that was the worst interview process I ever seen.. after traditional phone call and usual on site interview they will give you a task that will last 5 days.. and believe it or not it will take you 5 days to finish it.. long painful task with non trivial problem to solve . then with no reason they will give you rude short email that we can't give you proper feedback but well .. on the other had the company itself was having a great potential in terms of work environment and fresh ideas but as any good thing this days .. it's now a cost center for Daimler.. so you will work for your salary forever .. no potential for making the business and yourself bigger. and I can tell they as small entity will be merged into another Mercedes company soon or be vanished when they discovered they don't give the value it promised .