Portfolio Designs

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Software engineer · investing tools

Crisis-aware portfolio construction and multi-asset market analytics.

I'm a Silicon Valley software engineer who builds investing tools independently — two decades of distributed-systems work plus the CFA Program exams behind them. I design and build them end to end, from the models to the interface.

Projects

Tools I've built

Portfolio Optimizer

Crisis-aware portfolio construction using CRRA / Omega utility over a generative multi-regime scenario engine.

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Financial Analytics Dashboard

A multi-page analytics suite: ETF valuation, fundamentals, options pricing, fund flows, and market-regime detection.

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Approach

How I build

Novel methods, proven theory

Well-established finance theory — utility-based sizing (CRRA / Omega), Kelly, Monte Carlo — pushed in novel directions, with transparent assumptions you can tune.

Full-stack ownership

Modeling, design, front-end, back-end, containerized services, dev-ops, and caching — architected, built, and operated end to end, by me.

Decision-focused tooling

Dense, interactive dashboards that surface the few numbers that actually drive a decision.

Interested in the work?

I'm always happy to talk shop about markets, modeling, and the tools on this site.

© Portfolio Designs · Greg Harris

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