Company growth can affect what is considered a "normal" workday: With growth, there are more and more things to do. This will sometimes manifest as staying late, coming in early or working on the weekends. It is a part of the job that is to be expected, especially if you have your own experiments to run or meetings with individuals from other locations. Not everyone will fit into the company: The environment is very fast paced at times and each person has multiple responsibilities. This is not a rest and vest workplace and might not be a good fit for someone who isn't adaptable or accustomed to working efficiently. Supervisors and managers are expected to jump in and help when needed, no one is exempt from doing grunt work. Company structure is still on small company/start-up scale: There are some things that need to be properly defined now that we are larger. Many things we did worked well as a small company but are not scalable as we grow. This will take time to properly implement so I am hopeful that something is in the works already.