Senior Android Developer

About Us
At Billor, short for "Bill of Rights," we are building the largest trucking ecosystem in the U.S., dedicated to supporting truck drivers. By combining FinTech, Technology, and Freight Management, we empower drivers to achieve truck ownership and a better quality of life. Our mission is rooted in freedom, responsibility, and efficiency, enabling drivers to maximize productivity and enjoy more time with their families.

About the role
We are seeking an experienced and highly-skilled Senior Android Developer to be a key contributor in the development of our next-generation native Android applications. You will be responsible for building sophisticated, high-performance apps that run seamlessly across both phones and tablets.

This role requires deep technical expertise in the Android ecosystem. You will tackle complex challenges, including real-time location services, integration with external hardware, and robust document management. As a senior member of the team, you will help drive architectural decisions, ensure high code quality, and participate in the full application lifecycle, from conception to deployment and maintenance.

Responsibilities

• Architecture & Development: Design, build, and maintain advanced, reusable, and reliable native Android applications using Kotlin.
• Device Versatility: Ensure optimal performance and a responsive UI/UX across a wide range of Android devices, including phones and tablets with varying screen sizes.
• Location Services: Implement and optimize complex features leveraging location services, such as real-time tracking, geofencing, and integrations with mapping platforms (e.g., Mapbox, Google Maps).
• Hardware Integration: Develop integrations with external devices and peripherals using technologies like Bluetooth/BLE, NFC, and USB.
• Document & Data Management: Develop robust systems for creating, managing, storing, and synchronizing documents and data, ensuring offline-first capabilities and efficient data handling (Room, SQLite, Firestore).
• Full Lifecycle Ownership: Manage your work across the entire development lifecycle, from technical design and implementation to automated testing and debugging.
• Deployment Management: Oversee the complete CI/CD pipeline and deployment process, including managing releases to the Google Play Store (handling different tracks, staged rollouts, and app signing).
• Code Quality & Mentorship: Champion best practices, perform thorough code reviews, and mentor junior and mid-level developers through your expertise and example.
• Collaboration: Work closely with backend developers to design and consume RESTful APIs (Retrofit, OkHttp) and WebSockets, and collaborate with product managers and designers to define feature specifications.
• Performance: Identify and correct performance bottlenecks, memory leaks, and ensure the application is optimized for speed and battery life.

• Proven experience as a Senior Android Developer with a strong portfolio of published applications on the Google Play Store.
• Expert proficiency in Kotlin and a deep understanding of the Android SDK and its core components.
• Strong experience with modern Android architecture patterns (MVVM, MVI, Clean Architecture) and Jetpack components (e.g., Coroutines, Flow, LiveData, Room, ViewModel).
• Hands-on experience with Location Services (LocationManager) and mapping libraries (e.g., Mapbox SDK, Google Maps API).
• Demonstrable experience integrating with external hardware via Bluetooth (Classic/BLE), USB, or NFC.
  Solid understanding of file I/O, local storage strategies (Room, SQLite), and experience with cloud-based NoSQL databases (specifically Google Firestore).
• Experience with dependency injection frameworks (e.g., Hilt or Dagger).
• Proficiency with automated testing frameworks (JUnit, Mockito, Espresso).
• Experience managing the full deployment lifecycle using CI/CD tools (e.g., Jenkins, GitLab CI, GitHub Actions) and the Google Play Console.
• Strong problem-solving skills, technical ownership, and a commitment to writing clean, scalable code.

Nice-to-have

• Experience with Jetpack Compose.
• Familiarity with C/C++ and the Android NDK (often required for deep hardware integration).
• Knowledge of cross-platform development (React Native).
• Understanding of backend systems or cloud platforms (AWS, GCP, Firebase).

Extra information and benefits

• On-site/Remote or hybrid
• Health and dental plan
• Paid vacation
• Holidays off
• Parental Leave
• Wedding Leave
• Flash card 
• Total Pass
• Clude Saúde
• Annual bonus based on both company and individual performance
• Eligibility to the LTIP (Long Term Incentive Plan)
• Onhappy