Authentication for Ionic application

Hi, As a full stack developer I'm using Angular with Angular Material for building the front end and Java with Spring for the back end. I'm able to build cross platform, hybrid app using Ionic Framework and Angular. I've good knowledge in core Java, object oriented programming in Java, Java development. I'm able to support you using my knowledge on Ionic Framework, Angular, Spring Boot, Spring MVC, REST services, reactive programming, Spring Cloud and Microservices. Please visit "[login to view URL]" for the complete website which I developed using Angular 9 with Angular Material and Java with Spring Boot. Please inbox me so we can discuss more about this project to start soon. Thanks.

This is can easy be done by firebase. Iam android and web developer with alot of experince. I can delever this in 2days.