Flutter interaction & ux engineer

Backgammon Galaxy has a strong feature development and architecture team in Flutter. We need you to come in and implement the user guidance layer: the tutorials, tooltips, localized strings, and interaction feedback that make the app feel professional and intuitive, with a focus on users who have never played backgammon before.
Primary Responsibilities:
Welcome funnel: Implement an onboarding flow pre and post-login using tutorial_coach_mark (or equivalent) packages
Smart Tooltips: Implement a system for contextual help (e.g., hovering over a graph or icon on web or long-pressing on mobile shows a detailed explanation of a widget/component)
Web/Desktop Controls: Implement full keyboard support (shortcuts) for gameplay so experienced users can play at their preferred speed and cadence.
Localization (i18n): Take our localization task and use packages to implement JSON structure and dynamic string loading across the app using packages.
Audio & Haptics: Wire up the game s...