I wanted to know co-op opportunities in engineering after first year as well as in final years?
What are some sample co-op positions?

After 1st year it's very very little, but after it grows exponentially, with golden spot being between 3rd and 4th year. While the opportunity is there, the competition is killer, and those who get co-op know they are lucky, so they try to milk it for as long as possible.

I'll say, there's more coop opportunity than for new grads.