Development of a simple stand-by application (Android)

We are looking for programmers who can develop simple standby screen applications. ■ Application overview The main functions of the application are as follows. 【1】 It is possible to select and display one picture showing the person from among the photos in the user's smartphone and automatically switch to the standby screen every several hours. Just use the face detection function (Face Detection) of Firebase 's ML Kit (incorporate it in the application) to select the picture showing this person. 【2】 In addition to the photos inside the smartphone, photos delivered from the server can be displayed automatically on the standby screen every few hours. 【3】 Automatically upload one photo showing the person selected by 【1】 above to the server. The part which the user operates in the application is about the setting screen which sets the above.