There were just 2 rounds:
1. by the team leader
2. Managerial round
GT is basically a contractual position of 6 months and depending on their need, requirement and candidates performance, they might extend the contract and at a later stage if headcounts are available they might even confirm you.
They did not ask me too many technical questions. Most of the questions were from my resume. and rest was process related. For eg.: what is cash recon., why is it required, if balances match are we still required to do cash recon. and there were questions on mutual fund like, what is NAV and its calculation, what is the asset for a Mutual fund.. these questions were asked by the team leader
the Managerial round was almost a formality.