Yes Exactly u need attestation. As i have also gone through the same process as i also have applied for the engineer visa. I have done through a guy who did my attestation for Qr 1500.00 in 10 days. He quoted me a time of 15 days but got it my certificate attested in just 10 days. Very genuine guy u can get it done from him. call him on 33817463.(Majid)