Take a look at some interesting approaches used at some big companies
I love this:
Overall, engineers are treated as creative collaborators in the overall process with design and product, and products are worked out and iterated on with engineers instead of simply being handed to them for implementation. Rob (our founder and head of product) likes working with engineers and the engineers spend a lot of time interacting with Rob. Our ability to work this way has as much to do with the personalities of the people involved and the culture as the technologies involved. We’re always learning and adjusting and we’ll continue to evolve as time goes on.