Engineering Scope

A desktop engineer is responsible for the hardware and operating systems to support business functions. They may or may not support the applications like databases, web services etc.
The network engineer is responsible for the infrastructure that ties all of the systems engineers computers together.
With 'the cloud' terms like cloud architecture and dev ops engineering seem to blur these lines a lot.

Yes, companies do come for PGPM with operations role. Kindly check the following link - https://www.greatlakes.edu.in/pgpm/placement-snapshot

Environmental engineering has immense scope in India for professionals who are qualified in chemical, biological, thermal, radioactive or even mechanical engineering as environmental engineering is a diverse field and requires people from diverse background. Moreover, professionals from process engineering, environmental chemistry, water and sewage treatment, waste reduction management, pollution prevention, etc. are required in large numbers.