I just read the book. He was the head programmer and had a team back in the states. He had a falling out with hammond about a budget overrun which he had to absorb the cost, which is why he wanted to get back at him and make some money by stealing the embryos.
The book really outlines the shortsightedness of capital and it's all still relevant. They really get into the park's construction and design decisions. Honestly I wished the movie was done by Kubrick instead of Spielberg where it features all of the cost cutting and incompetence which convinced you that the park was doomed to fail, and then it fails.
I think my favorite part of the book was when the rival company wanted to steal InGen's work but needed board approval so they do this song and dance to get board approval to do it in a way that doesn't open them up to liability. It's like what happened with the PG&E fires a few years ago, where nobody on the board or executive team got in any trouble because they did neglect in this special way that allows them to get a get-out-of-jail-free card.
encapsulation of "corporate solutions" colliding face first into reality.