# Todd Schiller

> Personal site of Todd Schiller, PhD — co-founder and CEO of PixieBrix. Writing focuses on software engineering, browser extensibility, programming languages, verification, AI coding, and applied reasoning.

Todd holds a PhD in software engineering and programming languages from the University of Washington (advised by Michael Ernst), and BS/MS degrees from Washington University in St. Louis. The blog spans both peer-reviewed research interests (verification, DSLs, machine learning) and practical engineering essays (debugging, testing, hiring, web automation).

Blog posts live under `/blog/{slug}.html`. Static pages live under `/pages/{slug}.html`. Interactive single-page artifacts (calculators, demos) live under `/artifacts/{slug}/`. Every HTML page has a Markdown version with the extension replaced by `.md`, including `/index.md` for the homepage and `/artifacts/{slug}/index.md` for artifacts. Request `Accept: text/markdown` on an HTML or directory URL to negotiate Markdown. Interactive artifacts export their static text; use the HTML page to run them.

For the full, current list of posts use the feeds below rather than caching any per-article list.

## Start here

- [Home](https://toddschiller.com/index.md): Latest writing and selected essays.
- [Start here](https://toddschiller.com/pages/start-here.md): Reading guide.
- [Extensibility](https://toddschiller.com/pages/extensibility.md): Weekly series index.

## About

- [About Todd Schiller](https://toddschiller.com/pages/about.md): Biography, education, research lineage, and professional service.
- [Subscribe](https://toddschiller.com/pages/subscribe.md): Email subscription page (Buttondown). RSS/Atom feeds are also linked from this page.
- [Publications](https://toddschiller.com/pages/publications.md): Peer-reviewed research publications.
- [Speaking](https://toddschiller.com/pages/speaking.md): Conference talks and invited presentations.
- [Artifacts](https://toddschiller.com/pages/artifacts.md): Interactive single-page tools and demos hosted on the site.
- [Social / Contact](https://toddschiller.com/pages/contact.md): Links to LinkedIn, GitHub, X, Bluesky, and other profiles.

## Blog

- [Blog index](https://toddschiller.com/blog/index.md): Paginated list of all posts (essays and notes), newest first.
- [Notes](https://toddschiller.com/notes/index.md): Notes-only index. Shorter pieces, announcements, talk previews, and cross-posts. Distinct from long-form essays.
- [Sitemap](https://toddschiller.com/sitemap.xml): XML sitemap covering every post, page, and index on the site.
- [All posts — Atom feed](https://toddschiller.com/feeds/all.atom.xml): Canonical machine-readable feed of every post (title, summary, body, date).
- [All posts — RSS feed](https://toddschiller.com/feeds/all.rss.xml): Same content as the Atom feed in RSS 2.0.

## Topic feeds

Per-category Atom feeds. Each is the authoritative list of posts in that category.

- [Browser Extensions](https://toddschiller.com/feeds/browser-extensions.atom.xml): Browser extensibility, web automation, PixieBrix.
- [Extensibility](https://toddschiller.com/feeds/extensibility.atom.xml): The weekly "This Week in Extensibility" roundup of plugin platforms, sandboxes, agentic-web standards, and plugin-ecosystem governance. This series is excluded from the general notes index and blog index; this feed is its authoritative list.
- [Software Engineering](https://toddschiller.com/feeds/software-engineering.atom.xml): Debugging, process, asking good questions, and engineering practice — including the economics of software work.
- [Verification](https://toddschiller.com/feeds/verification.atom.xml): Static analysis, type systems, formal methods.
- [Testing](https://toddschiller.com/feeds/testing.atom.xml): Unit testing and data provenance.
- [Reasoning](https://toddschiller.com/feeds/reasoning.atom.xml): Analytical reasoning, ACH, Bayesian methods.
- [Machine Learning](https://toddschiller.com/feeds/machine-learning.atom.xml): Applied ML and probabilistic models.
- [Domain Specific Languages](https://toddschiller.com/feeds/domain-specific-languages.atom.xml): DSL design, especially for finance.
- [Talent Acquisition](https://toddschiller.com/feeds/talent-acquisition.atom.xml): Hiring, interviewing, and diversity.