John, only mention your career if it’s relevant to what you’ve written. For instance, if the novel is about a restaurant, and you’re a chef, or if you’re an MP writing political thrillers, then that gives the details in the story more credence.
Otherwise, what they want to know is your publishing history and/or aspirations. They want to know that you have more than one novel in you. And they want to hear that you are flexible and willing to take advice and do rewrites… but do try to resist the temptation to beg and grovel… they’ve seen it all before… from me!
xx