[Avi-D-coder]

As someone who has worked on haskell professionally, it's probably the easiest language to interview in/for. It's really easy to see how deep a dev has gone down the haskell rabbit hole. Forget a certificate, just talk for 5 minutes.

Any dev who has fully gone down the haskell rabbit hole can definitely grok any other paradigm. The challenge isn't technical skills with devs like this.