If my understanding of the Snowden timeline is correct, he was in contact with Greenwald/Poitras before he started work at Booz Allen Hamilton. Is this correct?

If so, then he is in no way, shape, or fucking form a hero. He took the job with the intent of stealing documents, meaning he had no idea what information he was going to come across. He didn’t leak because what he found shocked him; he was planning to leak before any such shock was possible. He took the job with the sole intent of stealing documents. He is a spy and, for giving that information to other governments, a traitor.