The CEO (with management, if you can call 2 people a management) is very unprofessional and does not value employees at all. The CEO is micromanaging the work of everyone he can, and makes those employees unproductive in that way. Everyone who works there is afraid to go home after 8 working hours (not including the lunch break), so they would not be fired, and everyone seems to be working a lot of overtime without any compensation (every day from 9:00 until at least 18:30-19:00). Company is burning people extremely fast, and everyone seems to be underpaid and overloaded. Company calls itself a "startup", although they exist for more than 6 years, only so that people could be paid as little as possible under that excuse. Business side of the company does not really exist, and sales "department" (one guy) is not creating any profit, so the future is bleak. There is no strategy at all for everything that the company is doing, so nobody except for the CEO understands what and when is going to happen. A lot of people who are coming to work in the company for the short period of time are pushed by the "management" to give a good rating here, while still in trial period, so you should take all these positive ratings here with caution, because nobody will give lesser rating if they are expecting to get a job. Office is practically one bigger room without any aircon where approximately 15 people should work, and the office was never really cleaned. Company is also offering "accomodation" that is drastically below any standard in Germany, but as an employee you will not have to pay too much. At least until they decide to kick you out because there is some other worker from far away country coming for unpaid trial.
Small advice for those who decide to try anyway: don't be tricked to spend your free time during the trial period with "management", but with other people in the company, and ask them if all this here is true.