Ryan Hernalsteen
AI & Data Architect · Builder · Photographer
Father of two daughters. Based in Michigan.
Currently at Perficient as Senior Solutions Architect. My Career → About me →
What I'm building All projects →
- Reply All A text-based workplace RPG built right into this site, with Google sign-in so a run saves across devices. No fixed script: the story reacts live to your choices across 108 scenarios and 14 endings, plus a seeded daily run everyone plays the same day.
- Personal Health Data Warehouse Python + SQLite system pulling from Apple Watch, iPhone, and a medical device. 18 months of data, 16,000+ metrics, calibrated against a clinical baseline.
- Second Brain Obsidian vault with eight linked note types: daily logs, people, projects, decisions, goals, and more. A Claude Code skill takes raw brain dumps and files them as structured, linked Markdown, automatically.
- This Website Designed and built with Claude Code from the ground up. Astro, Cloudflare Pages, and a structured memory system that persists context across sessions.
- iOS Apps Two shipped iPhone and Apple Watch apps: Current: Recovery Score, a daily recovery number from your Apple Health data, and Good Night, an evening sleep readiness score. Built with Swift as a first-time iOS developer.
Latest posts All posts →
- Aug 2026 8 min read Planning a Family Trip With Claude
- Aug 2026 5 min read Current 2.1: Sleep Gets Serious
- Aug 2026 7 min read Running a Travel Softball Season With Claude
- Jul 2026 5 min read Salesforce Released an MCP Server. I Used It to Cut a Marketing Cloud Build in Half.
- Jul 2026 7 min read Close Enough: The Calorie Log I'll Actually Keep
Photography View all →
