I think most exchanges will let you do that (kraken and bitfinex do at least). Won't help any w/this volatility though. I bought a program (leonardo) that's got bot strategies you can use as well as a trailing stop loss feature. It was around 80$ in bitcoin about 6 months ago so figure double that now.
Try PTMC platform. We support Poloniex exchange https://protrader.org/blog/how-to-connect-to-poloniex-via-ptmc