Accessibility-First Software Engineering: Building Inclusive Systems from the Ground Up

This article explores the architectural and cultural foundations of accessibility-first software engineering. The technical patterns discussed — including accessibility context propagation, multi-modal API design, and accessibility observability — represent practical starting points for teams beginning this work. WCAG 2.2 remains the primary technical reference standard, and hands-on testing with actual assistive technologies should accompany any automated tooling strategy. What if the way we build software has been wrong this whole time — not morally wrong, but architecturally wrong? There is a story engineers love to tell about curb cuts. When cities started installing those small concrete ramps at sidewalk corners to help wheelchair users navigate urban streets, something unexpected happened. Everyone started using them — parents pushing strollers, delivery workers hauling hand trucks, travelers dragging rolling luggage, cyclists, skaters, elderly pedestrians with canes. A design de