I don't know. I feel like that was more a thing 10 years ago. Now all the big players have the ability to use algos, read public sentiment via Twitter, etc. Maybe if someone has a novel strategy that can work (patent and sell it is where the real money is), but for the most part the tecnofinancial arms race has gone to the big players leaving us little guys out gunned.
I had a small engagement with someone in this area last year. He essentially provides consulting on ML based trading. One man band, $200-300K annually. Not quite sure who the end clients were thought..
I mean, he's just an AI/ML consultant. Is he also the one coming up the financial logic? At this point it's basically Finance PhDs coming up with the ideas and then the AI consultants are building the system. If he was coming up with the ideas, then $300k is extremely underpaid.