Block Island Ferry SMS Alerts

The ferry’s SMS alert system served around 4,400 subscribers on a failing WordPress plugin. I migrated it onto a Twilio messaging service, cutting send time from over an hour to roughly 20 minutes, and rebuilt the subscriber lifecycle, including opt-in, opt-out, and storage, on the PHP backend. This was the backend-heaviest project of the rebuild: message delivery, subscriber state, and the third-party integration that ties them together.