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Dev Index

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

October 2026
A grayscale illustration of a short, compact section of crenellated rampart wall in the foreground, with the full original fortress wall and its two towers faded in the background, rendered with a soft grain.

Rampart Edge: On-device privacy filter, now 10x smaller

Privacy, AI, Open-Source

Rampart Edge is a new version of Rampart, the filter we released in June to help remove personal information before it leaves your browser. Rampart was already the smallest model of its kind. Edge is ten times smaller, at just 1.45MB, and blocks far fewer legitimate messages by mistake.

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

Introducing Rampart: A new model for on-device privacy

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.

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.