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Dev Index

Field notes from the engineers and designers on the tools, systems, and decisions behind the work.

June 2026
A grayscale illustration of a medieval stone rampart with crenellated battlements and two towers, rendered with a soft grain.

Introducing Rampart

Privacy, AI, Open-Source

An open-source, on-device personal information filter — among the smallest and most effective that can reasonably run in a browser.

May 2026
Fireworks over Washington, D.C. with an AI search prompt asking “Where should I go for the 4th of July?”

Making AI Useful

AI, Evals, UX

Lessons from building AI-powered experiences that prioritize user interfaces over chat responses.

February 2026
Close-up profile of a person overlaid with WCAG 2.2 Level AA Pass accessibility badges

Accessibility Matters

Accessibility, Design, Craft

Treating accessibility as a core design responsibility, not a compliance checkbox—eliminating friction so every American can use public technology with dignity.

December 2025
Grayscale cutaway illustration of an underground records archive with office workstations and rows of filing cabinets in rock tunnels

How We Automated Federal Retirements

Engineering, Government, Speed

Two engineers walked into the government six months ago to drag federal retirements from an underground mine onto the Internet. They built retire.opm.gov and are poised to turn six-month waits into near-instant processing for hundreds of thousands of employees.