- Trading Bot Repair & Build | MQL4/MQL5, Pine, cTrader en StratCoreAlpha
- Alemania
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I work with traders and trading-product owners who have authorized source code or deterministic rules. MQL4/MQL5 is the main focus. Pine Script, cTrader and NinjaTrader are platform variants of the same core job: turn owned rules into testable software behavior.
PUBLIC PROOF
This profile includes five published MT5 products and four official open-source CodeBase diagnostics. MT5 EA Acceptance Harness (#76039) contains eight deterministic entry-state fixtures, compiled with 0 errors and 0 warnings and passed an isolated 8/8 MT5 runtime run. The other tools cover cash-risk sizing, broker/symbol constraints and order preflight checks.
CLEAR SCOPES
49 USD: one reproducible defect in authorized readable source up to 500 lines, delivered within 48 hours with three agreed tests, editable source, compiled result where available, change note, setup notes and one scope-related revision.
149 USD: one simple testable bot from complete rules, including one strategy, clear entries and exits, basic risk controls and three tests.
179 USD: one bounded cross-platform behavior migration with three parity tests.
99 USD/month after a successful first job: one bounded micro repair or one three-case release check per month, first review within one business day, no rollover.
ACCEPTANCE
The three written acceptance cases pass, or the delivery is not finished. This is a software acceptance guarantee, not a profit, win-rate, drawdown or challenge-pass promise. I do not decompile protected EX4/EX5 files or operate live accounts.
Start with the platform and version, authorized source or complete rules, current behavior, expected behavior and three acceptance cases.
1. Day boundary: broker-server date or a named timezone.
2. Reference: start-of-day balance, start-of-day equity, or intraday equity high-water.
3. P/L: realized only or realized plus current floating result.
4. Restart behavior: reconstruct the reference from deal history or persist the first valid observation and disclose the limitation.
For a high-water definition, the testable formula is DrawdownAmount = max(0, PeakEquity - CurrentEquity), and DrawdownPct = 100 * DrawdownAmount / PeakEquity with a zero guard. The peak must only move upward during the selected day and must survive chart reloads and terminal restarts.
Useful acceptance cases are more important than a pretty panel: one realized win/loss, one open position, one threshold crossing without duplicate alerts, one recovery and recross, and one restart. If two dashboards use different choices above, both can compile cleanly while reporting different numbers.
1. Signal timing: current tick, current candle, or last closed candle? Multi-timeframe rules must state which bar is final.
2. Position model: one position, pyramiding, hedging or netting? Define symbol, direction, Magic Number and manual-trade filters.
3. Risk units: fixed lots, percent risk, money, points or ATR? Define rounding, minimum volume and what happens when a stop is invalid.
4. Broker behavior: digits, stop/freeze levels, filling mode, spread limits, retry rules and trading-session boundaries.
5. Acceptance examples: provide at least one should-trade case, one should-not-trade case and the expected SL/TP calculation.
A phrase such as “enter when trend is strong” cannot be tested. A rule such as “after the H1 candle closes above EMA 50, enter on the next tick only if spread is below X points and no matching position exists” can be implemented and verified.
Freezing these details before development prevents most scope disputes and makes backtests reproducible. This same checklist works for indicators, dashboards, alerts and Pine-to-MT5 conversions.
For an accurate quote, send the platform, editable source or written rules, symbol/timeframe, current versus expected behavior and chart examples.
I work specification-first and deliver source code, documented inputs and a verification checklist. I do not decompile protected files or promise trading results.
- one reproducible EA or indicator bug
- one bounded feature such as risk sizing, break-even, partial close or a session filter
- one simple MT5 EA from explicit entry and exit rules
- one TradingView/Pine Script behavior map or MT5 conversion
The fastest way to get an accurate quote is to provide the platform, editable source or written rules, symbol/timeframe, current versus expected behavior and one or two chart examples.
I work specification-first and deliver source code, documented inputs and a verification checklist. I do not decompile protected files and do not promise profit, returns or prop-firm results.
My profile contains five published MT5 products and several public CodeBase tools that show the type of dashboards, risk controls, indicators and trade management I build.
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