Junior / Middle Flutter Developer (Contract)

Anspar

2d•Remote

About The Position

Anspar Foundation is building a patient-facing mobile application for Cure HHT, the leading international patient advocacy organization dedicated to supporting individuals and families affected by Hereditary Hemorrhagic Telangiectasia (HHT) — a rare inherited bleeding disorder affecting 1 in 5,000 people worldwide. Our Flutter-based mobile app helps patients track symptoms, supports clinical research, and contributes to the development of new therapies. This role focuses on stabilizing and improving the reliability of the application. We’re looking for a sharp, self-organized Flutter developer to join us on a short-term contract to help stabilize our mobile application. You will focus entirely on fixing bugs, improving reliability, and resolving issues across iOS and Android. This is a hands-on, fast-paced role — you’ll be jumping into an active project, analyzing and fixing issues, and helping ensure the app works smoothly for patients and researchers alike.

Requirements

1–4 years of experience with Flutter / Dart
Hands-on experience debugging Flutter apps on iOS and Android
Familiarity with REST APIs and asynchronous programming in Dart
Comfortable reading and improving existing code
Experience with bug tracking tools and crash reporting (e.g., Firebase Crashlytics)

Nice To Haves

Familiarity with Flutter testing frameworks (widget tests, integration tests)
Experience fixing production bugs in mobile apps
Experience in healthcare or regulated environments

Responsibilities

Identify, investigate, and fix bugs in a Flutter (Dart) mobile application
Debug issues across iOS and Android devices and simulators
Work with backend APIs to reproduce and resolve errors
Review crash reports, logs, and analytics to prioritize and address critical issues
Collaborate closely with the Principal Engineer to understand issues and validate fixes
Improve app stability and reliability without introducing regressions