He is a professor in Mathematics, and is often invited in popular TV shows as a supposed "expert" on elections, software, and politics in general.
Well, at least the TV shows invite mathematicians, that's not a bad start.
All Bulgarian TV shows invite the same bunch of around 50 self-proclaimed experts (supposed historians, economists, national security experts, sociologists). These people spread tons of lies and misconceptions to the wider public which is generally badly informed and uncaring. Mixing in a little bit of obvious truth with the rest of the garbage makes them look like a credible authority.