Builder · Product Manager · Fintech & AI

I build products. I ship code. I solve problems.

Product management in payments and fraud by day. On the side I build — most recently a live prediction-market trading bot running against real markets. Open to select consulting and advisory projects.

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Gabe Kagan
About

Hello, I'm Gabe.

I've spent the past ten years working across the payments stack — from underwriting and risk decisioning to funds availability and fraud controls — at fintech companies of varying scale.

Outside the day job I build things to solve problems I care about. I lean on AI coding tools heavily — the Kalshi bot below is 10K+ lines, entirely solo, running live on a VPS I manage myself. I think the most valuable engineers right now are the ones who know how to use these tools to ship production systems alone. That's the craft I'm trying to sharpen.

Payments
Domain
Fraud
Specialty
Product
Craft
Portfolio

Selected Work

Live products, research, and things I build to ship quickly.

Kalshi Prediction Market Bot — live performance
Live

Kalshi Prediction Market Bot

Automated trading system for CFTC-regulated event contracts. EGARCH volatility model, Kelly-sized positions, calibrated probabilities — running live with real capital.

View performance
Stock Market Prediction
Research

Markov Chain Stock Prediction

Discrete-time Markov chain model for securities trading, applying stochastic processes to predict market state transitions.

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Quantum Mechanics Research
Research

Quantum Mechanics Research

Mathematical examination of the two-slit experiment, analyzing wave function behavior and quantum probability distributions.

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Statistical Analysis
Research

Statistical Analysis

Regression analysis identifying statistically significant predictors of graduation rates across Massachusetts municipalities.

Read paper
NovaInterior.com
Development

NovaInterior.com

E-commerce web development for a furniture retailer — full-stack build including product catalog, cart system, and checkout flow.

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Work with me

Builder first. Consultant and advisor when it fits.

I take select consulting and advisory engagements when the problem's interesting. Here's what I help with.

AI-accelerated shipping

Your team has ideas but ships slowly. I help integrate AI coding tools into your dev cycle so you go from prototype to production in days, not months. Works best for startups and internal-tools teams that need velocity.

Fintech systems

Ten years across payments, fraud, and trading — production risk-decisioning at a proptech payments company, fraud systems in fintech, and a live Kalshi bot running solo. I can advise on product decisions where payments meet ML, or get hands-on with risk and fraud work.

Stuck problems

Sometimes you don't need a team — you need someone to read the code, understand the constraint, and propose a fix. I'll spend a few hours, write it up, give you a path. No retainer.

Always open to a discovery call.

me@gabekagan.io
Resume

Experience & Education

Download my resume for more on my experience across payments, fraud, and product.

Download Resume
Contact

Let's connect.

me@gabekagan.io