How should I build a good relationship with the staffing manager?

First, try to approach the staffing manager as a person. Yes, they are there to help, but they get “used” far too often. When you see them in the kitchen, or the hallway, be genuinely friendly. Get to know them and build that relationship.Additionally, network within the firm. Project Leads, Principals, etc. will ask for you if you have a strong reputation and if you know them. This takes time.Don't expect to get everything you want in day one. The fact of the matter is your are going to initially get staffed on whatever project they feel like staffing on.Everything after your first project is in your control (really, in your influence).Good luck!