Thank you for reading... The requirement for delving into backend are numerious, but the key one to note are understanding of the backend language of your choice, understanding how api works especially if you would be going into microservices applications,Databases(relational/non-relational database) and also knowledge about CRUD(create-read-update-delete) logic ...The knowlege of this is enough to help you in delving into backend not ignoring the fact of having a mentor/guidance that can help you learn rightly and fastly