L. MANSFIELD

Projects.

A few builds I’m proud of — a live ML app, a realtime fraud pipeline, an end-to-end data pipeline, and a privacy-first RAG system in the works.

In prerelease

Lighthouse Coming soon

A security- and privacy-first RAG system for your personal files — answers questions over your own documents without handing them to a third party. Currently in prerelease while I finish the branding.

  • RAG
  • Privacy
  • LLMs
Download & GitHub coming soon

Live app · Machine learning

eFrog — Frog Sound Classifier

An audio-classification model that identifies 19 Floridian frog species from sound input — record a call, get a species. Built around a deep-learning model with a live web interface.

  • Python
  • Audio ML
  • Web app
Open the live app ↗

Data engineering · Streaming

Realtime Fraud Detection

A streaming pipeline that scores transactions for fraud signals in near real time, with downstream monitoring. The latest iteration of a project I’ve rebuilt several times to push latency and precision.

  • Python
  • Supabase
  • Streaming
View on GitHub ↗

End-to-end pipeline

Owl Park Archived

A complete, simulated e-commerce site: bots role-play as customers, dynamic-pricing agents adjust prices on the fly, and performance analytics track it all — generating live data for an end-to-end pipeline you can explore in the architecture diagram. Retired now, but still worth a look.

  • n8n
  • Supabase
  • Microsoft Fabric
  • Power BI
View the architecture diagram ↗

More on GitHub →