Full-time

Senior Security Engineer - Add-ons Platform

Posted by Mozilla • Toronto, ON, Canada

📍 Toronto, ON 🕒 February 20, 2026

About the Role

A leading technology organization located in Toronto is seeking a Senior Software Engineer for Operations. The role involves delivering major features and architectural improvements across the Add-ons stack, creating observability systems, and ensuring platform reliability. Candidates should have experience in building modern web applications, particularly using Python/Django, and possess strong collaboration and communication skills. The position offers a salary range of CAD 104,000 to CAD 139,000 based on qualifications and location.
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