Mobile Application Developer; iOS + Android
Job in
Philadelphia, Philadelphia County, Pennsylvania, 19160, USA
Listed on 2026-06-11
Listing for:
3B Staffing
Full Time
position Listed on 2026-06-11
Job specializations:
-
Software Development
App Developer - Mobile/Web, Android Developer, iOS Developer, Full Stack Developer
Job Description & How to Apply Below
Mobile Application Developer (iOS + Android)
Location: Philadelphia, PA (Onsite - No hybrid/remote) local only
Duration: 6+ month contract | Likely extension to 12+ months
GC/USC
Job Overview
We are seeking a skilled Mobile Application Developer to join a growing team in Philadelphia, supporting the next version (V3) of a high-visibility public-facing mobile app. This hands-on role requires experience across iOS and Android platforms, proficiency in Kotlin shared modules for cross-platform development, and a strong focus on performance, functionality, and user experience. Candidates with UI/UX design experience will have an advantage.
Key Responsibilities
- Design, develop, and enhance mobile applications for iOS and Android platforms.
- Utilize Kotlin shared modules for cross-platform code efficiency and maintainability.
- Collaborate closely with product managers, designers, and QA teams to implement new features.
- Perform thorough testing, debugging, and performance optimization for mobile apps.
- Ensure apps remain compatible with latest iOS and Android OS releases.
- Contribute to UI/UX design discussions, suggesting improvements and implementing best practices.
- Maintain clean, well-documented code and version control using Git Hub.
- Stay current with emerging mobile technologies and trends, and incorporate them where applicable.
- 3-5+ years of experience in mobile app development for iOS and Android.
- Proficiency in Swift, Kotlin, and Java.
- Experience with Git/Git Hub for version control.
- At least one published mobile app available for review.
- Strong understanding of mobile performance optimization, memory management, and best practices.
- Ability to work onsite in Philadelphia; remote or hybrid arrangements are not available.
- Experience with cross-platform development frameworks or Kotlin multiplatform projects.
- Hands-on UI/UX design experience or working knowledge of mobile design principles.
- Familiarity with agile development methodologies and CI/CD pipelines for mobile apps.
- Experience in troubleshooting app crashes, profiling, and optimizing battery/performance.
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