I'm the only tech guy in the founders group and I don't know the other co-founders very long (maybe half a year now).

So, my daily work now consists of developing, meeting with the other co-founders and... let's call it "administrative work". I hope, people will know what I mean with that - answering questions from customers, explaining to co-founders why feature XYZ, what he just had as an idea will not work etc. And then there are a lot of ongoing changes in the initial requirements (I know - thats normal), that are taking some time to thing about, adapt the initial architecture to that and so on.

I made some cost estimation for the product development and there are so many things left to do that I estimated the whole product to be ready at the end of the year (so that's around 10 month left) and I now have to explain to the others why it takes so long, how to accelerate it (my answer "hire additional people" - their answer "no budget yet" ;-)). Not the big problem yet, because I already created a working prototype (or should I call it MVP?), but that was created by me in a few weeks as a side project, but now it's really hard to explain, why the complete rework with all the feature changes will affect in a longer development time.

So, what should I do with that problem - having much administrative and planning work to do on the one hand and having a bunch of things to get developed on the other hand? All the business guys are heavily focused on sales, sales, sales - but I always told them: The development team has to scale with the sales!