This Quant Hedge fund is run on Deephaven, which is some sort of fancy database. The core version of this is available on GitHub with Java source code. See the interview here
Make sure to get some FREE trading PDFs https://quantlabs.net/books
It was sent to me from a close trusted Telegram contact so thanks to him for sending this.
NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!