
He helped build athenahealth, lost the company he led, and returned to the work of founding. Then Jonathan Bush took his appetite for reinvention into Maine politics.
A missing software tool sent Alan Carson and Lee Skillen down a different road. The Cloudsmith co-founder has been revising the plan ever since, with Belfast firmly on the map.
Glenn Weinstein is the CEO of Cloudsmith, the cloud-native software supply chain platform headquartered in Belfast, Northern Ireland. A U.S. Naval Academy graduate and former naval flight officer who learned to code on a Commodore 64, he co-founded the cloud consultancy Appirio (sold to Wipro for $500M) and spent four years as Chief Customer Officer at Twilio before relocating from New York to Belfast in 2023 to lead Cloudsmith. Under his leadership Cloudsmith raised a $72M Series C in April 2026, positioning the company to secure software supply chains in the age of AI coding agents.