Nit jamshedpur is good option. Some of the mass recruiters like TCS, Infy, Wipro, etc will allow all the M.Tech grads irrespective of the branches. Finally, Some universities will also visit the campus especially to recruit M.Tech grads for the faculty position with a decent salary. So, the bottom line is that NITs do have good placements for M.Tech,

Feel free to comment if you have any doubt

Good luck