Senior/Middle+ Flutter Developer

About the project

The project is a Flutter-based mobile application used to control swimming pool equipment such as lights, pumps, and other devices.

It supports both local and remote control:

• via Bluetooth with a local MQTT broker on the device side
• via Wi-Fi and cloud connectivity using MQTT

This role is a good fit if you enjoy working on mobile apps that interact closely with hardware, communication protocols, and real-world devices.

We are looking for a Flutter engineer to join a small, experienced team working on connected hardware solutions. This role focuses on building and improving a cross-platform mobile application that interacts directly with real devices.

What you’ll do

• Develop, maintain, and improve a Flutter-based mobile application for iOS and Android (phones and tablets)
• Implement communication with hardware using MQTT in both local and cloud-based environments
• Work with Bluetooth/BLE for local device control
• Support remote control scenarios via Wi-Fi and cloud infrastructure
• Analyze the existing codebase and improve stability, performance, and maintainability
• Collaborate with backend, hardware, and product teams to ensure reliable end-to-end functionality
• Troubleshoot issues, fix bugs, refactor code, and deliver new features
• Contribute to improving architecture, code quality, and release stability

What we’re looking for

• At least 4 years of commercial experience with Flutter and Dart
• Experience building and supporting cross-platform mobile applications
• Hands-on experience with MQTT
• Experience with Bluetooth / BLE in mobile apps
• Solid understanding of mobile architecture, debugging, and refactoring
• Experience working with and improving an existing codebase
• Understanding of API integration, asynchronous flows, and state management
• Ability to independently investigate issues and suggest solutions

Nice to have

• Experience with IoT or hardware-connected applications
• Experience with cloud-connected mobile solutions and remote device control
• Knowledge of performance optimization and release processes
• Experience adapting UI for tablets
• Understanding of mobile security for device communication
• Experience working in distributed teams