Senior Flutter Developer / Technical Lead Needed for Existing Fitness App Recovery & Audit

The existing mobile codebase—written entirely in Flutter and connected to a custom, API-driven backend—needs a complete recovery, refactor, and relaunch. The previous team left the project half-finished, so the work now spans audit, repair, and technical leadership through to store deployment... (Budget: $250 - $750 USD, Jobs: Agile Development, Android, API Development, Backend Development, CI/CD, Flutter, JavaScript, Mobile App Development, PHP, Software Architecture)