If you find yourself doing maintenance work, move on. There is nothing wrong with maintenance work, it is valuable and gives the company the ability to service

If you find yourself doing maintenance work, move on. There is nothing wrong with maintenance work, it is valuable and gives the company the ability to service its clients. However, if you are no longer able to improve the process and that is what you were doing before, move along. Maintenance work is a big signal, don't ignore it.