Founder · Developer · Writer

I build products and write stories.

I turn ambitious ideas into working products — designing the experience, building the systems behind it, and explaining the thinking clearly. My work spans fintech, AI, privacy, and developer tools.

root@mattjhagen: ~/portfolio
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Featured builds

Fintech · Full-stack platform

P³ Lending

A peer-to-peer lending platform that helps people build financial trust through real repayment history — built end to end, from identity and payments to reputation scoring and blockchain-backed verification.

AI · Developer tool

ResumAI

Upload a résumé, receive a website — an AI pipeline that extracts, structures, and publishes a personal portfolio with its own theme and subdomain.

Social platform · Privacy

OpenTok

A privacy-first short-form video platform — donations, not data. A community-funded alternative to surveillance-based social media.

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By the numbers

255
public repositories
2
companies founded
9+
languages shipped in
1
novel in production
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Two tracks

Software

Code & projects

Full-stack products across fintech, AI, privacy, and developer tooling — from early architecture through production deployment.

Fiction

Books & writing

Long-form fiction, including the psychological thriller The Gentle Conquest.

Contact

Get in touch

Open to collaboration, freelance, and conversations about either craft.

04

Latest

Currently building P³ Lending, a reputation-driven peer-to-peer lending platform, while continuing to experiment with AI developer tools and privacy-first software.