Terrible experience - Recruiter Atrium Employee Review

I strongly would advise against considering Atrium as a place of employment to anyone. I had an exceptionally terrible experience as an internal employee during my time here. Unfortunately, I wasn't able to see the severity of the situation I found myself in at the time due to naivety, lack of professional experience and the gaslighting I experienced at the hand of management. Without going into too much detail; while an employee at Atrium I witnessed multiple forms of misconduct. When I escalated this scary situation to my manager and their manager who were turning a blind eye to it all - I was told to not report this to HR and if I repeated it to anyone, I would lose my job. Besides the extremely questionable ethics; Atrium really does not offer much as a place of employment. Internal mobility is made really difficult, no annual performance reviews, below market salaries, no work life balance or flexibility, aggressive and cliquey management, lack of accountability in Leadership, lack of Leadership training and an absent CEO.