I excellent in Java Springboot 2 I can help you to solve your problem
I experience to implementation redis as cache to bring Api service more fast and reusable
I know about microservice architecture that can make ur backend ecosystem more fleksibility, reusable, and scalable
I am experience develop web or android app with ionic ( react or angular)
I also known about html5, nodeJS and css
Let me know about your requirement that what u needed so I can help u to build it