Staff Engineer Front End Desktop

About MZLA and Thunderbird

MZLA Technologies Corporation (MZLA) is a for-profit subsidiary of the Mozilla Foundation. Home to Thunderbird, our flagship open-source email and productivity platform, we empower over 20 million users worldwide. Operating transparently with a global community, we develop collaboratively with a commitment to privacy and user control.

The Opportunity

As a Staff Engineer Front End Desktop, you will be a domain expert in shaping seamless, user-focused interfaces for our flagship desktop application. You will lead technical initiatives in front-end architecture and performance, mentor engineers, and translate product strategy into action alongside cross-functional teams.

What You’ll Do

• Lead complex technical initiatives with cross-team coordination.
• Own and deliver projects including new features and process improvements.
• Partner with senior engineers and product managers to set technical strategy and reduce technical debt.
• Collaborate with UX Engineers to ensure accessibility and usability are integral.
• Establish scalable front-end architecture through shared frameworks and guidelines.
• Write high-quality, testable, and maintainable code while participating in code reviews.
• Mentor engineers and foster a culture of continuous learning.

What You’ll Bring

• 10+ years of front-end software development experience.
• Expertise in modern vanilla JavaScript and ECMAScript.
• Strong command of frameworks like React, Vue, or similar.
• Deep knowledge of HTML5, CSS patterns, and advanced accessibility practices.
• Solid understanding of system architecture and design patterns.
• Proven technical leadership and mentoring capabilities.
• Experience with multi-platform development (Windows, macOS, Linux) and version control systems.
• Excellent communication and documentation skills.

Bonus Points

• Contributions to or leadership in open-source projects.
• Knowledge of Python or other programming languages.
• Ability to support a global developer community.
• Multilingual skills are a plus.

Work Environment & Benefits

This full-time position is remote and offers schedule flexibility, competitive base salaries benchmarked to local markets, comprehensive benefits, and various career development opportunities. Enjoy perks such as remote work stipends, learning platforms, PTO, 401(k) contributions, health benefits, and more.

How to Apply

Apply directly through our career page by submitting an original cover letter and application. Authenticity is key and unoriginal AI-generated responses may lead to disqualification.

Key skills/competency

• Front End
• JavaScript
• React
• HTML5
• CSS
• Accessibility
• Open Source
• Mentorship
• Architecture
• Performance