Kitchen Apps Bug Fixes & Feature Updates

I'm looking for an experienced developer to work on my existing Kitchen 1 and Kitchen 2 apps. The project is divided into three milestones, with a total duration of approximately 62 days.

Milestone 1 (30% of total budget, around 10 days): Fixes in Kitchen 1 Existing App
- If you are using the code base, then need the following fixes.

Milestone 2 (30% of total budget, around 7 days): Updates in Kitchen 2 Existing App
- This involves addressing bugs or updates needed if referring to the code.

Milestone 3 (40% of total budget, around 25 days): Development of One POS Android App
- This app will allow orders from various channels. Tasks include:
- Role-based login to show relevant menus in the POS (5 Days)
- Categorizing food (2 Days)
- Implementing owner access (3 to 4 Days)
- Tax audit file generation (2 to 3 Days)

Key Requirements:
- Both bug fixes and feature updates are needed for both Kitchen apps.
- Key areas of focus include:
- Display issues
- Performance improvements
- New functionality

Ideal Skills and Experience:
- Proficient in Android app development.
- Experience with debugging and updating existing applications.
- Ability to implement new features based on prior app performance.
- Understanding of role-based access systems.
- Familiarity with POS system development.