I do digital marketing for clients. There’s a large number of activities that can be made more efficient, quicker, cheaper, or better using code.
For example taking a large number of text documents and turning them into video outlines with illustrations using OpenAI APIs and a quick and dirty Django app to organise everything.
Or connecting up various marketing APIs using Python instead of Zapier - a lot of companies spend thousands of dollars on Zapier each month when a script would literally cost a dollar to run.
I'm taking computational biology courses on the side, so that's the application that comes to mind for me.