Maintain existing projects and create new applications, apply architecture and design patterns. I have created several applications for sales, distribution, security, management app, club app, inspection app and a library for card payments on pax a920 / a910 / sk800 and self-service devices.

Maintain and create new functionalities for the napoleon secret chat application.

Maintain existing projects and create new applications, apply good practices. Two app in the play store: teacher mentor and parent mentor.