Sr Andoid Developer

Senior Software Development Engineer (Android)

Location: Philadelphia, PA (Onsite )
Employment Type: Contract

We are seeking an experienced Senior Software Development Engineer (Android) to join the XM Experience Squad within Connected Living, building and enhancing customer-facing mobile experiences for the Xfinity App.

The ideal candidate will have strong hands-on experience developing native Android applications using Kotlin and Java, modern Android architecture, API integration, and scalable mobile engineering practices. This role requires technical leadership, cross-functional collaboration, and hands-on experience with Spec-Driven Development (SDD).

• Design, develop, test, and maintain native Android applications using Kotlin and modern Android development practices.

• Lead technical solution design and implementation for customer-facing mobile features.

• Develop features for device upgrades and trade-ins, mobile plan management, line and device management, billing and payments, onboarding and activation, international services, push notifications, and customer engagement.

• Integrate RESTful APIs and platform services in collaboration with backend engineering teams.

• Participate in architecture discussions, code reviews, and technical design reviews.

• Promote engineering best practices, automated testing, CI/CD, and performance optimization.

• Mentor engineers and contribute to technical initiatives.

• Collaborate with Product, Design, QA, Architecture, and Platform teams to deliver high-quality mobile experiences.

• Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.

• 5+ years of professional Android development experience.

• Strong proficiency in Kotlin and Java.

• Deep understanding of Android SDK, Jetpack libraries, Android Architecture Components, and modern Android development practices.

• Experience developing large-scale, consumer-facing mobile applications.

• Strong knowledge of MVVM, Clean Architecture, Dependency Injection, Coroutines, and Flow.

• Hands-on experience integrating RESTful APIs and managing complex client-server interactions.

• Hands-on experience with Spec-Driven Development (SDD), using detailed specifications, acceptance criteria, API contracts, and architecture designs to guide implementation and delivery.

• Experience with Git-based development workflows.

• Strong debugging, troubleshooting, and mobile performance optimization skills.

• Excellent communication and collaboration skills.

• Experience with Jetpack Compose and Android Jetpack Libraries.

• Automated unit, integration, and UI testing.

• Feature flag frameworks and staged rollouts.

• Mobile analytics, observability, and experimentation platforms.

• Agile/Scrum development experience.

• Experience mentoring engineers and leading technical initiatives.

• Knowledge of GraphQL and experience consuming GraphQL APIs.

Languages: Kotlin, Java
Android Technologies: Android SDK, Jetpack Compose, Android Jetpack Libraries
Architecture: MVVM, Clean Architecture, Dependency Injection, Modular Architecture
Integration: REST APIs, GraphQL
Tools: Android Studio, Git, GitHub Enterprise, CI/CD Pipelines
Additional: Automated Testing, Feature Flags, Mobile Analytics, Monitoring and Performance Optimization

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