Yes. You can transfer within departments. It is a large business so there are personality issues at time. If you do your job well, then you should be ok. It is unionized so if you have issues you can get assistance from your rep.
There is absolutely no growth potential for anyone below management; they hire you to do a job, but they don't hire you as a career employee.
There is a lot of room for growth and it is supported.
Help job seekers learn about the company by being objective and to the point.
Your answer will be posted publicly. Please don't submit any personal information.