking a founding Principal Software Engineer for the New Products team, focused on building a browser-automation stack for AI agents. The ideal candidate will set the technical vision, architect the platform, and predominantly write production code while mentoring a small team of engineers. This role is designed for someone who thrives on creating impactful developer tools and enjoys shaping innovative products from the ground up.

Technical Requirements

Required Skills
  • • Go
  • • Ruby
  • • Python
  • • TypeScript
Preferred Skills
  • • AI/ML workflows
  • • browser automation frameworks
Experience Level

10+ years of software engineering experience with at least 3 years in leadership roles.

Responsibilities

  • • Define and communicate the long-term technical roadmap for the browser-automation stack.
  • • Write elegant, high-performance code daily.
  • • Design distributed and fault-tolerant services and developer-facing SDKs/APIs.
  • • Mentor and inspire a world-class engineering team.
  • • Collaborate closely with product, design, and developer-relations teams.
  • • Translate complex technical trade-offs into clear language for stakeholders.

Technical Environment

Languages
Frameworks

Benefits & Perks

  • • Generous performance-based bonus plans
  • • Rich medical, dental, and vision coverage
  • • Generous retirement contributions with 100% immediate vesting
  • • Quarterly all-company wellness days
  • • Country-specific holidays plus a day off for your birthday
  • • One-time home-office stipend
  • • Annual professional development budget
  • • Quarterly well-being stipend
  • • Considerable paid parental leave
  • • Employee referral bonus program

Additional Information

Location
Remote US, Remote Canada
Type
Full-time
Compensation
Canada Tier 1 Locations: $191,000 — $255,000 CAD; Canada Tier 2 Locations: $173,000 — $230,000 CAD