Looking for symfony exert

We have a legacy project written in Symfony and MongoDB that uses BACS to collect direct debit payments. The code is very dirty and it has several bugs that need to be fixed. It is crucial to be an extremely fast learner as you will need to learn BACS (https://www.bacs.co.uk/) and to feel comfortable fixing legacy chaotic code.

.Fixed the main bugs, the second phase of the project is to Dockerize it.