JunctionApp VS react-redux-realworld-example-app

Here's a JS project I used to work on. It's certainly not perfect, looking at it now there is plenty of stuff I would improve, but it gives a pretty good example of at least some things that are basic "best practices", in my opinion:

You have a working backend, but it is not very interesting without a frontend. Let's go ahead and install a React + Redux frontend that will serve as a UI:

This is the React + Redux frontend project, and for Spring Boot I'm not sure what your prospective company uses to interfact with the Database, but it's normally JPA, therefore this Spring Boot + JPA project is a good start.

Since you mentioned you want Redux: I found this sometime back: https://github.com/gothinkster/react-redux-realworld-example-app

Did you use create react app to build your app? It take a lot of the pain away from learning as there are a lot of sane defaults configured in. If you specify Typescript (an option for create react app) it’s a lot closer to Java than vanilla JS, also helps you write clearer, more typesafe code. Perhaps look at some existing smaller projects using React, there are some good real world examples for a heap of languages on gothinkster including react, but that might be overwhelming with redux as well which is a whole other part of a UI app.

However although their React+Redux example is perhaps the most popular one, it's not currently maintained. Instead, this maintained fork is recommended on their list. It's not in TypeScript, which today's projects should normally use, but I guess it's OK for beginner to study