How do You Advance to Senior CRA?

I was recently conducting a coaching session when someone asked what skills or experiences she needed to advance into a Senior CRA role. It seems like a simple question but the answer can be quite complex. Should you focus on gaining foundational experience? And if so, what clinical research foundational experience is most important? Does your job tenure matter? Should you have a bachelor’s, master’s, or doctorate? And if yes, what field should your degree be in? What, if any, certific...