Hi Candidate,

First let's talk about TCS- TCS stands for Tata Consultancy Services which is a IT Firm under the Tata group of companies. Wipro is a global information technology, consulting firm which operates in Computer and IT firms.

The structure  in the IT  department starts from the designation from junior level range like this Assistant System Engineer, IT analyst, Assistant Consultant, Associate Consultant, followed up by the General Manager, Managing director, and preceded by the Chief Operating Officer.

Hope that this answer helps you.