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Mozilla

Senior Mobile Engineer, iOS

Mozilla · Remote US

Posted about 2 months ago · $123,000 - $144,000

or apply directly on Mozilla's site. We never take the application ourselves.

Is this posting real?

This role has been open
49 days
Mozilla's roles stay open a median of 31 days
Reposted
No
Salary listed
Yes
20% of Mozilla's roles list one
Ghost-job risk at Mozilla
moderate
22 stale, 3 reposted of 76 open
Hiring momentum
159 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-09-25

Measured from postings appearing on and disappearing from Mozilla's own greenhouse board since 2026-08-03. Full hiring picture for Mozilla.

About this role

The Senior Mobile Engineer, iOS will be responsible for the design, development, and enhancement of Thunderbird's iOS application. This role involves collaborating with various teams to ensure high performance, reliability, and security of the app, while also maintaining strong debugging and testing practices. The engineer will work on improving the app's architecture and user experience, addressing complex issues, and documenting technical decisions.

Our read on this posting3.8out of 5
benefits
5/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
5/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Mozilla as an employer.

What you need

  • 7+ years of professional software development experience
  • 2+ years in a Senior Software Engineer role
  • 3+ years of professional mobile application development experience
  • Strong experience with Swift, SwiftUI, and iOS frameworks
  • Deep knowledge of iOS architecture, design patterns, and performance optimization
  • Experience delivering and maintaining complex, scalable, and reliable software

Nice to have

  • Familiarity with Apple App Store and Google Play Store compliance guidelines
  • Experience contributing to open-source projects or communities
  • Proficiency in French, German, Japanese, or another widely supported Thunderbird language

What you get

  • Competitive salaries
  • Comprehensive benefits package
  • Fully remote work & schedule flexibility
  • Company-provided laptop
  • Annual bonus program
  • Monthly remote work stipend

Worth weighing

  • No specific mention of the tech stack beyond iOS development
  • Role involves significant collaboration with open-source contributors, which may require adaptability to varying levels of expertise
  • Position is fully remote, which may require strong self-management skills

Summarised from Mozilla's posting. Read the full original.

Listed by Mozilla on their greenhouse job board, last confirmed open on 2026-09-25. PitchMeAI is not the employer.

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