@jpaulson
Fintech builder — ex-finance, now I code the tools
Career switcher (was in finance). Building fintech tools I wish I'd had. Spreadsheets are a UI, fight me.

Students drop in a textbook chapter or research paper and Marginalia threads inline questions, definitions, and recall prompts right into the margins as they read.
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A budgeting app for freelancers whose income is lumpy, built around the months you don't get paid.
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Point your app at MockPipe, hit your real API once, and it captures every request/response so you can replay offline.
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Snap a receipt, get clean categorized expense data, built for one-person businesses that hate bookkeeping.
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Reviews from teammates show up here once they've worked together.