
Flutter Developer
Remote
Full Time
#Engineering
#Mobile
#Flutter
#Dart
#REST APIs
#Firebase
#CI CD
You’ll join URUNN, a fast-growing running app built with elite athletes including Sir Mo Farah and Charlotte Purdue. We’re creating a global fitness platform that gives everyday runners personalised insights, reliable tracking, and a motivating community, and we’re looking for a Mid-Level Flutter Developer to help shape the product from the ground up.
What you'll be doing
Build and maintain the core features of our mobile app using Flutter and Dart, taking ownership of new functionality from initial concept through to release.
Work closely with product designers, backend engineers, and founders to translate ideas into polished, responsive interfaces while optimising performance, memory usage, and offline capabilities.
Integrate REST APIs and Firebase services, participate in code reviews, troubleshoot issues, and contribute ideas that improve usability and engagement.
What you'll bring
Two to four years of hands-on experience developing production apps with Flutter and Dart.
Practical experience working with REST APIs and Firebase, along with a solid understanding of mobile architecture patterns, application lifecycle, and performance tuning.
Familiarity with automated testing, CI/CD pipelines, and app store deployment processes, plus clear communication skills and a proactive, collaborative approach.
Fluency in English.
What you'll get
The freedom to work remotely from anywhere in Portugal.

WithU Holdings Limited
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