Hiring model is to exploit young, inexperienced people - Frac Engineer ProPetro Services Employee Review

Long, ridiculous hours. I worked 100+ hours a week, and wasn't paid overtime due to being a salaried employee. I barely knew my manager. A lot of the people are very irritable and unpleasant due to getting 3-4 hours of sleep a night. The "engineering" position was just data entry and manual labor. The company is also very disorganized and tells you where you need to be less than 24 hours in advance.