HFT/Scalping EA Live Performance Improvement: Slippage, Requotes & Execution Logic

Situation: Please contact me privately so I can provide the source code for review. Thank you.

Project Overview:

I have developed a high-frequency trading (HFT) EA that performs consistently in demo environments and passes most prop-firm requirements. While short live phases showed profitability, the results were not reproducible over time. My primary goal is stable live performance on retail accounts, not just prop-firm qualification.

Current Status & Testing:

• Tested Environments: Multiple brokers including 3-digit setups (Exness) and IC Markets Raw Spread.

• Infrastructure: IC Markets VPS (0.35 ms latency).

• Current Features: Dynamic SL/TP/Trailing, Slippage & Spread filters, Order deletion on slippage mismatch, News & Volatility filters.

• The Core Problem: The EA currently has a "low edge." While it works in ideal conditions, live market frictions (slippage, execution delays) erode this edge. I am looking for a developer who can either enhance the edge while maintaining the HFT nature or implement superior filtering to eliminate losing periods caused by execution discrepancies.

Suspected Root Causes to Investigate:

• Slippage & requote handling in live environments.

• Demo-vs-live tick feed differences and "Last Look" / asymmetric slippage.

• Execution mode optimization (Market vs. Exchange vs. Request).

• Handling of partial fills and latency-sensitive entry/exit logic.

Scope of Work:

1. Deep Code Review: Analyze the existing 1,400+ line EA structure.

2. Execution Hardening: Restructure entry/exit logic to be robust against real-world spread and slippage.

3. Advanced Testing: Integrate a realistic backtesting framework (variable slippage, execution delays, and requotes).

4. Execution Diagnostics: Build a live-vs-demo execution logger to compare "expected" vs. "actual" fills.

5. Enhanced Filtering: Refine protective filters (Spread, News, Session, Latency monitoring).

Developer Requirements:

• Proven Track Record: Extensive experience with HFT/Scalping EAs in live environments (references/track record preferred).

• Market Mechanics: Deep understanding of broker execution models (A-Book, B-Book, STP, ECN).

• Testing Excellence: Ability to perform tick-data backtesting at ≥99% modeling quality, every Tick based on real Ticks not Tick by Tick backtest.

• Language: Expert-level MQL5.

Not Looking For: Developers without live HFT execution experience, generic EA optimizers, or proposals based on curve-fitting.

Note: I am an experienced trader (6 years Forex/Gold) and technically competent. I expect substantive, reasoned proposals that address execution logic, not just parameter optimisation