Never trust a programmer who says they know C++
I've been saying this about hardware engineers since forever. If a hardware engineer tells you they're a good software engineer they're going to be a problem. I guess one day I'll find a unicorn, but practically always it's massive red flag. It just begs the question in which way are they flawed: Do they write shit software and think it's great? Do they have so little experience that they think that software is simple? Do they just disregard everyone else's skillset? Do they fundamentally not understand their own limits? What is it that leads them to make such an utterly silly claim?