Expert knowledge and experience in engineering troubleshooting and process optimization in Photolithography or Metrology process recipe are preferred, such as Nikon scanners, TEL tracks, Hitachi CDSEM, KLA Archer OVL, Electrical /Optical tester, Thermawave Optiprobe, Rudolph Firefly or KLA defect scanner, Stylus Profilometer, Microscope, Sorter, EVG/SVG litho tools