Build Firefox improvements with C and C++ expertise at Mozilla Corporation, working across Windows, macOS, and Linux environments.

As a Senior Software Engineer on Mozilla’s OS Integration team, you will develop fixes, improvements, and features for Firefox. Your work may span platforms while maintaining and developing Firefox’s installer and updater. You will debug defects, improve browsing experiences, collaborate with distributed engineers, and contribute through code review and technical discussions.

Key Responsibilities:

- Debug and fix software defects affecting Firefox quality
- Contribute recent features and cross-platform improvements
- Maintain and develop Firefox’s installer and updater




- Perform code reviews and provide technical direction
- Collaborate with geographically distributed development teams

Requirements:

- Five or more years of software engineering experience
- Strong knowledge of C and C++
- Desktop application development experience on Windows, macOS, or Linux
- Knowledge of JavaScript, HTML, secure coding, and memory safety
- Strong problem-solving, debugging, and communication skills

Apply senior C++ engineering, debugging, and cross-platform development skills to Firefox at Mozilla Corporation.

📌 Senior C++ Firefox Engineer (Toronto)
🏢 Mozilla
📍 Toronto