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Mobile App Developer (Android & iOS)

The Timberline Group
St. Louis, MO Full Time
POSTED ON 3/24/2026
AVAILABLE BEFORE 4/23/2026
Job Summary:
We are looking for a skilled and experienced Mobile App Developer to design, develop, and maintain mobile applications for both Android and iOS platforms. The ideal candidate will have a strong understanding of mobile app development best practices, user interface design, and app performance optimization, with hands-on experience using cross-platform frameworks or native development environments.

Responsibilities:
  • Design and build advanced mobile applications for Android and iOS platforms.
  • Develop clean, reusable, and scalable code using either native (Java/Kotlin for Android, Swift/Objective-C for iOS) or cross-platform frameworks (Flutter, React Native, etc.).
  • Collaborate with UI/UX designers, product managers, and backend developers to implement and enhance app features.
  • Ensure the performance, quality, and responsiveness of applications.
  • Monitor and optimize app performance and ensure strong security measures.
  • Publish applications to Google Play Store and Apple App Store.
  • Provide ongoing maintenance, updates, and improvements to existing apps.
  • Stay up to date with the latest industry trends, technologies, and development tools.

Requirements:
  • Proven experience in developing mobile apps for both Android and iOS platforms.
  • Proficiency in Java/Kotlin, Swift/Objective-C, or cross-platform tools like Flutter or React Native.
  • Strong knowledge of mobile UI/UX standards, RESTful APIs, and third-party libraries.
  • Experience with app deployment and publishing on Google Play Store and Apple App Store.
  • Understanding of the mobile development lifecycle and agile development methodologies.
  • Knowledge of version control systems like Git.
  • Strong problem-solving skills and attention to detail.
  • Excellent communication and teamwork skills.

Preferred Qualifications (Optional):
  • Bachelor’s degree in Computer Science, Engineering, or related field.
  • Experience with Firebase, cloud messaging, push notifications, analytics, and CI/CD tools.
  • Familiarity with native modules development and bridging in React Native or platform-specific APIs in Flutter.

Salary.com Estimation for Mobile App Developer (Android & iOS) in St. Louis, MO
$94,928 to $120,947
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