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Flavio Espinoza

flavio.espinoza@gmail.com•Schedule a call•flavioespinoza.com•GitHub•LinkedIn•(385) 216 - 8969•Salt Lake City, UT
Custom Backtester2026

Built for the Sol Engine trading platform, the Custom Backtester is a deterministic engine that replays years of market candles through a trading strategy and proves -- to the decimal -- how it would have performed before any real money is at risk.

It is the same engine that validated the signal behind Sol Engine. I designed it to be reproducible and cross-checkable: the goal was a backtest you can actually trust, not a number you have to take on faith.

  1. A.Deterministic by design -- the same candles always produce the same trades, so a backtest result reproduces exactly and never drifts from live behavior.
  2. B.Cross-validated three ways -- the strategy was reproduced as a custom Pine Script on TradingView and a custom Python strategy on QuantConnect, and all three implementations agree to the decimal.
  3. C.Produces interactive HTML reports -- every historical trade, its entry and exit, and the resulting equity and drawdown, charted end to end.
  4. D.200+ core code files. Substantial enough to serve as the codebase for an independent A/B model evaluation I designed and ran -- scored 5/5, marked 'Perfect task!' with zero weaknesses noted.