I got hired on as a full time driver right before peak a few years back Everyone on this forum swore it was temporary/seasonal. I'm still here and have 13 drivers under me now on the seniority list. You could be full time as ups is hiring for Saturday drivers now especially in my building.
I came from express as a swing driver for 9 years. So my route knowledge was vast. I came in covering pretty much every route in the building besides the mall and military base routes. I guess you can say I never had a regular 30 day probationary period as I trained on one route for 3 days and then covered numerous routes my second week in.
I did no gain any seniority during November and December so none of those days counted towards my 30. I've worked everyday since I was hired with the exception of using option days.
If HR says it's full time, just make sure you offer states this. Also, intergrad is a stress test, easy to pass, but also easy to fail so if you quit FedEx and fail intergrad, well good luck going back to FedEx....