I've usually worked at places where the job titles were all a bit vague. Certainly things like Senior tacked on the front haven't really meant anything (one place it meant you'd been there two years, regardless of anything else...)
I've been employed as a "Web Developer" and farmed out as a "Software Engineer/Analyst/Consultant" depending on who the client is.
But I've never had anything particularly unique. I do remember a friend working at a job where everyone was "Something Dude", like "Network Dude" or "Web Dude", back in the '90s. Wouldn't stand up these days, of course, and it was a bit naff at the time, but it made for a talking point when he got out his business cards.
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