H.J is from the UK and the first block mined includes the following text "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks" (headline of the Times : UK newspaper). Moreover, the written english used by Satoshi in his posts and writtings is said to have british structure/words. Heitler studied computer science in Yalle University from which he graduated in 1997 and has been working with code since then. He has a very entreprenarial profile.
There is a ton of people out there who can write British English & study computer science.
Besides, Satoshi's contribution and involvement in bitcoin seems to stop in mid-2010 and according to HJ's linkedin profile:
For someone who loves to be anonymous to the core, it's pretty weird to see that "Satoshi" explicitly told his involvement. I'm pretty sure he won't do that. So no, this guy is not Satoshi I believe.