Don’t ever introduce yourself by your job title. Job titles are terrible and should be scrapped. Unless they’re really literal. There is only one thing worse than someone who introduces themselves by their title – and that’s someone who introduces themself with an obtuse and confusing buzzy weasleword description that requires a follow up question.
First impressions are important. Especially if you’re a conference speaker, or somebody it is important for the people meeting you to know. Don’t start a conversation with an obtuse statement unless it’s a joke that you explain straight away, and even then… don’t do it.
It was refreshing listening to the guest speaker at our camp over the weekend introduce himself and speak passionately about his new role – “campus evangelist” – by itself this would be buzzwordy and unclear – but he told us what it looked like and spoke with genuine passion about the task. This was cool. If you must use your title do it properly.