In many of
Isaac Asimov's books, a roboticist is someone who designs
robots. Two roboticists who were
important
characters in the book "
Robots And Empire" were Amadiro and Mandamus.
In the short story "The Bicentennial Man", Andrew Martin contrasts a roboticist with a robopsychologist, who works with positronic brains, and a robobiologist, who works with organic robot bodies.