The Internet Archive Radio Programs Collection. Type a keyword search for jobs then browse your results for relevant shows. (I used jobs rather than careers because the Internet Archive uses jobs as a Subject term.)
NPR (National Public Radio) career programs (sort through these)
PBS career videos (sort through these)
Remember to always evaluate what you find on the Internet, even if it's a website a librarian suggests!
There are useful resources on the web. Choose your search tool thoughtfully and use strategies: specific keywords, quotes, asterisks, domain limiters (edu, gov, org). Evaluate what you find - see the box below.