I'm Dan — a back-end software engineer who builds and operates things end-to-end.

• pin-unpin-all — A Chrome extension that adds a button to pin or unpin all tabs in the window. Over 5,000 users.
• git-stash2d — Stash the changes between two commits to the file system as human-readable patches. Great for saving branches to cloud storage and patching them back later — if a patch doesn't apply cleanly, the stash itself serves as a readable code reference.
• copilot-stash2d — The Copilot-session successor to git-stash2d. Exports a GitHub Copilot CLI session “to directory” as portable, editable files that can be stored offline, shared, and applied to a new session.

An interactive map of live music events north of Seattle. The backend scrapes and parses a PDF schedule, geocodes venues via Google Places, and decodes genre abbreviations. The frontend renders everything on a Leaflet map with filtering and search.

Next.js · React · TypeScript · Flask · Leaflet · Google Places API · Docker

I built a watchface and an app for the Pebble smartwatch, which led me to build full weather and earth-data API's to power them.

• Day Marine US — A watchface for boaters showing tides (with rising/falling indicator), wind speed and direction, sunset time, temperature, and forecast. Displays a propeller loading graphic.
• Weather Text US — Displays a plain-text weather summary on the watch.

C · Pebble SDK

The backend that powers the watchface apps — serves smartwatch-friendly summaries including forecasts, tides, sunrise/sunset, and wind conditions. HMAC-authenticated, with request logging and monitoring built in.

Python · Flask · Redis · Docker · OpenAI API · NOAA

An admin dashboard for viewing API logs on an interactive map, tracking service health, and monitoring request patterns. Authenticated with Flask-Login and visualized with Leaflet marker clusters.

Python · Flask · Leaflet · Docker

My personal site and the support site for all of these projects, self-hosted on Azure.

Next.js · React · TypeScript · Tailwind CSS

A health and uptime monitor that runs scheduled checks against all ev0lut1on services — weather, platform, rocks, and the landing page. Authenticates where needed (HMAC for weather endpoints) and sends email alerts on failure. Self-monitoring via its own /health endpoint and UptimeRobot.

Python · Flask · SMTP · Docker

The shared infrastructure layer that ties everything together — Caddy as a reverse proxy with automatic HTTPS, plus Redis for caching, request logging, and temporary storage across services. Everything runs in Docker Compose.

Caddy · Redis · Docker Compose