Sequences and separates aircraft in real time. No degree required.

Controllers hold a live three-dimensional picture of their sector and keep everything in it apart, moving and on time. Selection is demanding and training is paid; the qualification is a licence, not a degree.
Apply directly, pass aptitude testing, train on salary. Age limits apply in most countries.
Air traffic controllers · US Bureau of Labor Statistics, Occupational Outlook Handbook, May 2024 wages and 2024–34 projections.
The training washout rate is high and it happens after you have committed a year. Shift work covers the clock forever. The job is unbroken concentration in bursts, you cannot take a bad day home and you cannot take it into the next session either.