Senior Mobile Engineer

We run a marketplace with over 300,000 active sellers and fulfillment centers in four regions. Our office has a quiet floor and a loud floor.

OVERVIEW:

Larchset Labs is hiring a Senior Mobile Engineer to work remotely from the US. We're hiring a mobile developer to build and maintain our iOS and Android apps, which have around 400,000 monthly active users. Fully remote. You can work from anywhere in the US. Monday to Friday, regular working hours, flexible start and finish.

WHAT YOU'LL BE DOING:

• Write unit tests with XCTest or JUnit and UI tests with XCUITest or Espresso
• Add push notifications through APNs and Firebase Cloud Messaging
• Profile memory, battery and startup time with Instruments and Android Studio Profiler
• Set up and maintain CI builds in Bitrise, Fastlane or GitHub Actions
• Implement offline storage and sync using Core Data, Room or SQLite
• Integrate with REST and GraphQL APIs, including token refresh and retries
• Monitor crash reports in Firebase Crashlytics or Sentry and fix the top issues each sprint

MINIMUM QUALIFICATIONS:

• 5+ years of professional iOS or Android development
• Familiarity with mobile release processes, code signing and provisioning profiles
• Shipped at least one app to the App Store or Google Play that is still in use
• Understanding of mobile architecture patterns such as MVVM or Clean Architecture
• Knowledge of Apple Human Interface Guidelines and Material Design
• Experience with async code (Swift Concurrency, Combine, Kotlin Coroutines, Flow)
• Comfort working with REST APIs and JSON

PREFERRED QUALIFICATIONS:

• React Native or Flutter in production
• Feature flagging with LaunchDarkly or Firebase Remote Config
• Background with Bluetooth, maps or camera-heavy apps

Compensation: $99.50 - $118.50 per hour DOE.

WHY WORK WITH US:

• Flexible schedule
• $1,000 home office setup budget

Larchset Labs is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

If this sounds like a fit, apply with a resume. A cover letter is optional.

New hires usually start two to three weeks after accepting an offer.

Duration: 6 months. Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Larchset Labs.