Are you an attorney? Just curious.
Technically, no. I graduated from an accredited law school, with honors, in 1998 - Univ of Maine school of Law. I practice before the USPTO as a Patent Agent, and my "court" work is as an expert.
My first career was in engineering, I'm also a licensed engineer. Most of my work is aimed at making products "safer," or criticizing either products or users when an injury or death is a result.
Oh, I also teach course on how to be an Expert Witness, so have familiarity with rules of evidence that pertain to experts; the function of experts in trial; etc. Like when Mantei successfully precluded West from introducing an article into evidence while examining an expert in the Frye hearing, Mantei cited the wrong rule of evidence, and I "knew it without having to look it up."