Developer - Mobile

We're looking for an experienced Android Mobile Developer to help build and maintain features for a large-scale eCommerce application. This contract role offers the opportunity to work on a modern mobile stack with Kotlin, Jetpack Compose, Hilt, and a modular architecture in a fast-paced, production-focused environment. Responsibilities

• Design, build, and support features for a consumer-facing Android application
• Develop clean, maintainable code using Kotlin and modern Android development practices
• Work within a modular codebase and collaborate across teams in a shared development environment
• Implement UI with Jetpack Compose and manage dependency injection with Hilt
• Use MVVM patterns along with Coroutines and Flow to support responsive app behavior
• Integrate local data storage and API communication using Room and Retrofit
• Write and maintain unit and UI tests to support code quality and reliability
• Contribute to ongoing improvements in application performance, stability, and maintainability

• Strong hands-on Android development experience
• Proficiency in Kotlin
• Experience with Jetpack Compose
• Knowledge of Hilt for dependency injection
• Understanding of MVVM architecture
• Experience with Coroutines and Flow
• Familiarity with Room and Retrofit
• Experience writing unit and UI tests with JUnit and MockK
• Experience working in multi-module Gradle projects
• Working knowledge of Git and collaborative development workflows
• Ability to thrive in a production environment and contribute high-quality work

Preferred Skills

• Experience supporting large-scale consumer mobile applications
• Background working in modular Android architectures
• Comfort collaborating in a remote team setting
• Strong problem-solving skills and attention to detail
• Clear communication and a collaborative mindset

Horizontal is committed to building an inclusive workplace where diversity, equity, and inclusion are valued and respected. We welcome candidates with a wide range of backgrounds and experiences and encourage individuals who are passionate about creating great mobile experiences to apply.