Richard Hamilton

React 19 · TypeScript · Vite · Python

Find a moment in an hour-long recording without dragging the scrubber around. The transcript is the navigation: search for a phrase, click the line, the video jumps there. Matches are highlighted, results are counted, and it works on a phone.

• A Python ingestion step reassembles the raw caption feed — 3–6 word display fragments, chopped wherever the text hit the edge of the screen — into 400+ sentence-sized chunks. Straight from the API a search phrase can straddle two lines and match neither.
• Transcripts are pre-seeded at build time, not fetched per request: the upstream endpoints block datacenter IPs, which is exactly where this deploys. Fetching live would mean the demo breaks at random while someone is looking at it.
• The player is driven through postMessage rather than the official IFrame API, whose async script load and global ready callback fight React's component lifecycle.
• Bundling the transcript instead of fetching it costs 84 kB gzipped, about 40% of it the data itself. It buys a page with no loading state, no error state, and no network round-trip. At one transcript that's the right trade; at ten it wouldn't be.
• The timestamp formatter is unit-tested with Vitest, boundaries included. Every design call and the reasoning behind it is written up in the repo's README.

Python · Pandas · scikit-learn · Streamlit

A regression model that predicts used-car prices, taken all the way from a messy listings dataset to a deployed app anyone can open and use.

• Cleaned the raw listings: missing values, categorical encoding, outlier treatment.
• Evaluated against held-out test data using R² and mean absolute error.
• Shipped an interactive interface that predicts in real time from user-adjustable inputs.

Django · Python · PostgreSQL · JavaScript

A full-stack Django app that rolls D&D 5e characters with rules-based stat distribution, and persists them.

• Designed and normalized the PostgreSQL schema for races, classes, and stat modifiers.
• Conditional logic adjusts stat allocation by race and class combination, mirroring 5e rules.
• Responsive interface with dynamic client-side rendering in vanilla JavaScript.