I have supported my father in his indicators developing studies, developing for MT5 and TradeView, some indicator and experts robots to both demonstrate the better entrance moments or even execute orders.
Those are already more than 50 indicators. Where some of than have demonstrated very well behavior with market variations (volitivity).
MetaTrader 5 is a free and open platform, used worldwide, supported by the main exchanges.
TradeView is another trading platform worldwide adopted. Most of Crypto exchanges have it.
Those scripts are also available in Binance language (just like the TradeView).
The complexity of your indicator will define my real deliver time of your indicator. It´s always followed by some back tests, so the time to deliver will exceed, but not charged in the hours to develop. Your will have the compiled version to test during one week. The original code will be delivered with payment.