Create unit tests for ongoing webapp project

Hello, We are approaching a deadline for an ongoing project in the next 60 days (online small business loan application) and we need to bring on 1 additional support to help us meet our deadline. So, you would be working directly with our software architect / back-end designer + our react.js front-end developer. Your role will be to create a series of end-to-end continuously automated unit tests that ensure each little piece of our web application is functioning properly. The webapp works like this. A loan applicant clicks the "apply now" button and is taken to the application. They then go through 5 pages to tell us about themselves, their business, what loan they're looking for, etc. (I've attached the picture of our first page). We then take this information and make a series of API calls to pull their bank, personal credit, and business credit information. We take all of the API and applicant-given information to the lender that they've applied for a loan from. We're also setting up oAuth 2 login scripts, including with Google and LinkedIn, which sets us up for a future stage in this project. This is a great way to interview for an ongoing role with us in the future.