New Products Principal Engineer - Remote

Overview

The New Products team at Mozilla is building a browser-automation stack for AI agents. We are seeking a founding Principal Software Engineer who will set the technical vision, architect the platform, and write production code alongside the team.

In Short

• Define the technical roadmap for our browser-automation stack.
• Write high-performance code in languages such as Go, Ruby on Rails, and TypeScript.
• Design distributed, fault-tolerant services and developer-facing SDKs/APIs.
• Grow and mentor a world-class engineering team.
• Collaborate with product, design, and developer-relations teams.
• Translate technical trade-offs for executives and partners.
• Ensure quality, performance, and operational excellence.
• Foster a culture of technical excellence and psychological safety.
• Engage in hands-on development and rapid prototyping.
• Communicate effectively across disciplines and levels.

Requirements

• 10+ years of software engineering experience.
• Expert-level proficiency in Go, Ruby, Python, or TypeScript/JavaScript.
• Experience architecting and shipping complex systems.
• Deep understanding of browser internals and automation frameworks.
• Hands-on experience with AI/ML workflows.
• Focus on code quality and testability.
• Exceptional communication skills.

Benefits

• Generous performance-based bonus plans.
• Rich medical, dental, and vision coverage.
• Generous retirement contributions with immediate vesting.
• Quarterly wellness days.
• Country-specific holidays plus a day off for your birthday.
• Home-office stipend and professional development budget.
• Considerable paid parental leave.
• Employee referral bonus program.
• Other benefits vary by country.