Zach Rubin
I build things at the intersection of math, code, and money.
Currently running OSI Finance, a tax-optimization engine for retirement accounts. Previously on Credit Suisse Asset Management's Quantitative Investment Strategies team. Before that, Purdue — triple major in Math-CS, Applied Statistics, and Political Science.
What I've built
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OSI Finance — FounderLinear optimization for tax-advantaged retirement allocation. 14 tax calculators behind a REST API. Plaid developer partner. Accepted into Microsoft Founders Hub and Jason Calacanis's Founder University.
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NutraStack — Co-founderSupplement comparison marketplace. Tested unit economics with $10k+ in paid acquisition before affiliate margins told us no. Accepted into Microsoft Founders Hub and Founder University. Now in low-cost maintenance.
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aicademy — Co-founderAI-assisted study materials generator. Accepted into Microsoft Founders Hub. Shut down after concluding the consumer AI-education market didn't have room for another entrant at our scale.
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Credit Suisse Asset Management — QIS AnalystResearch and technology for a $3B AUM book of liquid alternative strategies. Refined P/L and strategy-weight generation code; improved tooling for monitoring and portfolio construction.