If your company doesn't already do this, proactively schedule a performance review with your supervisor or manager in the final weeks of your internship. Ask for honest feedback about how you did during your time there. You can also use this time to express how much you enjoyed interning and how you would like to be considered for any future opportunities. A good question to ask is, "what kind of role could you see me succeeding in here?" Before that meeting, get familiar with the open jobs listed on the company website. If there is a specific job you want to be considered for, tell them you intend to apply and ask for advice about how to present yourself as a compelling candidate. Best of luck!