John Leonardo

Senior Software Engineer

Hey! I'm currently a Senior Engineer at Roblox working on people/AI systems. Before that, I was at Amazon working in Search AI and anomaly detection in logistics. Before that, I was working at IBM on infra modernization.

SF Bay AreaSenior Engineer at Roblox0 page views

Elsewhere

GitHub/LinkedIn/Email/Mentorship

Things I'm Building

  • Resume Rodeo - AI resume analysis and optimization.
  • Lite.fyi - A stripped-down link shortener built for speed.
  • Stock Quant AI - Equity research workflows with AI in the loop.

iPhone Apps

  • Convo - AI chat agents.
  • Tale - A story generator for quick narrative experiments.
  • Grasp - Learn-anything prompts and explanations.
  • Plate - AI-assisted calorie tracking.
  • Prism - Photo and art edits with AI.

Open Tabs

If you want the broader catalog, the apps index is the fastest path. If you want the thinking behind the work, the blog is where I put the longer writeups.

Browse apps/Read the blog/Start a conversation