My first professional experience was with Halo.rent which was a start-up web platform to ease the peocess of letting a residance in the UK. I was a strictly front end developer there working with React, Typescript, graphQL.
The application mostly consisted of a portal to upload information about rental units and managing tenant applications and communications along each step.
The main complexity of it was to handle all of the different states that the application could be in, handle the communication between the applicant and the manager, and to handle many huge forms to fill out the details of the application and the rental unit.
I also built and maintained the company landing page using Webflow (Sadly not much publicly remains of the proyect as it was bought and absorbed by GoodLord)
And also by the tail end of my time at the company I got to work on a mini project building a chat app where I got to learn React Native and some mobile development.