Backend tasks

Refactored a backend
Wrote unit tests

This last two weeks I worked in some backend tasks.


It's my first time with backend stories but I appreciate a lot the confidence the team has in me. I did some SQL changes, removed some unnecessary joins and also improving the performance of an endpoint removing completely the need of an extra query.


Also did some unit tests using Mockito (funny name), and I hope to learn more of this workflow.I don't like Java a lot, but it's great to expand my horizons.