As far as specific house jobs probably checking the Duke website is the only way, if a company is going to hire externally like that it should be right up on the website. You could sign up for Indeed, they always send recommended jobs to my email so Indeed might find it for you. But it is relatively easy to find job if you know exactly where you want to work and what job. Usually you can go to a company's website (like Duke) and sign up and have your resume on file within their hiring database, so if a job that comes up and fits your resume you could get an email. Maybe someone here who is with Duke could give you more specific info.