Even with great time management, there are usually more problems and more solutions to explore, so it’s very likely that you’ll run out of time. If you’ve been tracking time yourself, pause ten minutes before the end of the interview to take a pulse check—what do the interviewers want to see next? Do they want you to proceed further, or is this a good place to stop?
If you are at a stopping point or if you’ve actually “completed” the whiteboard challenge with time to spare (congrats, a rare feat!) take a moment to summarize and mention how you might have approached the process differently. Balance this self-reflection with time for additional questions that you might want to ask your interviewers.
As an interviewer, I’m also reflecting on our time. Could we work well together? How well did you respond to my feedback? Was your approach different from mine? Can you help me overcome my gaps? Have I learned something new here?