Tell me about yourself.
What they're testing: Whether you can sum up, in a minute or two, why you fit this job, without reciting your life story.
Show a strong answer to: Tell me about yourself.
Use present, past, future. Start with what you do now and one result, add the earlier experience that matters for this job, then say why this role is the next step. Keep it to a minute or two and end on the job you are applying for, not your hobbies.
I lead a support team of six at a software company, and last year we cut the average first reply from nine hours to four. Before that I spent three years in a bank branch, which is where I learnt to explain money to people who were worried about it. Over the past year I have written most of our help articles for the biggest complaints, and that is the part I enjoy most. This role would let me do that full time, for a product with a lot more customers, which is why I applied.