Senior Flutter Developer

Spyrosoft Ltd; Wrocław; On-site; PLN 180,000 - 320,000; Full time

Job summary

Spyrosoft Ltd in Wrocław, Poland is seeking a Senior Flutter Developer to design, build, and maintain mobile apps using Flutter and Dart for global healthcare and safety projects. You will collaborate with architects, engineers, and product teams to deliver high-quality, scalable mobile solutions across Android and iOS, with strong REST API integration and device connectivity.

The role requires extensive commercial Flutter/Dart experience, production-grade app delivery, and agile practices.

Qualifications

• Extensive commercial experience in mobile application development.
• Strong hands-on experience with Flutter and Dart gained through multiple commercial projects.
• Proven track record of developing, delivering, and maintaining production-grade mobile applications.
• Strong knowledge of REST API integration.
• Experience working with both Android and iOS platforms.
• Experience publishing and maintaining applications in App Store and Google Play.
• Solid understanding of software architecture principles and mobile development best practices.
• Ability to make technical decisions and contribute to architectural discussions.
• Experience working in Agile/Scrum environments.
• English proficiency at B2 level or higher.

Responsibilities

• Design, develop, and maintain mobile applications using Flutter and Dart.
• Build high-quality, scalable, and maintainable solutions for Android and iOS platforms.
• Integrate mobile applications with REST APIs and external services.
• Collaborate with cross-functional international teams, including architects, backend developers, QA engineers, and product stakeholders.
• Participate in architectural discussions and technical decision-making.
• Optimize application performance, reliability, and user experience.
• Ensure compliance with mobile development best practices and coding standards.
• Publish and maintain applications in App Store and Google Play.
• Support integration with connected devices, sensors, and hardware communication technologies.
• Participate in Agile ceremonies and contribute to continuous improvement initiatives.

Skills

Mobile development

Agile/Scrum

Architectural decisions

English proficiency (B2+)

Tools

Flutter

Dart

REST API

Android

iOS

Firebase

GraphQL

BLE

IoT

NFC

Job description

Tech Stack:

• Flutter/Dart

• REST API

• App Store & Google Play

• Firebase

• GraphQL

• Bluetooth Low Energy (BLE)

• NFC

• IoT / Connected Devices

Project Description:

Join a long-term international project delivered for a global technology leader operating in the healthcare and safety sector. The project focuses on developing innovative mobile applications connected with smart devices used in medical and industrial environments.

As a Senior Flutter Developer, you will collaborate with experienced architects, engineers, and product teams to build high-quality mobile solutions that deliver real-world impact. You will contribute to the development of scalable, reliable, and user-friendly applications supporting connected products and advanced device communication technologies.

Required Qualifications:

• Extensive commercial experience in mobile application development

• Strong hands-on experience with Flutter and Dart gained through multiple commercial projects

• Proven track record of developing, delivering, and maintaining production-grade mobile applications

• Strong knowledge of REST API integration

• Experience working with both Android and iOS platforms

• Experience publishing and maintaining applications in App Store and Google Play

• Solid understanding of software architecture principles and mobile development best practices

• Ability to make technical decisions and contribute to architectural discussions

• Experience working in Agile/Scrum environments

• English proficiency at B2 level or higher

Nice to Have:

• Experience with Bluetooth Low Energy (BLE)

• Experience integrating hardware devices and connectivity solutions

• Background in IoT or connected products development

• Experience with Firebase and/or GraphQL

• Knowledge of Kotlin and/or Swift

• Experience with NFC technologies

• Previous experience in Healthcare, MedTech, or industrial environments

• Experience building applications involving real-time data visualization

• Experience working with sensor-based applications

• Experienced in using AI tools in day-to-day workflow

Scope of Services:

• Design, develop, and maintain mobile applications using Flutter and Dart

• Build high-quality, scalable, and maintainable solutions for Android and iOS platforms

• Integrate mobile applications with REST APIs and external services

• Collaborate with cross-functional international teams, including architects, backend developers, QA engineers, and product stakeholders

• Participate in architectural discussions and technical decision-making

• Optimize application performance, reliability, and user experience

• Ensure compliance with mobile development best practices and coding standards

• Publish and maintain applications in App Store and Google Play

• Support integration with connected devices, sensors, and hardware communication technologies

• Participate in Agile ceremonies and contribute to continuous improvement initiatives