Is it possible to mix Gitlab and Jenkins jobs?

Is it possible to mix Gitlab and Jenkins jobs? I’ve seen that Jenkins jobs are run in an external stage but I’d like to use Jenkins jobs as part of my own stages. Something like this:

Yes. I have tried this with Jenkins on an EC2 and it worked well. I watched some YouTube videos and got it up fairly quickly.

do you have any code I can check? I managed it by making calls to the jenkins API/build endpoint

No code to share, unfortunately, but I think I referened this video. CloudBees are great: