The interviewer i was assigned was very good and was soon to be manager. Being interviewed by an "employee" is great because you get a feel for what the position will be like.
Not abusing their employees, treat them like human beings, remember that they have a life outside of work. Don't get mad at them if they need to lesve work at 8 pm to go eat dinner.
People in lower positions are generally extermly welcoming, i would say its one lf the only good things about this company. However you will have no time to do things outside of work ith them since all you have time for is work.