This place is having a mentally abusive culture. It is incredible how such a small start-up with such a young and progressive team can create such an environment. The egoistic childish behaviour, the shaming, bullying and gaslighting is so toxic that the only solution is to quit. There is nothing measured on meritocracy, but only friendships and parties. The opinion of top management is biased, so if you are part of the friends circle or you are crawling to them , you go ahead in your career.
On another contrast, workstreams are not collaborating and everyone is looking after their own goals by using all means possible. Tasks can be interesting and company can grow significantly if the above changes. For now there is no such outlook.
Career development is missing and most of the positions are significantly underpaid compared to the market. Last but not least, you are expected to work 24/7 without any bonuses or recognition as the company is striving to get into the 2nd round of investment and if they don't then that is just the end of it.
I personally did not learn much after I joined, but if it is your first job, you can learn a lot (be mindful on what expense).