When you no longer feel you are learning or when the projects no longer stretch you with challenges. A stagnation of challenging projects can also indicate a g

When you no longer feel you are learning or when the projects no longer stretch you with challenges. A stagnation of challenging projects can also indicate a general stagnation in the company. That will eventually show up in business results. If see this, it makes sense to start looking around and joining a business that is more driven and aims high.