Retired Mechanical Engineer with over 37 years teaches high tech advanced English

Native English speaker with a 4 year US college degree and 37 years of post college engineering experience can teach high tech English conversation. I speak a little bit of German and a little Japanese, so I know first hand how difficult it can be learning a new language. I can also teach beginning STEM classes as well as 3D CAD, 3D printing, basic machining and programing microcontrollers.