Mechanic
/məˈkænɪk/
Definition 1 of 2
Pro Tip 1/3Occupation Specific
Mechanic can indicate a person's job, especially associated with hands-on mechanical work. 
After studying, he became a licensed mechanic.
Pro Tip 2/3Not Just Cars
Though often associated with cars, mechanics can specialize in various types of machinery. 
She works as an elevator mechanic.
Pro Tip 3/3Practical Skills
The term implies practical, often manual skills, in repairing and maintaining machines. 
A good mechanic can often diagnose a problem just by listening.