I think it's very possible to see something about Engineers in this film. Ok, let's look at the evidence:
A Juggernaut (It might even be the Derelict)
Although the character is rather small, this humanoid is present in one of the concept art in the instagram.
And finally, the Xeno Esque biomechanical suit. Ok, this might be man made (perhaps through reverse engineering). But then, in the same concept art seems to be written: Pilot Mask - Space Jockey.
So it is quite possible that in some way the suit is related to the technology of the Engineers.
Quote from: Nightmare Asylum on Feb 22, 2015, 02:24:43 AM
They could get away with keeping the Jockey shape from the original if they leave us with the impression that the black goo or some other Engineer biological meddling made him the way he is. If the Engineer flight suit in Prometheus is indeed biomechanical, it would be easy to buy into the suit literally fusing with the body of an Engineer (and perhaps the ship as well, which in and of itself was much more biological than Prometheus' Juggernaut) in order to create the being that we saw in Alien. Perhaps the Jockey and the chair are indeed one in the same, the result of genetic meddling farther beyond what was explored in Prometheus.
Only paraphrase a theory that i found on another website:
Here is a dead Cactus...
And here is one alive...
This shows how Organic Material can wither over time, so why cant a Bio-Tech Organic suit do the same?
But otherwise I agree, maybe the black goo has something to do with the organic aspect of the original Space Jockey (besides the aspect of the spacecraft, since he seems to be fused with the machine). It might even be some kind of mutation, who knows.