Abdul Jamjoom is the co-founder and CEO of Arini, a San Francisco startup building an AI receptionist that answers phones, books appointments, and handles patient communication for dental practices around the clock. A Harvard computer science graduate and former search and applied-AI engineer at the enterprise messaging company Threads, he teamed up with his high-school friend Rami Rustom - the pair met in Jordan - to attack a market they found by literally walking into dental offices and watching front desks melt down. Backed by Y Combinator (W24), Arini turns the $7B-a-year dental front-desk problem into software that, in Jamjoom's words, just gets the job done.
Meta Platforms is the company behind Facebook, Instagram, WhatsApp, Messenger, and Threads - a Family of Apps used by more than 3 billion people daily. Founded as Facebook in 2004 and renamed Meta in 2021, it runs one of the world's largest digital advertising businesses while pouring tens of billions into artificial intelligence (the open-weight Llama models and Meta AI assistant) and wearable computing (Quest headsets and Ray-Ban Meta smart glasses). In 2025 it reported roughly $201 billion in revenue.