Senior MQL5 Expert Advisor Development Requirement — XAUUSD & BTCUSD

I am looking for an experienced MQL5 developer to design and build a robust MT5 Expert Advisor for XAUUSD (Gold) and BTCUSD.

This is not a request for a basic RSI/EMA EA, martingale, grid, or recovery system.

I want a properly engineered algorithmic trading system with a demonstrable trading rationale, robust risk management, reliable execution and extensive testing.

What I am looking for

The developer should be capable of designing a strategy suitable for intraday/scalping trading, particularly on lower timeframes such as M1/M5 where appropriate.

I am open to the developer proposing the trading methodology. Possible approaches could involve:

• Market structure

• Momentum

• Breakouts

• Volatility

• Price action

• Trend/pullback

• Liquidity/structure

• ATR-based volatility management

• Session-based behaviour

I do not want unnecessary indicator stacking. Every component should have a logical purpose.

Critical requirements

Risk Management

The EA must support:

• Percentage-based risk per trade

• Automatic lot calculation

• Maximum daily loss

• Maximum daily drawdown

• Maximum consecutive losses

• Maximum trades/day

• Maximum open positions

• Maximum account exposure

• Equity protection

• Optional daily profit target

Trade Management

Configurable:

• Stop loss

• Take profit

• Risk/reward

• Break-even

• Partial profit

• Trailing stop

• ATR/structure-based exits

Execution Protection

The EA must handle:

• Maximum spread

• Slippage/deviation

• Spread spikes

• Volatility spikes

• Invalid stops

• Insufficient margin

• Order rejection

• Connection interruptions

• Broker-specific symbol specifications

State Management

This is particularly important.

After:

• MT5 restart

• VPS restart

• EA restart

• Internet disconnection

• Terminal crash

• Manual position/order modification

the EA must reconcile its internal state with the actual broker/account state.

It must prevent duplicate trades and uncontrolled order loops.

XAUUSD + BTCUSD

The EA must account for the fact that Gold and Bitcoin have very different volatility and market behaviour.

I want separate configurable profiles/parameters for each instrument rather than assuming identical settings.

Broker suffixes such as XAUUSDm/BTCUSDm must be handled correctly.

Testing & Validation

I am particularly concerned about overfitting.

I do not want an EA that produces an impressive backtest but fails in live trading.

Testing should include:

• Real tick data where available

• In-sample testing

• Out-of-sample testing

• Forward demo testing

• Parameter sensitivity testing

• Different market regimes

• Spread/slippage sensitivity

• Drawdown analysis

• Walk-forward testing where practical

• Monte Carlo/robustness testing where practical

The objective is robustness and consistency, not simply maximum historical profit.

A strategy producing 1000% backtest profit with 70% drawdown is not what I am looking for.

I would prefer a realistic system with controlled drawdown and stable performance across different periods.

Code Quality

Requirements:

• MQL5 source code (.mq5)

• Compiled .ex5

• Clean and maintainable architecture

• Proper error handling

• No unnecessary DLL dependencies

• No hidden external dependencies

• Configurable inputs

• Useful debug/logging information

• Successful compilation with 0 errors

Deliverables

The final delivery should include:

1. Complete .mq5 source

2. .ex5

3. XAUUSD preset

4. BTCUSD preset

5. Strategy Tester configuration

6. Backtest results

7. Testing methodology

8. Explanation of strategy logic

9. Parameter documentation

10. Installation instructions

Developer Requirements

Please apply only if you have strong practical MQL5/MT5 EA development experience.

In your proposal, please answer:

1. How many years have you worked with MQL5?

2. Have you developed EAs specifically for XAUUSD or BTCUSD?

3. Please provide examples of previous EA projects.

4. How do you prevent over-optimization/curve fitting?

5. How do you perform out-of-sample and forward testing?

6. How do you handle EA state after MT5/VPS restart or connection loss?

7. What trading strategy would you initially consider for this project and why?

8. Fixed development cost?

9. Estimated development time?

10. What information/data do you require from me before starting?

Important

I am not looking for a developer who promises guaranteed profits.

I am looking for someone who understands algorithmic trading, statistical robustness, risk management and professional MQL5 engineering.

If your approach is primarily martingale, grid, averaging-down or aggressive recovery, please do not apply.

Post-delivery support:

The developer must provide a 30-day bug-fix/warranty period after final delivery. Any bugs, compilation issues, execution errors, or functionality that does not conform to the agreed specification must be fixed at no additional cost.

This does not include requests for new features or changes to the agreed trading strategy.