Mainframe developer, final bachelor's degree, is it worth it to go like a first job?

Question

Cobol

I study abroad, I need to do an internship; sent a CV to Accenture after which I went through many tests and an interview, at the end everything went well and I was offered a position - a junior Mainframe programmer. They said that they would teach me everything from scratch within six months - IBM Mainframe (z / OS, Cobol, JCL, DB2).
Actually, this will be my first job in the company, before that I did the Rest API project (Java, JS, Spring boot, MongoDB) for free under the guidance of the company using the SCRUM (Agile) methodology and was more focused on Java, in general, business projects.
The question is whether it is worth taking such a job or is it better to look for other options (I, as a student, liked the fact that they would pay much more than the average pay for students in the city)?
It’s hard to decide on your own, because you need to complete an internship, and the competition for the position of a Java programmer in a good company is very big ..

Answer 1

Any job will bring experience.
The experience goes not only directly to the programming language, but also to business organization, infrastructure organization, development organization and the use of related technologies.
If you don’t like the job, you can change it, the main thing is to check that the contract does not indicate that it is at least 5 years;)

Answer 2

Like it - go, don't like it - don't go. And the salary of specialists in any field is good.

Answer 3

ibm good