I’m John – Quantitative Developer, Data Scientist

As the founder of J&J Trading Solutions LLC, where my passion for markets, strategy, and engineering collide. My mission is to empower traders with tools that aren’t just powerful—they’re precise, adaptive, and built for edge.

Over the years, I’ve specialized in building high-performance backtest engines grounded in real-world data and driven by Python’s VectorBT Pro framework. I help traders—whether retail or institutional—turn raw data into repeatable alpha through intelligent automation and modern infrastructure.

But this work is more than code or strategy—it’s about crafting confidence. Confidence to test ideas, take calculated risks, and grow through iteration. My work spans mean reversion, momentum, price action, and scalping strategies, optimized through walk-forward analysis, portfolio tuning, and full-stack quant engineering.

I believe great trading isn’t just about predicting the future—it’s about preparing for it. And at J&J, I help others do just that, one backtest at a time.