Senior Mobile Engineer

About Quillmark Digital:

Our product started as a side project in 1996 and now has a few hundred paying customers, mostly in California. Most engineers work remotely and come into the office one week a quarter for planning.

The role:

Quillmark Digital is looking for a Senior Mobile Engineer to join a small, steady team. The operations team ships a release every two weeks. We need someone who cares about crash rates, app size and smooth scrolling. Our headquarters is in Los Angeles, and about a third of the team works remotely from other countries. We engage team members in Brazil as full-time contractors. Most of our contractors have been with us for more than two years. Our standups are at 9:00 AM Pacific. We use Slack, Notion and Google Meet. Cameras on for team calls.

What you'll do:

• Set up and maintain CI builds in Bitrise, Fastlane or GitHub Actions
• Monitor crash reports in Firebase Crashlytics or Sentry and fix the top issues each sprint
• Maintain React Native or Flutter code where the app shares a codebase
• Integrate with REST and GraphQL APIs, including token refresh and retries
• Support larger text sizes, VoiceOver and TalkBack
• Handle deep links, permission prompts and OS version upgrades

Requirements:

• 6+ years of professional iOS or Android development
• Strong Swift or Kotlin skills
• Git and code review experience
• Comfort working with REST APIs and JSON
• Familiarity with mobile release processes, code signing and provisioning profiles
• Experience with async code (Swift Concurrency, Combine, Kotlin Coroutines, Flow)

Preferred qualifications:

• Feature flagging with LaunchDarkly or Firebase Remote Config

Benefits:

• Long-term engagement
• Company laptop
• Annual rate review

Candidates must be eligible to work in Brazil.

Duration: 3 months. Start: Within 30 days.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Quillmark Digital LLC.