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I need a professional MQL4/MQL5 developer to build a custom hybrid scalping Expert Advisor for EURUSD M5, with aggressive but controlled risk, using fixed TP/SL, no martingale, no grid, and a hybrid entry engine (price action + indicators). The EA must be delivered in both MT4 (MQL4) and MT5 (MQL5) versions, with identical logic.
1. Platform & symbol
- MT4 (MQL4) and MT5 (MQL5)
- Symbol: EURUSD
- Timeframe: M5
- EA must work on ECN accounts (5-digit broker)
2. Strategy type
- Hybrid scalping EA
- Two modes:
- Momentum mode (trend scalping)
- Reversal mode (range scalping)
- Mode is selected automatically based on market conditions
3. External inputs
General:
- MagicNumber (int)
- Comment (string)
- EnableLongs (bool)
- EnableShorts (bool)
Risk:
- RiskMode (enum: FixedLot, RiskPercent)
- FixedLotSize (double, default: 0.02)
- RiskPerTradePercent (double, default: 2.0)
- MaxOpenTrades (int, default: 2)
- MaxDailyLossPercent (double, default: 5.0)
- MaxWeeklyDrawdownPercent (double, default: 12.0)
TP/SL:
- TP_Pips_Momentum (double, default: 3.0)
- SL_Pips_Momentum (double, default: 2.5)
- TP_Pips_Reversal (double, default: 2.0)
- SL_Pips_Reversal (double, default: 2.5)
Session filter:
- UseSessionFilter (bool, default: true)
- LondonSessionStart (time)
- LondonSessionEnd (time)
- NYSessionStart (time)
- NYSessionEnd (time)
Spread & slippage:
- MaxSpreadPoints (int, default: 10) // 1.0 pip on 5-digit
- MaxSlippagePoints (int, default: 5)
News filter (optional):
- UseNewsFilter (bool, default: true)
- NewsPauseMinutesBefore (int, default: 5)
- NewsPauseMinutesAfter (int, default: 5)
Indicators / market condition:
- EMAPeriod (int, default: 20)
- ATRPeriod (int, default: 14)
- ATRTrendThreshold (double, default: 0.0008)
- RSIPeriod (int, default: 7 or 9)
- RSIOverbought (int, default: 70)
- RSIOversold (int, default: 30)
Trade frequency:
- MaxTradesPerHour (int, default: 6)
- MinMinutesBetweenTrades (int, default: 3)
4. Indicator definitions
EMA:
- EMA = iMA(Symbol, M5, EMAPeriod, 0, MODE_EMA, PRICE_CLOSE, 0)
EMA slope:
- EMA_slope = (EMA[0] − EMA[N]) / N
- N = 3
- SlopeThreshold = 0.00003 (3 points per bar)
ATR:
- ATR = iATR(Symbol, M5, ATRPeriod, 0)
- ATRTrendThreshold = 0.0008
RSI:
- RSI = iRSI(Symbol, M5, RSIPeriod, PRICE_CLOSE, 0)
5. Candle & wick definitions
For candle index 1 (closed bar):
- BodySize = abs(Close[1] − Open[1])
- UpperWick = High[1] − max(Open[1], Close[1])
- LowerWick = min(Open[1], Close[1]) − Low[1]
- TotalRange = High[1] − Low[1]
Momentum candle:
- BodySize ≥ 0.6 × TotalRange
- For bullish: UpperWick ≤ 0.2 × TotalRange
- For bearish: LowerWick ≤ 0.2 × TotalRange
Rejection wick:
- Bullish rejection:
- LowerWick ≥ 0.4 × TotalRange
- BodySize ≤ 0.3 × TotalRange
- Close[1] > Open[1]
- Bearish rejection:
- UpperWick ≥ 0.4 × TotalRange
- BodySize ≤ 0.3 × TotalRange
- Close[1] < Open[1]
6. Market mode logic
Momentum mode = TRUE if:
- abs(EMA_slope) > SlopeThreshold
- ATR > ATRTrendThreshold
- BodySize[1] > average BodySize of last 10 bars
Reversal mode = TRUE if:
- abs(EMA_slope) ≤ SlopeThreshold
- ATR ≤ ATRTrendThreshold
- Price crosses EMA at least 3 times in last 10 bars
If both true → Momentum mode has priority.
If neither true → no trading.
7. Common filters before any entry
All must pass:
- Spread ≤ MaxSpreadPoints
- Slippage ≤ MaxSlippagePoints
- Open trades with this MagicNumber < MaxOpenTrades
- Daily loss < MaxDailyLossPercent
- Weekly drawdown < MaxWeeklyDrawdownPercent
- Trades in last 60 minutes < MaxTradesPerHour
- Minutes since last trade ≥ MinMinutesBetweenTrades
- If UseSessionFilter: time within London or NY session
- If UseNewsFilter: not within news pause window
If any fails → skip entry.
8. Momentum mode entries
Long:
- Close[1] > EMA[1]
- EMA_slope > SlopeThreshold
- ATR > ATRTrendThreshold
- RSI > 50
- Candle[1] is bullish momentum candle
- High[1] > High[2]
Short:
- Close[1] < EMA[1]
- EMA_slope < −SlopeThreshold
- ATR > ATRTrendThreshold
- RSI < 50
- Candle[1] is bearish momentum candle
- Low[1] < Low[2]
Order parameters:
- TP = TP_Pips_Momentum
- SL = SL_Pips_Momentum
Stacking:
- Allow up to MaxOpenTrades total
- Only open additional trades in same direction if last closed trade was profit and Momentum mode still active.
9. Reversal mode entries
Long:
- abs(EMA_slope) ≤ SlopeThreshold
- ATR ≤ ATRTrendThreshold
- RSI < RSIOversold
- Candle[1] is bullish rejection wick
- Low[1] < Low[2]
Short:
- abs(EMA_slope) ≤ SlopeThreshold
- ATR ≤ ATRTrendThreshold
- RSI > RSIOverbought
- Candle[1] is bearish rejection wick
- High[1] > High[2]
Order parameters:
- TP = TP_Pips_Reversal
- SL = SL_Pips_Reversal
No stacking in reversal mode.
10. Exit logic
- Fixed TP and SL only.
- No trailing stop, no breakeven, no partial close.
- No martingale, no grid, no averaging down.
11. Risk & protection
Lot sizing:
- If FixedLot → use FixedLotSize.
- If RiskPercent → calculate lot based on SL distance and RiskPerTradePercent.
Daily loss:
- If daily closed P/L ≤ −MaxDailyLossPercent of equity → block new trades until next day.
Weekly drawdown:
- Track weekly equity peak.
- If equity ≤ peak × (1 − MaxWeeklyDrawdownPercent/100) → block new trades until next week.
12. Other requirements
- EA must correctly handle restarts (recognize open trades by MagicNumber).
- Clean, commented code.
- Same logic in MQL4 and MQL5.
- Basic logging of each trade (mode, direction, indicators at entry, TP/SL, spread).
Deliverables:
- .mq4 + .ex4
- .mq5 + .ex5
- Brief description of inputs and how to attach EA
- Confirmation that logic matches spec.
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