Portfolio
A decade of payments,
data, and tooling.
Selected case studies across product management, data engineering, AI research, and analytics — from current Vaultapps engagements and PhD work back through Braintree, PayPal, and earlier builds. Write me for the longer list.
App-store intelligence platform
Market-intelligence platform for app brokers — Google Play crawler, live-deals scraper, and a TimescaleDB warehouse holding ~45M App Store listings, surfaced through an Elixir/Phoenix API.
Gameday Media — high-school sports MVP
Multi-surface MVP for a high-school sports media platform — Expo mobile app, Next.js admin, and infrastructure. Hard-scoped launch around one school, one sport, one season.
OptoTech — eye-performance training app
iOS-first mobile app for sports-performance eye training — guided exercises across focus, coordination, agility, and stability. Sole-developer build alongside a clinical lead.
RAG and Text-to-SQL over Open Government Data
PhD research on chat interfaces over municipal and federal datasets — Retrieval-Augmented Generation with verifiable citations, plus Text-to-SQL for structured public datasets.
Financial Recovery with Automation
Led the build of an automated dispute-recovery system on the Braintree Payments API that recovered over $10M annually for merchants — GraphQL mutations, automated fund recovery, custom enterprise reporting, and a state-machine-backed dispute lifecycle.
Automated payroll processing for Antigua Guatemala
An automated pipeline that turned scanned municipal payroll PDFs into a clean, machine-readable dataset — AWS S3, Textract, and LLMs in the loop on the flagged rows — replacing a fragile manual extraction workflow.
Payroll open-data dashboard for Antigua Guatemala
An interactive open-data dashboard that lets the citizens of Antigua Guatemala see and understand how their municipal payroll is spent — automated integration, AI-assisted cleaning, and accessible visualizations.
Xoom data deletion for GDPR/CCPA
Led the design and rollout of Xoom's automated data-deletion system to reach 100% GDPR and CCPA compliance — the cross-org program that gated, and then unlocked, Xoom's full European launch.