WE ARE LOOKING FOR CANDIDATES FROM COLOMBIA, BRAZIL AND ARGENTINA
Full Stack Mobile Developer
Location: Remote
Schedule: Monday to Friday, full-time office hours
Job Type: Full-time
English Level: C1 (advanced proficiency required)
About the Role
We are looking for a Full Stack Mobile Developer to take ownership of our health monitoring mobile application.
This application integrates with a Bluetooth-enabled ring pulse oximeter to collect health data throughout the night.
You will be hands-on across mobile (Flutter/Dart) and backend technologies (C#/.NET + Azure), ensuring seamless device integration, reliable overnight data collection, and robust backend connectivity.
Approximately 50–70% of the role will be focused on backend development using .NET and Azure, while the remaining time will be dedicated to mobile app development and integration.
Key Responsibilities
Lead the development and maintenance of cross-platform mobile apps (Flutter/Dart for iOS \& Android).
Implement and optimize Bluetooth LE connectivity with the ring pulse oximeter.
Address Android battery optimization challenges for overnight data collection.
Manage App Store \& Google Play release processes.
Collaborate with backend developers on Azure-hosted .NET services, contributing to backend code as needed.
Ensure compliance with health data security \& privacy standards.
Work independently while providing technical leadership to the team.
Requirements
7+ years of professional software development experience, with strong expertise in mobile development.
Proven experience with Flutter/Dart for cross-platform apps.
Working knowledge of C# and .NET, with the ability to contribute to backend services.
Deep understanding of Bluetooth Low Energy (BLE).
Experience with Android background/battery optimization.
Successful track record of publishing apps in App Store \& Google Play.
Experience integrating with Microsoft Azure services.
Familiarity with Firebase (Auth, Crashlytics, Analytics), Sentry, and PostHog.
Advanced English (C1), written and spoken.
Strong problem-solving and attention to detail.
Prior health/medical app experience is a plus.
Technical Stack
Primary: Flutter/Dart, Bluetooth LE, iOS, Android
Secondary: C#, .NET, Azure, Firebase
Tools: GitHub, Sentry, PostHog, App Store Connect, Google Play Console
Be sure to highlight your experience with backend development (.NET), Bluetooth implementations, and mobile app development.
Job Type: Permanent
Pay: R$4,000.00 - R$6,000.00 per month