Yes and no. Yes in strategy development. For example, I wish I could fully automate my day trading strategy because it has come the stage of fully mechanical. However, I can't because have to learn about coding and I am paranoid of the code being stolen from the platform owner. The next best option is share with few people who can backtest together to speed up. I got so many ideas to test. No in execution.
Yes. obviously you can do it yourself. But there’s a reason hedge fund pods consist of more than 1 person and often as many as 10 people.
trading SP futures options, OEX, SPX as a common book required a team back in the day. Probably similar setups still do