It can be a hostile environment sometimes, with the owner. Quality work is expected, but the owner will be extremely rude and hostile with you over the most minuscule things (such as a hyphen in a file name or he doesn't like a font you're using). There is a high turnover rate (from both a number of people being let go after hired or quitting) which is not a good sign.
There seems to be a lack of communication in their process as well. The owners are the ones present at meetings and in contact with clients yet they don't seem to know what's going on at times and get mad at the designers if they're not sure what's going on either. They have a good process in terms of researching concepts, but they will also copy a lot of work/inspiration they find on the internet and do not seem to have great integrity as designers.
Overall the hostile environment from the owners, poor work culture, and lack of work/life balance does not make UpShift an enjoyable place to work.