Sure there's some of it, but not in my group and it's not something I'd be tasked with hiring for. Occasionally there's some infrastructure related task but I'd prefer someone on the team who actually has to use that stuff be the one to work on it.

We don't have a lot of glue code because we don't glue things together. We write the things other people glue together. That's why this is fundamentally different than 90% of anything I've ever done.

I also don't mean to say that all FANG work is like this. I could see some roles at, say, Google working on Android where it very much would be the kind of gluey work I've done before.