I started at Pega as a Contract Sourcer and think it's a great model to learn the business, while getting your feet wet in Corporate Recruiting. The model is metrics-based and transparent, and the nice part is, Contractors work on-site and get to feel like a part of the team.
Most of the team has an Agency background, which I think helps prepare - more ... for the fast-paced environment.
All of the management team started in the same Contracto Sourcing role so there is a ton of room for growth. - less