Guides for algorithmic traders

Algorithmic Trading Blog — Expert Advisors, MQL5, PineScript and Backtesting

Practical, technical guides from the developer behind ExpertNevees: why EAs fail live, how to backtest properly, how PineScript versions differ, and how to automate TradingView alerts in MetaTrader.

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Latest Guides

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Backtesting

Why Your Expert Advisor Works in Backtest but Fails Live

The seven most common reasons an EA that looks profitable in the Strategy Tester loses money on a live account, and how to test for each one.

October 4, 2026 · 8 min read

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MetaTrader

MT4 vs MT5 for Expert Advisors: Which Platform Should You Choose?

A practical comparison of MetaTrader 4 and MetaTrader 5 for Expert Advisor development: language, account model, backtesting, timeframes and when each makes sense.

October 4, 2026 · 7 min read

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PineScript

PineScript v4 vs v5 vs v6: Differences and How to Migrate

What changed between PineScript v4, v5 and v6, with side-by-side code, common migration errors and advice on which version to use for indicators and strategies.

October 4, 2026 · 8 min read

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Backtesting

How to Backtest an Expert Advisor Properly in MetaTrader 5

A step-by-step process for backtesting an Expert Advisor in the MetaTrader 5 Strategy Tester: settings, data, metrics, robustness checks and forward testing.

October 4, 2026 · 9 min read

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Automation

How to Send TradingView Alerts to MetaTrader 5 with Webhooks

How a TradingView webhook bridge to MetaTrader 5 works: architecture, alert message format, a secure Python endpoint, and the pitfalls that cause duplicate or missed trades.

October 4, 2026 · 8 min read

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About this blog

Practical Guides for Algorithmic Traders

These guides come from day-to-day work building Expert Advisors, indicators, cBots and trading automation. They focus on the questions traders ask before and after commissioning a bot: why a profitable backtest fails on a live account, how to test a strategy properly, which MetaTrader platform to choose, how PineScript versions differ and how to connect TradingView alerts to a broker platform.

New guides are added as common questions come up from real projects. Each one includes code or settings you can check yourself, so you can judge the quality of the work before you ever contact us.

Each article states its limits plainly. No bot or backtest can guarantee profit, and trading leveraged products carries a high risk of loss. If you want an independent opinion on your own strategy or Expert Advisor, you can request a free consultation.

For the services behind these guides, see Expert Advisor development, backtesting and optimization, TradingView to MetaTrader conversion and the PineScript, MQL4/MQL5 and Python language guides.