CNC (Computer Numerical Control) field service engineers are experts in using CNC machines. In this role, you install, diagnose, and repair these machines while creating technical reports of all your work. Most days, you travel to the job site, read the blueprints, install new CNC mchines according to specifications, and test them to ensure they are working properly. You may also service established machines, troubleshooting issues, and making adjustments or necessary repairs to get them running to optimal capacity for your clients. When you install new product lines, you must also train customer service engineers on how to operate them.