Some ultra-large machinery even requires a dozen or even dozens of mechanics to work together in collaboration.
A select few exceptional individuals will be chosen to join large warships, become part of the army, and be responsible for certain machinery components.
Mechanics of Level 4 to Level 6 can activate high-power but less stable reactors.
They stay within the warship, potentially becoming low-ranking officers, and excellence might lead them to pilot individual mecha for solo combat.
Their military rank is roughly equivalent to a junior officer.
As for Level 7 to Level 9 mechanics...
They are already the backbone of the combat sequence.
The Hunter Squad of the Second Sequence and the Heavenly Punishment Team of the First Sequence predominantly consist of mixed levels of these mechanics.
Further up...
Lie the domains of the Great Dao Golden Immortals.