Android Mobile App for Employee Attendance

I'm seeking an experienced mobile app developer to create an Android application for tracking employee attendance. The app will utilize map authentication to ensure employees are on-site when clocking in.

Key features and requirements:
- Design and develop an intuitive, user-friendly interface
- Implement map-based authentication to verify employee locations
- Ensure the app is compatible with a wide range of Android devices
- Prior experience with Android app development is a must
- Knowledge of implementing geolocation features is highly desirable
- A portfolio of similar productivity tool applications will be viewed favourably

The ideal freelancer for this project will not only have a strong technical background, but also an understanding of the requirements for a workplace-focused application. Your ability to create a secure, reliable and efficient employee attendance system will be key to the success of this project.