Technician
Technician , noun
In computer software companies, individuals skilled at the details of using programs and employed to help customers to install or use software or troubleshoot software problems for are also called technicians.
a person trained or skilled in the technical details of a particular art or science, especially one skilled at operating, maintaining, or repairing equipment, in contrast to the theory or informational content of a craft; -- formerly also called a technicist.