Any career longer than about five years that has a focus on a single technology or language with no attempt to branch out or learn new things. Especially for th

Any career longer than about five years that has a focus on a single technology or language with no attempt to branch out or learn new things. Especially for those without a comp sci degree. For example, if your resume says you're a "SharePoint developer" or "Java expert" it's automatically suspect. I've worked with too many people who only know a single thing and are trying to ride that train as far as they can. Those people have a great first three months if the job is for their exact skill set. But anyone more well-rounded will run circles around them after that.