All new hires will back fill people wanting out of their current prison or be sent to where no one wants to go. Looking at the transfer list from HRD, most will be sent to Walpole, Concord and may be Shirley MED and SBCC. If you're a female, plan on going to Framingham. Forget about going to any Min or pre-release. There are a lot of prisons in desperate need of bodies.
Transfers will have first choice, new hires second. Looking at the list that wants out of Walpole, plan on going there. It is a shit hole, hence why many want out. But it's a good place to start and learn the job, find out whether you like it or not.
Forget about anything on the Bridgewater complex. As JGH7223 said, with the closing of the SECC prison, about 450 officers got sent all around that area and away who want back.
My opinion, worst places to go: 1- Walpole. 2- Framingham. 3- SBCC.
Best places to be at: anywhere other then above!
Good luck to all.