Typically jobs like this take about three interviews. Initial, Technical, and one more follow up that might include future peers and direct managers. Are you being hired by the HR department on behalf of a dev group within the company? How come they did not fly you in for the interview?
Were you up front and honest about your skill set - sounds like you were. Also, some jobs actually pay well. If you have the potential, a good track record in school, all the things they are looking for, then you might actually have landed a well paying job. It does happen. There is a new hire at my workplace who is fresh out of school but she has all of the attributes that any IT/Dev group would want. This is her first job after school and I suspect she is making 60,000 to 70,000 a year to start. No joke.
I am just a lowly contractor for this company, so I make no where near that, but I watched the process as they hired a "new"
Java developer and she was the new hire and very deserving. But still, they have to get her up to speed on "Agile", "Git", "IntelliJ" and all the other tools they use to do their jobs. No one expected her to actually know any of this when she walked in the door. She is entry level and is being trained.
My only concern about your situation is lack of technical interviews. You don't want to show up and disappoint. I would still try to ask about that. That would be a flag to me.