Oil exploration is an engineering career.
Oil exploration engineer is an engineering career. It starts with the letter o.
Industrial Engineering
Quality control is an engineering career that starts with a q.
quality engineering
Locomotive Engineering
First of all you isn't a letter, it is a word. If you mean the the letter u than an engineering job that starts with that is "Urban Engineering"
Quantum engineer
Do you mean what Norse god starts with o? Odin is a Norse go that starts with O.
Geological Engineer is an engineering career.
Janitorial
Janitorial
engineering