I applied through a recruiter. The process took 1+ week. I interviewed at Pakistan Environmental Protection Agency (Karāchi) in Nov 2012
Interview
Post your documents when any job is advertised, wait for letter of written test or email, then written test will be held and informed through email and post. if you will clear the test then called for interview.
Interview questions [1]
Question 1
techniques of waste water treatment, air pollution control, waste water sampling.