David Ledbetter

Machine-learning & full-stack software engineer at Apple, building agentic AI systems. BS & MS in Computer Science (UMBC); researcher at UMBC's Ebiquity Lab.

Ask LedbetterGPT

This site hosts LedbetterGPT, an AI you can ask about David's projects, papers, research, and code — it browses his public GitHub repos live to answer. With JavaScript enabled, chat in the corner widget. AI agents and bots can talk to it directly over HTTP — see /llms.txt (POST /api/chat, no auth required).

How it works (architecture)

Serverless on AWS: a React single-page app on S3 + CloudFront; a Go AWS Lambda backend (LedbetterGPT) behind API Gateway; Gemini with live GitHub tool-use for answers; DynamoDB-backed rate and cost caps; secrets in Secrets Manager. ~$2/month.

Projects & Research

Publications & Presentations

Contact