First off, I can only speak for the supply chain department as this is where I worked.
I only lasted 3 months and it seemed like someone was always being reassigned and it seemed like someone quit every week on average. I know both of these things are a part of business but it was definitely more than average at Marvin, much more.
It was an environment where people were nervous everyday. Blame was passed around quite a bit as everyone felt like they had to cover their own back.
Internally it was unorganized and there was so much unnecessary panic. Material would be lost, and stock levels were often wrong. There would be emails sent out with 20 people in CC for super urgently material only to find out we had plenty in stock. On one occasion because no one read a cert properly they were prepared to stop production 5WKS because they thought a batch of paint was expired.
The major red flag came 2 months in when my manager and his boss left on the same day, both because "the commute was too much". Nobody believed a Sr. Manager and Director left on the same day for the same reason. Nobody.
After my third month my new manager sent me an email to go to HR where I was notified of my termination due to "poor performance". As I had very good numbers (they charted our performance and posted the numbers openly with our names attached as it "created competition"), several positive remarks (from more than one manager), and no notice of poor performance from my manager, HR immediately sent me home with pay to investigate.
I never once received a formal or informal (verbal/written) notice that my performance was poor, or what I needed to do to improve, or that my job was at risk.
No decent manager simply sits back and lets you perform poorly without trying to help you improve for your sake and for the company. It was clearly not the real reason.
I left my previous company after 6 years, and several promotions. I relocated and wasn't even given a real chance to succeed. Worst decision I have made in my career. Stay away from this company. I could go on more about this but at this point I need to let it go and move on. You've been warned.
