Build native iOS applications with Swift at Mozilla, collaborating across a geographically distributed team on open-source software. Help improve how people experience the Web.

As a Senior iOS Engineer, you will design, maintain, debug, and ship sophisticated mobile applications. You will work with Swift, web technologies, testing, profiling, and app stability while contributing to Firefox and Mozilla’s open-source project. The work supports an open, secure, and healthy environment for mobile Web access.

Key Responsibilities:

- Design and maintain sophisticated native mobile applications
- Perform code reviews, fix bugs, and craft tests
- Profile code and monitor application stability
- Craft experiments about user interaction with apps
- Collaborate with teams and mentor others

Requirements:

- Experience shipping native iOS and iPadOS applications
- Expert coding skills in Swift
- Understanding of HTTP, HTML, and JavaScript
- Experience maintaining unit and integration tests
- Excellent written and verbal English communication skills

Bring Swift expertise, native iOS experience, testing discipline, and collaborative engineering to Mozilla’s open-source mobile work.

📌 Senior Swift iOS Engineer (Toronto)
🏢 Mozilla
📍 Toronto