If you take a look at the code on Github you quickly realize it's complete bullshit, a bit of hardcoded data [1] and one file of backend code that looks like it was copied from somewhere [2].
But he talks about an ongoing business relationship. He probably spend a lot of time that isn't obvious in the code (requirements, interface design, software design etc.), but we can only see code that anyone could have coded within one hour. That's substantially less than what I would have expected from the article.
[1] https://github.com/tdrach/Sciview/blob/master/public/javascr...
[2] https://github.com/tdrach/Sciview/blob/master/routes/api/v1/...