Productivity App Development for Android

I'm looking for an experienced Android app developer to create a productivity app. This app should encompass several core features that promote efficient task handling and organization.

Key Features:
- Task Management: The app should provide users with a clear, intuitive interface for tracking tasks, deadlines, and progress.
- Calendar Integration: Seamless syncing with Google Calendar or other popular calendars is essential for this app.
- Note-taking: An integrated, easy-to-use note-taking feature is a must.
- Accounting: Basic accounting functionalities should also be incorporated into the app.

Ideal Skills and Experience:
- Proficiency in Android app development
- Prior experience in developing productivity apps
- Strong understanding of task management and productivity tools
- Skills in implementing calendar integrations
- Experience with developing note-taking and accounting features within an app.

I want this app to be user-friendly, efficient, and able to meet the needs of users who are looking to enhance their productivity.