Something my mom used to say. a German idiom which more or less means that we all rely on the same basics. It is meant to not let yourself be intimidated by others. Same thing others already said in the thread.
The senior dev may be a little quicker to get the ingredients together but in the end he is also just „cooking with water“ just like you.
Ps and I want to add one more thing: it is okay not to know something. We do not have to know everything. We need to know where to find stuff and how to get to a solution. But we have an internet full of knowledge to help us we do not need to know everything right this moment.

