Quality Control Engineer
CNC milling machines are the heart of the manufacturing industry. Few people have ever seen or heard of them, and yet they produce more than $100Bn worth of components every year, serving every manufacturing vertical. CNC milling machine in action: https://youtu.be/RGSxTNjBvro
Despite this, the software that is used to control them remains in the dark ages, requiring hours to days of manual instruction by a highly skilled machinist before a component can be produced.