Projects by Jonathan Rarey

A selection of things I've designed and shipped. Detail pages cover the architecture decisions behind each one.

All projects

• RL Trading Platform

  Algorithmic trading platform in Go and Python that traded real money through Alpaca for several months in 2025: 100k+ messages ingested per second per core, ML inference in the loop, 99%+ uptime while live.

  • Go
  • Python
  • PyTorch
  • Redis
  • Docker
  • AWS EC2
  • Alpaca API

• Techtoniz

  CompTIA A+ exam-prep web app with scenario quizzes, a PC-builder and command-prompt simulator, and an ElevenLabs-voiced narrator that reacts to your answers.

  • React
  • TypeScript
  • AWS Lambda
  • ElevenLabs
  • Go

• VerusPDF

  Free desktop PDF editor for Windows, macOS, and Linux: merge, split, rotate, encrypt, and edit text in place. No subscription, no paywall.

  • Go
  • Wails
  • React
  • pdf.js
  • GitHub Actions

• Local SEO Scanner

  Full SEO scanner measuring local-search impact for service businesses: enter a URL, get a prioritized, plain-language report.

  • Go
  • React
  • TypeScript
  • AWS Amplify Gen 2
  • AI APIs