Mario Rui Chaves Da Costa

MQL5/MQL4 developer and independent strategy reviewer.

Bought or built an EA that looked great in backtest but you're not sure it's real? Before you risk money, I stress-test it for what backtests hide — real costs, overfitting, and out-of-sample robustness — and give you a straight verdict: holds up, breaks down, or inconclusive. No signals, no hype, no profit promises — just an engineer's honest second opinion that can save you from a costly mistake. Send me your backtest report + rules and know exactly where you stand.

I also build what you need: custom EAs and indicators from a clear specification, fixing EAs that don't behave as expected, risk management (SL/TP, position sizing, max exposure), and MT4 to MT5 conversion. Same rule applies — if your backtest is lying to you, I tell you before I hand over the code.

What I don't do: promise returns, tune a strategy until the backtest looks good, decompile somebody else's protected EA, work around a broker's terms of service, or manage anyone's account.

Based in Switzerland · EN/PT

Gráficos e ideias