This branch of engineering uses principles of soil mechanics and rock mechanics to investigate and study subsurface materials and conditions. 

Government and private sector job opportunities are available in front of geotechnical engineers. Self employment opportunities are also available in front of graduates. Firms involved in construction of commercial buildings, public structures and other manmade structures are the prime recruiters.

PWD, Municipal Corporations, Urban planning departments, Government Port Trusts, ONGC, NHAI, Indian Railways, Metro Rail Corporations etc are some of the well known Government sector recruiters.

If your interest lies in the above then go ahead!!

Hope this helps.