Trading Systems Lab

Practical notes on EA building, MT5 testing, risk control, and market timing. Less hype, more systems.

Tip: Use short keywords like “London”, “ATR”, “spread”, “JPY”.

How I Structure a Profitable MT5 EA From Scratch

Learn how to structure a profitable MT5 Expert Advisor from scratch. This guide covers EA architecture, MQL5 file structure, trading logic design, and production-ready best practices used in real trading systems.

MT5 EA development EA architecture MQL5 structure trading logic design algorithmic trading
2026/01/15

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EA architecture (1) MQL5 structure (1) algorithmic trading (1) trading logic design (1) MT5 EA development (1)
How to use this blog
  • Pick a session (Tokyo/London/NY) and test one idea.
  • Use fixed risk per trade, then optimize only after stability.
  • Bookmark your best setups and keep a track record.