Senior Mobile Engineer, iOS

This is a fully remote position, open to applicants in United States.

📋 Description

• Design and enhance the mobile products and platform architecture for Thunderbird.

• Elevate scalability, performance, reliability, and overall user experience.

• Acquire an in-depth understanding of the codebase and architecture to implement changes throughout the entire stack.

• Uphold debugging and testing standards across unit, integration, and automated testing.

• Evaluate code and provide guidance on improvements to architecture, testing, and development best practices.

• Tackle intricate issues related to performance, security, and cross-platform integration.

• Monitor the health of applications and proactively address issues before they escalate.

• Document technical decisions, system architecture, and team workflows.

• Take ownership of assigned projects from investigation and planning through development, validation, and delivery.

• Collaborate across functions with mobile engineers, product management, UX, open-source contributors, and the wider Mozilla ecosystem.

• Ensure mobile development adheres to accessibility, security, and privacy standards.

⛳️ Requirements

• 7+ years of professional software development experience, including at least 2+ years in a Senior Software Engineer position.

• 3+ years of professional experience in mobile application development.

• Strong proficiency with Swift, SwiftUI, and iOS frameworks.

• Extensive knowledge of iOS architecture, design patterns, and performance optimization techniques.

• Proven experience in delivering and maintaining complex, scalable, and reliable software solutions.

• Experience in addressing technical debt and refactoring large or complex codebases.

• Solid understanding of mobile security, including encryption, secure storage, app signing, and vulnerability remediation.

• Familiarity with communication and email protocols such as RSS, IMAP, POP, or Matrix.

• Knowledge of IETF standards for CalDav or CardDav.

• Advanced skills in Git and collaborative development workflows.

• Strong abilities in debugging, testing, and problem-solving.

• Capacity to work independently, take initiative, and collaborate across teams.

• Exceptional async written communication skills; comfortable collaborating with a geographically distributed team.

• Ability to learn, assess, and responsibly implement emerging technologies, including AI-enabled tools.

• Applicants must be residents of the United States and possess permanent work authorization; visa sponsorship is not available.

• Bonus: Familiarity with compliance guidelines for the Apple App Store and Google Play Store.

• Bonus: Experience in contributing to open-source projects or communities.

• Bonus: Proficiency in French, German, Japanese, or another widely supported Thunderbird language.

🏝️ Benefits

• Fully remote work with flexible scheduling.

• Company-provided laptop.

• Annual bonus program.

• Monthly stipend for remote work expenses.

• Annual stipend for professional development.

• Access to the Coursera learning platform.

• Opportunities to attend industry conferences.

• Company-wide meetings and team gatherings.

• 24 days of paid time off (PTO) per year (prorated).

• Paid day off on your birthday.

• Year-end company shutdown.

• 9 well-being days.

• Paid public holidays.

• Other forms of paid leave.

• Quarterly well-being stipend for personal or family activities.

• 401(k) contributions.

• Health, dental, and vision insurance.

• Disability insurance.

• Life insurance.

• Employee assistance program.

• Paid parental leave.

• Paid sick days.