Handshake was working on that until they realized they could be an AI company and compete with Scale instead.
They were building like a social network/college job fair platform kind of thing, but then in the last year or so they launched an AI labeling platform[1] and the revenue from that has blown up and I think eclipsed their original business by quite a bit.
According to a podcast[2] discussing the Scale acquisition by Meta, they apparently closed $50M in AI labeling deals in the couple days after the Scale acquisition was announced.