Develop Ninjatrader 8 Trading Strategy Based On Indicators Without Source Code

I am looking for an experienced developer to create a trading strategy for Ninjatrader 8. The strategy should be based on a set of indicators, although these indicators do not have source code available… (Budget: $250 – $750 USD, Jobs: Backtesting, C Programming, C++ Programming, Financial Markets, Market Analysis, Metatrader, NinjaTrader, Portfolio Management, Risk Management, Software Architecture)